[PATCH 10/79] affs: switch to new ctime accessors

[PATCH 10/79] affs: switch to new ctime accessors

[Jeff Layton]

In later patches, we're going to change how the ctime.tv_nsec field is
utilized. Switch to using accessor functions instead of raw accesses of
inode->i_ctime.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/affs/amigaffs.c |  6 +++---
 fs/affs/inode.c    | 17 +++++++++--------
 2 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c
index 29f11e10a7c7..2b508aa6707e 100644
--- a/fs/affs/amigaffs.c
+++ b/fs/affs/amigaffs.c
@@ -60,7 +60,7 @@ affs_insert_hash(struct inode *dir, struct buffer_head *bh)
 	mark_buffer_dirty_inode(dir_bh, dir);
 	affs_brelse(dir_bh);
 
-	dir->i_mtime = dir->i_ctime = current_time(dir);
+	dir->i_mtime = inode_ctime_set_current(dir);
 	inode_inc_iversion(dir);
 	mark_inode_dirty(dir);
 
@@ -114,7 +114,7 @@ affs_remove_hash(struct inode *dir, struct buffer_head *rem_bh)
 
 	affs_brelse(bh);
 
-	dir->i_mtime = dir->i_ctime = current_time(dir);
+	dir->i_mtime = inode_ctime_set_current(dir);
 	inode_inc_iversion(dir);
 	mark_inode_dirty(dir);
 
@@ -315,7 +315,7 @@ affs_remove_header(struct dentry *dentry)
 	else
 		clear_nlink(inode);
 	affs_unlock_link(inode);
-	inode->i_ctime = current_time(inode);
+	inode_ctime_set_current(inode);
 	mark_inode_dirty(inode);
 
 done:
diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index 27f77a52c5c8..177bac4def5e 100644
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -19,6 +19,7 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino)
 {
 	struct affs_sb_info	*sbi = AFFS_SB(sb);
 	struct buffer_head	*bh;
+	struct timespec64	ctime;
 	struct affs_tail	*tail;
 	struct inode		*inode;
 	u32			 block;
@@ -149,13 +150,13 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino)
 		break;
 	}
 
-	inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec
-		       = (be32_to_cpu(tail->change.days) * 86400LL +
-		         be32_to_cpu(tail->change.mins) * 60 +
-			 be32_to_cpu(tail->change.ticks) / 50 +
-			 AFFS_EPOCH_DELTA) +
-			 sys_tz.tz_minuteswest * 60;
-	inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec = inode->i_atime.tv_nsec = 0;
+	ctime.tv_sec = (be32_to_cpu(tail->change.days) * 86400LL +
+		        be32_to_cpu(tail->change.mins) * 60 +
+			be32_to_cpu(tail->change.ticks) / 50 +
+			AFFS_EPOCH_DELTA) +
+			sys_tz.tz_minuteswest * 60;
+	ctime.tv_nsec = 0;
+	inode->i_atime = inode->i_mtime = inode_ctime_set(inode, ctime);
 	affs_brelse(bh);
 	unlock_new_inode(inode);
 	return inode;
@@ -314,7 +315,7 @@ affs_new_inode(struct inode *dir)
 	inode->i_gid     = current_fsgid();
 	inode->i_ino     = block;
 	set_nlink(inode, 1);
-	inode->i_mtime   = inode->i_atime = inode->i_ctime = current_time(inode);
+	inode->i_mtime   = inode->i_atime = inode_ctime_set_current(inode);
 	atomic_set(&AFFS_I(inode)->i_opencnt, 0);
 	AFFS_I(inode)->i_blkcnt = 0;
 	AFFS_I(inode)->i_lc = NULL;
-- 
2.41.0

Re: [PATCH 10/79] affs: switch to new ctime accessors

[Jan Kara]

On Wed 21-06-23 10:45:23, Jeff Layton wrote:
> In later patches, we're going to change how the ctime.tv_nsec field is
> utilized. Switch to using accessor functions instead of raw accesses of
> inode->i_ctime.
> 
> Signed-off-by: Jeff Layton <jlayton@kernel.org>

Looks good to me. Feel free to add:

Reviewed-by: Jan Kara <jack@suse.cz>

								Honza

> ---
>  fs/affs/amigaffs.c |  6 +++---
>  fs/affs/inode.c    | 17 +++++++++--------
>  2 files changed, 12 insertions(+), 11 deletions(-)
> 
> diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c
> index 29f11e10a7c7..2b508aa6707e 100644
> --- a/fs/affs/amigaffs.c
> +++ b/fs/affs/amigaffs.c
> @@ -60,7 +60,7 @@ affs_insert_hash(struct inode *dir, struct buffer_head *bh)
>  	mark_buffer_dirty_inode(dir_bh, dir);
>  	affs_brelse(dir_bh);
>  
> -	dir->i_mtime = dir->i_ctime = current_time(dir);
> +	dir->i_mtime = inode_ctime_set_current(dir);
>  	inode_inc_iversion(dir);
>  	mark_inode_dirty(dir);
>  
> @@ -114,7 +114,7 @@ affs_remove_hash(struct inode *dir, struct buffer_head *rem_bh)
>  
>  	affs_brelse(bh);
>  
> -	dir->i_mtime = dir->i_ctime = current_time(dir);
> +	dir->i_mtime = inode_ctime_set_current(dir);
>  	inode_inc_iversion(dir);
>  	mark_inode_dirty(dir);
>  
> @@ -315,7 +315,7 @@ affs_remove_header(struct dentry *dentry)
>  	else
>  		clear_nlink(inode);
>  	affs_unlock_link(inode);
> -	inode->i_ctime = current_time(inode);
> +	inode_ctime_set_current(inode);
>  	mark_inode_dirty(inode);
>  
>  done:
> diff --git a/fs/affs/inode.c b/fs/affs/inode.c
> index 27f77a52c5c8..177bac4def5e 100644
> --- a/fs/affs/inode.c
> +++ b/fs/affs/inode.c
> @@ -19,6 +19,7 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino)
>  {
>  	struct affs_sb_info	*sbi = AFFS_SB(sb);
>  	struct buffer_head	*bh;
> +	struct timespec64	ctime;
>  	struct affs_tail	*tail;
>  	struct inode		*inode;
>  	u32			 block;
> @@ -149,13 +150,13 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino)
>  		break;
>  	}
>  
> -	inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec
> -		       = (be32_to_cpu(tail->change.days) * 86400LL +
> -		         be32_to_cpu(tail->change.mins) * 60 +
> -			 be32_to_cpu(tail->change.ticks) / 50 +
> -			 AFFS_EPOCH_DELTA) +
> -			 sys_tz.tz_minuteswest * 60;
> -	inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec = inode->i_atime.tv_nsec = 0;
> +	ctime.tv_sec = (be32_to_cpu(tail->change.days) * 86400LL +
> +		        be32_to_cpu(tail->change.mins) * 60 +
> +			be32_to_cpu(tail->change.ticks) / 50 +
> +			AFFS_EPOCH_DELTA) +
> +			sys_tz.tz_minuteswest * 60;
> +	ctime.tv_nsec = 0;
> +	inode->i_atime = inode->i_mtime = inode_ctime_set(inode, ctime);
>  	affs_brelse(bh);
>  	unlock_new_inode(inode);
>  	return inode;
> @@ -314,7 +315,7 @@ affs_new_inode(struct inode *dir)
>  	inode->i_gid     = current_fsgid();
>  	inode->i_ino     = block;
>  	set_nlink(inode, 1);
> -	inode->i_mtime   = inode->i_atime = inode->i_ctime = current_time(inode);
> +	inode->i_mtime   = inode->i_atime = inode_ctime_set_current(inode);
>  	atomic_set(&AFFS_I(inode)->i_opencnt, 0);
>  	AFFS_I(inode)->i_blkcnt = 0;
>  	AFFS_I(inode)->i_lc = NULL;
> -- 
> 2.41.0
> 
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR

Re: [PATCH 10/79] affs: switch to new ctime accessors

[David Sterba]

On Wed, Jun 21, 2023 at 10:45:23AM -0400, Jeff Layton wrote:
> In later patches, we're going to change how the ctime.tv_nsec field is
> utilized. Switch to using accessor functions instead of raw accesses of
> inode->i_ctime.
> 
> Signed-off-by: Jeff Layton <jlayton@kernel.org>

Acked-by: David Sterba <dsterba@suse.com>

[PATCH 12/79] fs: switch to new ctime accessors

[Jeff Layton]

In later patches, we're going to change how the ctime.tv_nsec field is
utilized. Switch to using accessor functions instead of raw accesses of
inode->i_ctime.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/attr.c                |  2 +-
 fs/bad_inode.c           |  3 +--
 fs/binfmt_misc.c         |  3 +--
 fs/inode.c               | 12 ++++++++----
 fs/libfs.c               | 32 +++++++++++++++++---------------
 fs/nsfs.c                |  2 +-
 fs/pipe.c                |  2 +-
 fs/posix_acl.c           |  2 +-
 fs/stack.c               |  2 +-
 fs/stat.c                |  2 +-
 include/linux/fs_stack.h |  2 +-
 11 files changed, 34 insertions(+), 30 deletions(-)

diff --git a/fs/attr.c b/fs/attr.c
index d60dc1edb526..2750e5f98dfb 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -312,7 +312,7 @@ void setattr_copy(struct mnt_idmap *idmap, struct inode *inode,
 	if (ia_valid & ATTR_MTIME)
 		inode->i_mtime = attr->ia_mtime;
 	if (ia_valid & ATTR_CTIME)
-		inode->i_ctime = attr->ia_ctime;
+		inode_ctime_set(inode, attr->ia_ctime);
 	if (ia_valid & ATTR_MODE) {
 		umode_t mode = attr->ia_mode;
 		if (!in_group_or_capable(idmap, inode,
diff --git a/fs/bad_inode.c b/fs/bad_inode.c
index db649487d58c..bd3762e1b670 100644
--- a/fs/bad_inode.c
+++ b/fs/bad_inode.c
@@ -209,8 +209,7 @@ void make_bad_inode(struct inode *inode)
 	remove_inode_hash(inode);
 
 	inode->i_mode = S_IFREG;
-	inode->i_atime = inode->i_mtime = inode->i_ctime =
-		current_time(inode);
+	inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
 	inode->i_op = &bad_inode_ops;	
 	inode->i_opflags &= ~IOP_XATTR;
 	inode->i_fop = &bad_file_ops;	
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index bb202ad369d5..6af92eb1b871 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -547,8 +547,7 @@ static struct inode *bm_get_inode(struct super_block *sb, int mode)
 	if (inode) {
 		inode->i_ino = get_next_ino();
 		inode->i_mode = mode;
-		inode->i_atime = inode->i_mtime = inode->i_ctime =
-			current_time(inode);
+		inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
 	}
 	return inode;
 }
diff --git a/fs/inode.c b/fs/inode.c
index c005e7328fbb..a7f484e9e7c1 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1851,6 +1851,7 @@ EXPORT_SYMBOL(bmap);
 static int relatime_need_update(struct vfsmount *mnt, struct inode *inode,
 			     struct timespec64 now)
 {
+	struct timespec64 ctime;
 
 	if (!(mnt->mnt_flags & MNT_RELATIME))
 		return 1;
@@ -1862,7 +1863,8 @@ static int relatime_need_update(struct vfsmount *mnt, struct inode *inode,
 	/*
 	 * Is ctime younger than or equal to atime? If yes, update atime:
 	 */
-	if (timespec64_compare(&inode->i_ctime, &inode->i_atime) >= 0)
+	ctime = inode_ctime_peek(inode);
+	if (timespec64_compare(&ctime, &inode->i_atime) >= 0)
 		return 1;
 
 	/*
@@ -1885,7 +1887,7 @@ int generic_update_time(struct inode *inode, struct timespec64 *time, int flags)
 		if (flags & S_ATIME)
 			inode->i_atime = *time;
 		if (flags & S_CTIME)
-			inode->i_ctime = *time;
+			inode_ctime_set(inode, *time);
 		if (flags & S_MTIME)
 			inode->i_mtime = *time;
 
@@ -2071,6 +2073,7 @@ EXPORT_SYMBOL(file_remove_privs);
 static int inode_needs_update_time(struct inode *inode, struct timespec64 *now)
 {
 	int sync_it = 0;
+	struct timespec64 ctime;
 
 	/* First try to exhaust all avenues to not sync */
 	if (IS_NOCMTIME(inode))
@@ -2079,7 +2082,8 @@ static int inode_needs_update_time(struct inode *inode, struct timespec64 *now)
 	if (!timespec64_equal(&inode->i_mtime, now))
 		sync_it = S_MTIME;
 
-	if (!timespec64_equal(&inode->i_ctime, now))
+	ctime = inode_ctime_peek(inode);
+	if (!timespec64_equal(&ctime, now))
 		sync_it |= S_CTIME;
 
 	if (IS_I_VERSION(inode) && inode_iversion_need_inc(inode))
@@ -2510,7 +2514,7 @@ struct timespec64 inode_ctime_set_current(struct inode *inode)
 {
 	struct timespec64 now = current_time(inode);
 
-	inode_set_ctime(inode, now);
+	inode_ctime_set(inode, now);
 	return now;
 }
 EXPORT_SYMBOL(inode_ctime_set_current);
diff --git a/fs/libfs.c b/fs/libfs.c
index 5b851315eeed..4a914f09fa87 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -275,7 +275,7 @@ void simple_recursive_removal(struct dentry *dentry,
 		while ((child = find_next_child(this, victim)) == NULL) {
 			// kill and ascend
 			// update metadata while it's still locked
-			inode->i_ctime = current_time(inode);
+			inode_ctime_set_current(inode);
 			clear_nlink(inode);
 			inode_unlock(inode);
 			victim = this;
@@ -293,8 +293,7 @@ void simple_recursive_removal(struct dentry *dentry,
 				dput(victim);		// unpin it
 			}
 			if (victim == dentry) {
-				inode->i_ctime = inode->i_mtime =
-					current_time(inode);
+				inode->i_mtime = inode_ctime_set_current(inode);
 				if (d_is_dir(dentry))
 					drop_nlink(inode);
 				inode_unlock(inode);
@@ -335,7 +334,7 @@ static int pseudo_fs_fill_super(struct super_block *s, struct fs_context *fc)
 	 */
 	root->i_ino = 1;
 	root->i_mode = S_IFDIR | S_IRUSR | S_IWUSR;
-	root->i_atime = root->i_mtime = root->i_ctime = current_time(root);
+	root->i_atime = root->i_mtime = inode_ctime_set_current(root);
 	s->s_root = d_make_root(root);
 	if (!s->s_root)
 		return -ENOMEM;
@@ -391,7 +390,8 @@ int simple_link(struct dentry *old_dentry, struct inode *dir, struct dentry *den
 {
 	struct inode *inode = d_inode(old_dentry);
 
-	inode->i_ctime = dir->i_ctime = dir->i_mtime = current_time(inode);
+	inode_ctime_set_current(inode);
+	inode->i_mtime = inode_ctime_set_current(dir);
 	inc_nlink(inode);
 	ihold(inode);
 	dget(dentry);
@@ -425,7 +425,8 @@ int simple_unlink(struct inode *dir, struct dentry *dentry)
 {
 	struct inode *inode = d_inode(dentry);
 
-	inode->i_ctime = dir->i_ctime = dir->i_mtime = current_time(inode);
+	inode_ctime_set_current(inode);
+	dir->i_mtime = inode_ctime_set_current(dir);
 	drop_nlink(inode);
 	dput(dentry);
 	return 0;
@@ -459,10 +460,10 @@ int simple_rename_exchange(struct inode *old_dir, struct dentry *old_dentry,
 			inc_nlink(old_dir);
 		}
 	}
-	old_dir->i_ctime = old_dir->i_mtime =
-	new_dir->i_ctime = new_dir->i_mtime =
-	d_inode(old_dentry)->i_ctime =
-	d_inode(new_dentry)->i_ctime = current_time(old_dir);
+	old_dir->i_mtime = inode_ctime_set_current(old_dir);
+	new_dir->i_mtime = inode_ctime_set_current(new_dir);
+	inode_ctime_set_current(d_inode(old_dentry));
+	inode_ctime_set_current(d_inode(new_dentry));
 
 	return 0;
 }
@@ -495,8 +496,9 @@ int simple_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		inc_nlink(new_dir);
 	}
 
-	old_dir->i_ctime = old_dir->i_mtime = new_dir->i_ctime =
-		new_dir->i_mtime = inode->i_ctime = current_time(old_dir);
+	old_dir->i_mtime = inode_ctime_set_current(old_dir);
+	new_dir->i_mtime = inode_ctime_set_current(new_dir);
+	inode_ctime_set_current(inode);
 
 	return 0;
 }
@@ -659,7 +661,7 @@ int simple_fill_super(struct super_block *s, unsigned long magic,
 	 */
 	inode->i_ino = 1;
 	inode->i_mode = S_IFDIR | 0755;
-	inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
+	inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
 	inode->i_op = &simple_dir_inode_operations;
 	inode->i_fop = &simple_dir_operations;
 	set_nlink(inode, 2);
@@ -685,7 +687,7 @@ int simple_fill_super(struct super_block *s, unsigned long magic,
 			goto out;
 		}
 		inode->i_mode = S_IFREG | files->mode;
-		inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
+		inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
 		inode->i_fop = files->ops;
 		inode->i_ino = i;
 		d_add(dentry, inode);
@@ -1253,7 +1255,7 @@ struct inode *alloc_anon_inode(struct super_block *s)
 	inode->i_uid = current_fsuid();
 	inode->i_gid = current_fsgid();
 	inode->i_flags |= S_PRIVATE;
-	inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
+	inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
 	return inode;
 }
 EXPORT_SYMBOL(alloc_anon_inode);
diff --git a/fs/nsfs.c b/fs/nsfs.c
index f602a96a1afe..c052cc55eacd 100644
--- a/fs/nsfs.c
+++ b/fs/nsfs.c
@@ -84,7 +84,7 @@ static int __ns_get_path(struct path *path, struct ns_common *ns)
 		return -ENOMEM;
 	}
 	inode->i_ino = ns->inum;
-	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+	inode->i_mtime = inode->i_atime = inode_ctime_set_current(inode);
 	inode->i_flags |= S_IMMUTABLE;
 	inode->i_mode = S_IFREG | S_IRUGO;
 	inode->i_fop = &ns_file_operations;
diff --git a/fs/pipe.c b/fs/pipe.c
index 2d88f73f585a..bb90b6fc4a96 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -899,7 +899,7 @@ static struct inode * get_pipe_inode(void)
 	inode->i_mode = S_IFIFO | S_IRUSR | S_IWUSR;
 	inode->i_uid = current_fsuid();
 	inode->i_gid = current_fsgid();
-	inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
+	inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
 
 	return inode;
 
diff --git a/fs/posix_acl.c b/fs/posix_acl.c
index 7fa1b738bbab..cc9c390fd2af 100644
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c
@@ -1027,7 +1027,7 @@ int simple_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
 			return error;
 	}
 
-	inode->i_ctime = current_time(inode);
+	inode_ctime_set_current(inode);
 	if (IS_I_VERSION(inode))
 		inode_inc_iversion(inode);
 	set_cached_acl(inode, type, acl);
diff --git a/fs/stack.c b/fs/stack.c
index c9830924eb12..efd0de85bace 100644
--- a/fs/stack.c
+++ b/fs/stack.c
@@ -68,7 +68,7 @@ void fsstack_copy_attr_all(struct inode *dest, const struct inode *src)
 	dest->i_rdev = src->i_rdev;
 	dest->i_atime = src->i_atime;
 	dest->i_mtime = src->i_mtime;
-	dest->i_ctime = src->i_ctime;
+	inode_ctime_set(dest, inode_ctime_peek(src));
 	dest->i_blkbits = src->i_blkbits;
 	dest->i_flags = src->i_flags;
 	set_nlink(dest, src->i_nlink);
diff --git a/fs/stat.c b/fs/stat.c
index 7c238da22ef0..5d87e34d6dd5 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -58,7 +58,7 @@ void generic_fillattr(struct mnt_idmap *idmap, struct inode *inode,
 	stat->size = i_size_read(inode);
 	stat->atime = inode->i_atime;
 	stat->mtime = inode->i_mtime;
-	stat->ctime = inode->i_ctime;
+	stat->ctime = inode_ctime_peek(inode);
 	stat->blksize = i_blocksize(inode);
 	stat->blocks = inode->i_blocks;
 }
diff --git a/include/linux/fs_stack.h b/include/linux/fs_stack.h
index 54210a42c30d..1488a118fe91 100644
--- a/include/linux/fs_stack.h
+++ b/include/linux/fs_stack.h
@@ -24,7 +24,7 @@ static inline void fsstack_copy_attr_times(struct inode *dest,
 {
 	dest->i_atime = src->i_atime;
 	dest->i_mtime = src->i_mtime;
-	dest->i_ctime = src->i_ctime;
+	inode_ctime_set(dest, inode_ctime_peek(src));
 }
 
 #endif /* _LINUX_FS_STACK_H */
-- 
2.41.0

Re: [PATCH 12/79] fs: switch to new ctime accessors

[Jan Kara]

On Wed 21-06-23 10:45:25, Jeff Layton wrote:
> In later patches, we're going to change how the ctime.tv_nsec field is
> utilized. Switch to using accessor functions instead of raw accesses of
> inode->i_ctime.
> 
> Signed-off-by: Jeff Layton <jlayton@kernel.org>

Looks good to me. Feel free to add:

Reviewed-by: Jan Kara <jack@suse.cz>

								Honza

> ---
>  fs/attr.c                |  2 +-
>  fs/bad_inode.c           |  3 +--
>  fs/binfmt_misc.c         |  3 +--
>  fs/inode.c               | 12 ++++++++----
>  fs/libfs.c               | 32 +++++++++++++++++---------------
>  fs/nsfs.c                |  2 +-
>  fs/pipe.c                |  2 +-
>  fs/posix_acl.c           |  2 +-
>  fs/stack.c               |  2 +-
>  fs/stat.c                |  2 +-
>  include/linux/fs_stack.h |  2 +-
>  11 files changed, 34 insertions(+), 30 deletions(-)
> 
> diff --git a/fs/attr.c b/fs/attr.c
> index d60dc1edb526..2750e5f98dfb 100644
> --- a/fs/attr.c
> +++ b/fs/attr.c
> @@ -312,7 +312,7 @@ void setattr_copy(struct mnt_idmap *idmap, struct inode *inode,
>  	if (ia_valid & ATTR_MTIME)
>  		inode->i_mtime = attr->ia_mtime;
>  	if (ia_valid & ATTR_CTIME)
> -		inode->i_ctime = attr->ia_ctime;
> +		inode_ctime_set(inode, attr->ia_ctime);
>  	if (ia_valid & ATTR_MODE) {
>  		umode_t mode = attr->ia_mode;
>  		if (!in_group_or_capable(idmap, inode,
> diff --git a/fs/bad_inode.c b/fs/bad_inode.c
> index db649487d58c..bd3762e1b670 100644
> --- a/fs/bad_inode.c
> +++ b/fs/bad_inode.c
> @@ -209,8 +209,7 @@ void make_bad_inode(struct inode *inode)
>  	remove_inode_hash(inode);
>  
>  	inode->i_mode = S_IFREG;
> -	inode->i_atime = inode->i_mtime = inode->i_ctime =
> -		current_time(inode);
> +	inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
>  	inode->i_op = &bad_inode_ops;	
>  	inode->i_opflags &= ~IOP_XATTR;
>  	inode->i_fop = &bad_file_ops;	
> diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
> index bb202ad369d5..6af92eb1b871 100644
> --- a/fs/binfmt_misc.c
> +++ b/fs/binfmt_misc.c
> @@ -547,8 +547,7 @@ static struct inode *bm_get_inode(struct super_block *sb, int mode)
>  	if (inode) {
>  		inode->i_ino = get_next_ino();
>  		inode->i_mode = mode;
> -		inode->i_atime = inode->i_mtime = inode->i_ctime =
> -			current_time(inode);
> +		inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
>  	}
>  	return inode;
>  }
> diff --git a/fs/inode.c b/fs/inode.c
> index c005e7328fbb..a7f484e9e7c1 100644
> --- a/fs/inode.c
> +++ b/fs/inode.c
> @@ -1851,6 +1851,7 @@ EXPORT_SYMBOL(bmap);
>  static int relatime_need_update(struct vfsmount *mnt, struct inode *inode,
>  			     struct timespec64 now)
>  {
> +	struct timespec64 ctime;
>  
>  	if (!(mnt->mnt_flags & MNT_RELATIME))
>  		return 1;
> @@ -1862,7 +1863,8 @@ static int relatime_need_update(struct vfsmount *mnt, struct inode *inode,
>  	/*
>  	 * Is ctime younger than or equal to atime? If yes, update atime:
>  	 */
> -	if (timespec64_compare(&inode->i_ctime, &inode->i_atime) >= 0)
> +	ctime = inode_ctime_peek(inode);
> +	if (timespec64_compare(&ctime, &inode->i_atime) >= 0)
>  		return 1;
>  
>  	/*
> @@ -1885,7 +1887,7 @@ int generic_update_time(struct inode *inode, struct timespec64 *time, int flags)
>  		if (flags & S_ATIME)
>  			inode->i_atime = *time;
>  		if (flags & S_CTIME)
> -			inode->i_ctime = *time;
> +			inode_ctime_set(inode, *time);
>  		if (flags & S_MTIME)
>  			inode->i_mtime = *time;
>  
> @@ -2071,6 +2073,7 @@ EXPORT_SYMBOL(file_remove_privs);
>  static int inode_needs_update_time(struct inode *inode, struct timespec64 *now)
>  {
>  	int sync_it = 0;
> +	struct timespec64 ctime;
>  
>  	/* First try to exhaust all avenues to not sync */
>  	if (IS_NOCMTIME(inode))
> @@ -2079,7 +2082,8 @@ static int inode_needs_update_time(struct inode *inode, struct timespec64 *now)
>  	if (!timespec64_equal(&inode->i_mtime, now))
>  		sync_it = S_MTIME;
>  
> -	if (!timespec64_equal(&inode->i_ctime, now))
> +	ctime = inode_ctime_peek(inode);
> +	if (!timespec64_equal(&ctime, now))
>  		sync_it |= S_CTIME;
>  
>  	if (IS_I_VERSION(inode) && inode_iversion_need_inc(inode))
> @@ -2510,7 +2514,7 @@ struct timespec64 inode_ctime_set_current(struct inode *inode)
>  {
>  	struct timespec64 now = current_time(inode);
>  
> -	inode_set_ctime(inode, now);
> +	inode_ctime_set(inode, now);
>  	return now;
>  }
>  EXPORT_SYMBOL(inode_ctime_set_current);
> diff --git a/fs/libfs.c b/fs/libfs.c
> index 5b851315eeed..4a914f09fa87 100644
> --- a/fs/libfs.c
> +++ b/fs/libfs.c
> @@ -275,7 +275,7 @@ void simple_recursive_removal(struct dentry *dentry,
>  		while ((child = find_next_child(this, victim)) == NULL) {
>  			// kill and ascend
>  			// update metadata while it's still locked
> -			inode->i_ctime = current_time(inode);
> +			inode_ctime_set_current(inode);
>  			clear_nlink(inode);
>  			inode_unlock(inode);
>  			victim = this;
> @@ -293,8 +293,7 @@ void simple_recursive_removal(struct dentry *dentry,
>  				dput(victim);		// unpin it
>  			}
>  			if (victim == dentry) {
> -				inode->i_ctime = inode->i_mtime =
> -					current_time(inode);
> +				inode->i_mtime = inode_ctime_set_current(inode);
>  				if (d_is_dir(dentry))
>  					drop_nlink(inode);
>  				inode_unlock(inode);
> @@ -335,7 +334,7 @@ static int pseudo_fs_fill_super(struct super_block *s, struct fs_context *fc)
>  	 */
>  	root->i_ino = 1;
>  	root->i_mode = S_IFDIR | S_IRUSR | S_IWUSR;
> -	root->i_atime = root->i_mtime = root->i_ctime = current_time(root);
> +	root->i_atime = root->i_mtime = inode_ctime_set_current(root);
>  	s->s_root = d_make_root(root);
>  	if (!s->s_root)
>  		return -ENOMEM;
> @@ -391,7 +390,8 @@ int simple_link(struct dentry *old_dentry, struct inode *dir, struct dentry *den
>  {
>  	struct inode *inode = d_inode(old_dentry);
>  
> -	inode->i_ctime = dir->i_ctime = dir->i_mtime = current_time(inode);
> +	inode_ctime_set_current(inode);
> +	inode->i_mtime = inode_ctime_set_current(dir);
>  	inc_nlink(inode);
>  	ihold(inode);
>  	dget(dentry);
> @@ -425,7 +425,8 @@ int simple_unlink(struct inode *dir, struct dentry *dentry)
>  {
>  	struct inode *inode = d_inode(dentry);
>  
> -	inode->i_ctime = dir->i_ctime = dir->i_mtime = current_time(inode);
> +	inode_ctime_set_current(inode);
> +	dir->i_mtime = inode_ctime_set_current(dir);
>  	drop_nlink(inode);
>  	dput(dentry);
>  	return 0;
> @@ -459,10 +460,10 @@ int simple_rename_exchange(struct inode *old_dir, struct dentry *old_dentry,
>  			inc_nlink(old_dir);
>  		}
>  	}
> -	old_dir->i_ctime = old_dir->i_mtime =
> -	new_dir->i_ctime = new_dir->i_mtime =
> -	d_inode(old_dentry)->i_ctime =
> -	d_inode(new_dentry)->i_ctime = current_time(old_dir);
> +	old_dir->i_mtime = inode_ctime_set_current(old_dir);
> +	new_dir->i_mtime = inode_ctime_set_current(new_dir);
> +	inode_ctime_set_current(d_inode(old_dentry));
> +	inode_ctime_set_current(d_inode(new_dentry));
>  
>  	return 0;
>  }
> @@ -495,8 +496,9 @@ int simple_rename(struct mnt_idmap *idmap, struct inode *old_dir,
>  		inc_nlink(new_dir);
>  	}
>  
> -	old_dir->i_ctime = old_dir->i_mtime = new_dir->i_ctime =
> -		new_dir->i_mtime = inode->i_ctime = current_time(old_dir);
> +	old_dir->i_mtime = inode_ctime_set_current(old_dir);
> +	new_dir->i_mtime = inode_ctime_set_current(new_dir);
> +	inode_ctime_set_current(inode);
>  
>  	return 0;
>  }
> @@ -659,7 +661,7 @@ int simple_fill_super(struct super_block *s, unsigned long magic,
>  	 */
>  	inode->i_ino = 1;
>  	inode->i_mode = S_IFDIR | 0755;
> -	inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
> +	inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
>  	inode->i_op = &simple_dir_inode_operations;
>  	inode->i_fop = &simple_dir_operations;
>  	set_nlink(inode, 2);
> @@ -685,7 +687,7 @@ int simple_fill_super(struct super_block *s, unsigned long magic,
>  			goto out;
>  		}
>  		inode->i_mode = S_IFREG | files->mode;
> -		inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
> +		inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
>  		inode->i_fop = files->ops;
>  		inode->i_ino = i;
>  		d_add(dentry, inode);
> @@ -1253,7 +1255,7 @@ struct inode *alloc_anon_inode(struct super_block *s)
>  	inode->i_uid = current_fsuid();
>  	inode->i_gid = current_fsgid();
>  	inode->i_flags |= S_PRIVATE;
> -	inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
> +	inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
>  	return inode;
>  }
>  EXPORT_SYMBOL(alloc_anon_inode);
> diff --git a/fs/nsfs.c b/fs/nsfs.c
> index f602a96a1afe..c052cc55eacd 100644
> --- a/fs/nsfs.c
> +++ b/fs/nsfs.c
> @@ -84,7 +84,7 @@ static int __ns_get_path(struct path *path, struct ns_common *ns)
>  		return -ENOMEM;
>  	}
>  	inode->i_ino = ns->inum;
> -	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
> +	inode->i_mtime = inode->i_atime = inode_ctime_set_current(inode);
>  	inode->i_flags |= S_IMMUTABLE;
>  	inode->i_mode = S_IFREG | S_IRUGO;
>  	inode->i_fop = &ns_file_operations;
> diff --git a/fs/pipe.c b/fs/pipe.c
> index 2d88f73f585a..bb90b6fc4a96 100644
> --- a/fs/pipe.c
> +++ b/fs/pipe.c
> @@ -899,7 +899,7 @@ static struct inode * get_pipe_inode(void)
>  	inode->i_mode = S_IFIFO | S_IRUSR | S_IWUSR;
>  	inode->i_uid = current_fsuid();
>  	inode->i_gid = current_fsgid();
> -	inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
> +	inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
>  
>  	return inode;
>  
> diff --git a/fs/posix_acl.c b/fs/posix_acl.c
> index 7fa1b738bbab..cc9c390fd2af 100644
> --- a/fs/posix_acl.c
> +++ b/fs/posix_acl.c
> @@ -1027,7 +1027,7 @@ int simple_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
>  			return error;
>  	}
>  
> -	inode->i_ctime = current_time(inode);
> +	inode_ctime_set_current(inode);
>  	if (IS_I_VERSION(inode))
>  		inode_inc_iversion(inode);
>  	set_cached_acl(inode, type, acl);
> diff --git a/fs/stack.c b/fs/stack.c
> index c9830924eb12..efd0de85bace 100644
> --- a/fs/stack.c
> +++ b/fs/stack.c
> @@ -68,7 +68,7 @@ void fsstack_copy_attr_all(struct inode *dest, const struct inode *src)
>  	dest->i_rdev = src->i_rdev;
>  	dest->i_atime = src->i_atime;
>  	dest->i_mtime = src->i_mtime;
> -	dest->i_ctime = src->i_ctime;
> +	inode_ctime_set(dest, inode_ctime_peek(src));
>  	dest->i_blkbits = src->i_blkbits;
>  	dest->i_flags = src->i_flags;
>  	set_nlink(dest, src->i_nlink);
> diff --git a/fs/stat.c b/fs/stat.c
> index 7c238da22ef0..5d87e34d6dd5 100644
> --- a/fs/stat.c
> +++ b/fs/stat.c
> @@ -58,7 +58,7 @@ void generic_fillattr(struct mnt_idmap *idmap, struct inode *inode,
>  	stat->size = i_size_read(inode);
>  	stat->atime = inode->i_atime;
>  	stat->mtime = inode->i_mtime;
> -	stat->ctime = inode->i_ctime;
> +	stat->ctime = inode_ctime_peek(inode);
>  	stat->blksize = i_blocksize(inode);
>  	stat->blocks = inode->i_blocks;
>  }
> diff --git a/include/linux/fs_stack.h b/include/linux/fs_stack.h
> index 54210a42c30d..1488a118fe91 100644
> --- a/include/linux/fs_stack.h
> +++ b/include/linux/fs_stack.h
> @@ -24,7 +24,7 @@ static inline void fsstack_copy_attr_times(struct inode *dest,
>  {
>  	dest->i_atime = src->i_atime;
>  	dest->i_mtime = src->i_mtime;
> -	dest->i_ctime = src->i_ctime;
> +	inode_ctime_set(dest, inode_ctime_peek(src));
>  }
>  
>  #endif /* _LINUX_FS_STACK_H */
> -- 
> 2.41.0
> 
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR

[PATCH 27/79] exfat: switch to new ctime accessors

[Jeff Layton]

In later patches, we're going to change how the ctime.tv_nsec field is
utilized. Switch to using accessor functions instead of raw accesses of
inode->i_ctime.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/exfat/file.c  |  4 ++--
 fs/exfat/inode.c |  6 +++---
 fs/exfat/namei.c | 29 ++++++++++++++---------------
 fs/exfat/super.c |  4 ++--
 4 files changed, 21 insertions(+), 22 deletions(-)

diff --git a/fs/exfat/file.c b/fs/exfat/file.c
index 3cbd270e0cba..853ba8ec4095 100644
--- a/fs/exfat/file.c
+++ b/fs/exfat/file.c
@@ -22,7 +22,7 @@ static int exfat_cont_expand(struct inode *inode, loff_t size)
 	if (err)
 		return err;
 
-	inode->i_ctime = inode->i_mtime = current_time(inode);
+	inode->i_mtime = inode_ctime_set_current(inode);
 	mark_inode_dirty(inode);
 
 	if (!IS_SYNC(inode))
@@ -290,7 +290,7 @@ int exfat_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
 	}
 
 	if (attr->ia_valid & ATTR_SIZE)
-		inode->i_mtime = inode->i_ctime = current_time(inode);
+		inode->i_mtime = inode_ctime_set_current(inode);
 
 	setattr_copy(&nop_mnt_idmap, inode, attr);
 	exfat_truncate_atime(&inode->i_atime);
diff --git a/fs/exfat/inode.c b/fs/exfat/inode.c
index 481dd338f2b8..b06b40b7c7b4 100644
--- a/fs/exfat/inode.c
+++ b/fs/exfat/inode.c
@@ -355,7 +355,7 @@ static void exfat_write_failed(struct address_space *mapping, loff_t to)
 
 	if (to > i_size_read(inode)) {
 		truncate_pagecache(inode, i_size_read(inode));
-		inode->i_mtime = inode->i_ctime = current_time(inode);
+		inode->i_mtime = inode_ctime_set_current(inode);
 		exfat_truncate(inode);
 	}
 }
@@ -398,7 +398,7 @@ static int exfat_write_end(struct file *file, struct address_space *mapping,
 		exfat_write_failed(mapping, pos+len);
 
 	if (!(err < 0) && !(ei->attr & ATTR_ARCHIVE)) {
-		inode->i_mtime = inode->i_ctime = current_time(inode);
+		inode->i_mtime = inode_ctime_set_current(inode);
 		ei->attr |= ATTR_ARCHIVE;
 		mark_inode_dirty(inode);
 	}
@@ -577,7 +577,7 @@ static int exfat_fill_inode(struct inode *inode, struct exfat_dir_entry *info)
 
 	inode->i_blocks = round_up(i_size_read(inode), sbi->cluster_size) >> 9;
 	inode->i_mtime = info->mtime;
-	inode->i_ctime = info->mtime;
+	inode_ctime_set(inode, info->mtime);
 	ei->i_crtime = info->crtime;
 	inode->i_atime = info->atime;
 
diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c
index d9b46fa36bff..a8e6a84e6009 100644
--- a/fs/exfat/namei.c
+++ b/fs/exfat/namei.c
@@ -569,7 +569,7 @@ static int exfat_create(struct mnt_idmap *idmap, struct inode *dir,
 		goto unlock;
 
 	inode_inc_iversion(dir);
-	dir->i_ctime = dir->i_mtime = current_time(dir);
+	dir->i_mtime = inode_ctime_set_current(dir);
 	if (IS_DIRSYNC(dir))
 		exfat_sync_inode(dir);
 	else
@@ -582,8 +582,8 @@ static int exfat_create(struct mnt_idmap *idmap, struct inode *dir,
 		goto unlock;
 
 	inode_inc_iversion(inode);
-	inode->i_mtime = inode->i_atime = inode->i_ctime =
-		EXFAT_I(inode)->i_crtime = current_time(inode);
+	inode->i_mtime = inode->i_atime = EXFAT_I(inode)->i_crtime =
+		inode_ctime_set_current(inode);
 	exfat_truncate_atime(&inode->i_atime);
 	/* timestamp is already written, so mark_inode_dirty() is unneeded. */
 
@@ -817,7 +817,7 @@ static int exfat_unlink(struct inode *dir, struct dentry *dentry)
 	ei->dir.dir = DIR_DELETED;
 
 	inode_inc_iversion(dir);
-	dir->i_mtime = dir->i_atime = dir->i_ctime = current_time(dir);
+	dir->i_mtime = dir->i_atime = inode_ctime_set_current(dir);
 	exfat_truncate_atime(&dir->i_atime);
 	if (IS_DIRSYNC(dir))
 		exfat_sync_inode(dir);
@@ -825,7 +825,7 @@ static int exfat_unlink(struct inode *dir, struct dentry *dentry)
 		mark_inode_dirty(dir);
 
 	clear_nlink(inode);
-	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+	inode->i_mtime = inode->i_atime = inode_ctime_set_current(inode);
 	exfat_truncate_atime(&inode->i_atime);
 	exfat_unhash_inode(inode);
 	exfat_d_version_set(dentry, inode_query_iversion(dir));
@@ -852,7 +852,7 @@ static int exfat_mkdir(struct mnt_idmap *idmap, struct inode *dir,
 		goto unlock;
 
 	inode_inc_iversion(dir);
-	dir->i_ctime = dir->i_mtime = current_time(dir);
+	dir->i_mtime = inode_ctime_set_current(dir);
 	if (IS_DIRSYNC(dir))
 		exfat_sync_inode(dir);
 	else
@@ -866,8 +866,8 @@ static int exfat_mkdir(struct mnt_idmap *idmap, struct inode *dir,
 		goto unlock;
 
 	inode_inc_iversion(inode);
-	inode->i_mtime = inode->i_atime = inode->i_ctime =
-		EXFAT_I(inode)->i_crtime = current_time(inode);
+	inode->i_mtime = inode->i_atime = EXFAT_I(inode)->i_crtime =
+		inode_ctime_set_current(inode);
 	exfat_truncate_atime(&inode->i_atime);
 	/* timestamp is already written, so mark_inode_dirty() is unneeded. */
 
@@ -979,7 +979,7 @@ static int exfat_rmdir(struct inode *dir, struct dentry *dentry)
 	ei->dir.dir = DIR_DELETED;
 
 	inode_inc_iversion(dir);
-	dir->i_mtime = dir->i_atime = dir->i_ctime = current_time(dir);
+	dir->i_mtime = dir->i_atime = inode_ctime_set_current(dir);
 	exfat_truncate_atime(&dir->i_atime);
 	if (IS_DIRSYNC(dir))
 		exfat_sync_inode(dir);
@@ -988,7 +988,7 @@ static int exfat_rmdir(struct inode *dir, struct dentry *dentry)
 	drop_nlink(dir);
 
 	clear_nlink(inode);
-	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+	inode->i_mtime = inode->i_atime = inode_ctime_set_current(inode);
 	exfat_truncate_atime(&inode->i_atime);
 	exfat_unhash_inode(inode);
 	exfat_d_version_set(dentry, inode_query_iversion(dir));
@@ -1312,8 +1312,8 @@ static int exfat_rename(struct mnt_idmap *idmap,
 		goto unlock;
 
 	inode_inc_iversion(new_dir);
-	new_dir->i_ctime = new_dir->i_mtime = new_dir->i_atime =
-		EXFAT_I(new_dir)->i_crtime = current_time(new_dir);
+	new_dir->i_mtime = new_dir->i_atime = EXFAT_I(new_dir)->i_crtime =
+		inode_ctime_set_current(new_dir);
 	exfat_truncate_atime(&new_dir->i_atime);
 	if (IS_DIRSYNC(new_dir))
 		exfat_sync_inode(new_dir);
@@ -1336,7 +1336,7 @@ static int exfat_rename(struct mnt_idmap *idmap,
 	}
 
 	inode_inc_iversion(old_dir);
-	old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir);
+	old_dir->i_mtime = inode_ctime_set_current(old_dir);
 	if (IS_DIRSYNC(old_dir))
 		exfat_sync_inode(old_dir);
 	else
@@ -1354,8 +1354,7 @@ static int exfat_rename(struct mnt_idmap *idmap,
 			exfat_warn(sb, "abnormal access to an inode dropped");
 			WARN_ON(new_inode->i_nlink == 0);
 		}
-		new_inode->i_ctime = EXFAT_I(new_inode)->i_crtime =
-			current_time(new_inode);
+		EXFAT_I(new_inode)->i_crtime = inode_ctime_set_current(new_inode);
 	}
 
 unlock:
diff --git a/fs/exfat/super.c b/fs/exfat/super.c
index 8c32460e031e..f4f3ccedf1bc 100644
--- a/fs/exfat/super.c
+++ b/fs/exfat/super.c
@@ -379,8 +379,8 @@ static int exfat_read_root(struct inode *inode)
 	ei->i_size_ondisk = i_size_read(inode);
 
 	exfat_save_attr(inode, ATTR_SUBDIR);
-	inode->i_mtime = inode->i_atime = inode->i_ctime = ei->i_crtime =
-		current_time(inode);
+	inode->i_mtime = inode->i_atime = ei->i_crtime =
+		inode_ctime_set_current(inode);
 	exfat_truncate_atime(&inode->i_atime);
 	return 0;
 }
-- 
2.41.0

[PATCH 33/79] fuse: switch to new ctime accessors

[Jeff Layton]

In later patches, we're going to change how the ctime.tv_nsec field is
utilized. Switch to using accessor functions instead of raw accesses of
inode->i_ctime.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/fuse/control.c |  2 +-
 fs/fuse/dir.c     |  8 ++++----
 fs/fuse/inode.c   | 18 ++++++++++--------
 3 files changed, 15 insertions(+), 13 deletions(-)

diff --git a/fs/fuse/control.c b/fs/fuse/control.c
index 247ef4f76761..b5df89d0c95a 100644
--- a/fs/fuse/control.c
+++ b/fs/fuse/control.c
@@ -235,7 +235,7 @@ static struct dentry *fuse_ctl_add_dentry(struct dentry *parent,
 	inode->i_mode = mode;
 	inode->i_uid = fc->user_id;
 	inode->i_gid = fc->group_id;
-	inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
+	inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
 	/* setting ->i_op to NULL is not allowed */
 	if (iop)
 		inode->i_op = iop;
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 5a4a7155cf1c..03fbb83b7127 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -933,7 +933,7 @@ void fuse_flush_time_update(struct inode *inode)
 static void fuse_update_ctime_in_cache(struct inode *inode)
 {
 	if (!IS_NOCMTIME(inode)) {
-		inode->i_ctime = current_time(inode);
+		inode_ctime_set_current(inode);
 		mark_inode_dirty_sync(inode);
 		fuse_flush_time_update(inode);
 	}
@@ -1715,8 +1715,8 @@ int fuse_flush_times(struct inode *inode, struct fuse_file *ff)
 	inarg.mtimensec = inode->i_mtime.tv_nsec;
 	if (fm->fc->minor >= 23) {
 		inarg.valid |= FATTR_CTIME;
-		inarg.ctime = inode->i_ctime.tv_sec;
-		inarg.ctimensec = inode->i_ctime.tv_nsec;
+		inarg.ctime = inode_ctime_peek(inode).tv_sec;
+		inarg.ctimensec = inode_ctime_peek(inode).tv_nsec;
 	}
 	if (ff) {
 		inarg.valid |= FATTR_FH;
@@ -1857,7 +1857,7 @@ int fuse_do_setattr(struct dentry *dentry, struct iattr *attr,
 		if (attr->ia_valid & ATTR_MTIME)
 			inode->i_mtime = attr->ia_mtime;
 		if (attr->ia_valid & ATTR_CTIME)
-			inode->i_ctime = attr->ia_ctime;
+			inode_ctime_set(inode, attr->ia_ctime);
 		/* FIXME: clear I_DIRTY_SYNC? */
 	}
 
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 660be31aaabc..54e06d3874e7 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -194,8 +194,8 @@ void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr,
 		inode->i_mtime.tv_nsec  = attr->mtimensec;
 	}
 	if (!(cache_mask & STATX_CTIME)) {
-		inode->i_ctime.tv_sec   = attr->ctime;
-		inode->i_ctime.tv_nsec  = attr->ctimensec;
+		inode_ctime_set_sec(inode, attr->ctime);
+		inode_ctime_set_nsec(inode, attr->ctimensec);
 	}
 
 	if (attr->blksize != 0)
@@ -259,8 +259,8 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr,
 		attr->mtimensec = inode->i_mtime.tv_nsec;
 	}
 	if (cache_mask & STATX_CTIME) {
-		attr->ctime = inode->i_ctime.tv_sec;
-		attr->ctimensec = inode->i_ctime.tv_nsec;
+		attr->ctime = inode_ctime_peek(inode).tv_sec;
+		attr->ctimensec = inode_ctime_peek(inode).tv_nsec;
 	}
 
 	if ((attr_version != 0 && fi->attr_version > attr_version) ||
@@ -318,8 +318,8 @@ static void fuse_init_inode(struct inode *inode, struct fuse_attr *attr,
 	inode->i_size = attr->size;
 	inode->i_mtime.tv_sec  = attr->mtime;
 	inode->i_mtime.tv_nsec = attr->mtimensec;
-	inode->i_ctime.tv_sec  = attr->ctime;
-	inode->i_ctime.tv_nsec = attr->ctimensec;
+	inode_ctime_set_sec(inode, attr->ctime);
+	inode_ctime_set_nsec(inode, attr->ctimensec);
 	if (S_ISREG(inode->i_mode)) {
 		fuse_init_common(inode);
 		fuse_init_file_inode(inode, attr->flags);
@@ -1398,16 +1398,18 @@ EXPORT_SYMBOL_GPL(fuse_dev_free);
 static void fuse_fill_attr_from_inode(struct fuse_attr *attr,
 				      const struct fuse_inode *fi)
 {
+	struct timespec64 ctime = inode_ctime_peek(&fi->inode);
+
 	*attr = (struct fuse_attr){
 		.ino		= fi->inode.i_ino,
 		.size		= fi->inode.i_size,
 		.blocks		= fi->inode.i_blocks,
 		.atime		= fi->inode.i_atime.tv_sec,
 		.mtime		= fi->inode.i_mtime.tv_sec,
-		.ctime		= fi->inode.i_ctime.tv_sec,
+		.ctime		= ctime.tv_sec,
 		.atimensec	= fi->inode.i_atime.tv_nsec,
 		.mtimensec	= fi->inode.i_mtime.tv_nsec,
-		.ctimensec	= fi->inode.i_ctime.tv_nsec,
+		.ctimensec	= ctime.tv_nsec,
 		.mode		= fi->inode.i_mode,
 		.nlink		= fi->inode.i_nlink,
 		.uid		= fi->inode.i_uid.val,
-- 
2.41.0

[PATCH 35/79] hfs: switch to new ctime accessors

[Jeff Layton]

In later patches, we're going to change how the ctime.tv_nsec field is
utilized. Switch to using accessor functions instead of raw accesses of
inode->i_ctime.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/hfs/catalog.c |  8 ++++----
 fs/hfs/dir.c     |  2 +-
 fs/hfs/inode.c   | 13 ++++++-------
 fs/hfs/sysdep.c  |  2 +-
 4 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/fs/hfs/catalog.c b/fs/hfs/catalog.c
index d365bf0b8c77..6fd2ae856178 100644
--- a/fs/hfs/catalog.c
+++ b/fs/hfs/catalog.c
@@ -133,7 +133,7 @@ int hfs_cat_create(u32 cnid, struct inode *dir, const struct qstr *str, struct i
 		goto err1;
 
 	dir->i_size++;
-	dir->i_mtime = dir->i_ctime = current_time(dir);
+	dir->i_mtime = inode_ctime_set_current(dir);
 	mark_inode_dirty(dir);
 	hfs_find_exit(&fd);
 	return 0;
@@ -269,7 +269,7 @@ int hfs_cat_delete(u32 cnid, struct inode *dir, const struct qstr *str)
 	}
 
 	dir->i_size--;
-	dir->i_mtime = dir->i_ctime = current_time(dir);
+	dir->i_mtime = inode_ctime_set_current(dir);
 	mark_inode_dirty(dir);
 	res = 0;
 out:
@@ -337,7 +337,7 @@ int hfs_cat_move(u32 cnid, struct inode *src_dir, const struct qstr *src_name,
 	if (err)
 		goto out;
 	dst_dir->i_size++;
-	dst_dir->i_mtime = dst_dir->i_ctime = current_time(dst_dir);
+	dst_dir->i_mtime = inode_ctime_set_current(dst_dir);
 	mark_inode_dirty(dst_dir);
 
 	/* finally remove the old entry */
@@ -349,7 +349,7 @@ int hfs_cat_move(u32 cnid, struct inode *src_dir, const struct qstr *src_name,
 	if (err)
 		goto out;
 	src_dir->i_size--;
-	src_dir->i_mtime = src_dir->i_ctime = current_time(src_dir);
+	src_dir->i_mtime = inode_ctime_set_current(src_dir);
 	mark_inode_dirty(src_dir);
 
 	type = entry.type;
diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index 3e1e3dcf0b48..bb9e651c1008 100644
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c
@@ -263,7 +263,7 @@ static int hfs_remove(struct inode *dir, struct dentry *dentry)
 	if (res)
 		return res;
 	clear_nlink(inode);
-	inode->i_ctime = current_time(inode);
+	inode_ctime_set_current(inode);
 	hfs_delete_inode(inode);
 	mark_inode_dirty(inode);
 	return 0;
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index 441d7fc952e3..d8008d926a19 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -200,7 +200,7 @@ struct inode *hfs_new_inode(struct inode *dir, const struct qstr *name, umode_t
 	inode->i_uid = current_fsuid();
 	inode->i_gid = current_fsgid();
 	set_nlink(inode, 1);
-	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+	inode->i_mtime = inode->i_atime = inode_ctime_set_current(inode);
 	HFS_I(inode)->flags = 0;
 	HFS_I(inode)->rsrc_inode = NULL;
 	HFS_I(inode)->fs_blocks = 0;
@@ -355,8 +355,8 @@ static int hfs_read_inode(struct inode *inode, void *data)
 			inode->i_mode |= S_IWUGO;
 		inode->i_mode &= ~hsb->s_file_umask;
 		inode->i_mode |= S_IFREG;
-		inode->i_ctime = inode->i_atime = inode->i_mtime =
-				hfs_m_to_utime(rec->file.MdDat);
+		inode->i_atime = inode->i_mtime = hfs_m_to_utime(rec->file.MdDat);
+		inode_ctime_set(inode, inode->i_mtime);
 		inode->i_op = &hfs_file_inode_operations;
 		inode->i_fop = &hfs_file_operations;
 		inode->i_mapping->a_ops = &hfs_aops;
@@ -366,8 +366,8 @@ static int hfs_read_inode(struct inode *inode, void *data)
 		inode->i_size = be16_to_cpu(rec->dir.Val) + 2;
 		HFS_I(inode)->fs_blocks = 0;
 		inode->i_mode = S_IFDIR | (S_IRWXUGO & ~hsb->s_dir_umask);
-		inode->i_ctime = inode->i_atime = inode->i_mtime =
-				hfs_m_to_utime(rec->dir.MdDat);
+		inode->i_atime = inode->i_mtime = hfs_m_to_utime(rec->dir.MdDat);
+		inode_ctime_set(inode, inode->i_mtime);
 		inode->i_op = &hfs_dir_inode_operations;
 		inode->i_fop = &hfs_dir_operations;
 		break;
@@ -654,8 +654,7 @@ int hfs_inode_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
 
 		truncate_setsize(inode, attr->ia_size);
 		hfs_file_truncate(inode);
-		inode->i_atime = inode->i_mtime = inode->i_ctime =
-						  current_time(inode);
+		inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
 	}
 
 	setattr_copy(&nop_mnt_idmap, inode, attr);
diff --git a/fs/hfs/sysdep.c b/fs/hfs/sysdep.c
index 2875961fdc10..e2949390fadc 100644
--- a/fs/hfs/sysdep.c
+++ b/fs/hfs/sysdep.c
@@ -28,7 +28,7 @@ static int hfs_revalidate_dentry(struct dentry *dentry, unsigned int flags)
 	/* fix up inode on a timezone change */
 	diff = sys_tz.tz_minuteswest * 60 - HFS_I(inode)->tz_secondswest;
 	if (diff) {
-		inode->i_ctime.tv_sec += diff;
+		inode_ctime_set_sec(inode, inode_ctime_peek(inode).tv_sec + diff);
 		inode->i_atime.tv_sec += diff;
 		inode->i_mtime.tv_sec += diff;
 		HFS_I(inode)->tz_secondswest += diff;
-- 
2.41.0

[PATCH 36/79] hfsplus: switch to new ctime accessors

[Jeff Layton]

In later patches, we're going to change how the ctime.tv_nsec field is
utilized. Switch to using accessor functions instead of raw accesses of
inode->i_ctime.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/hfsplus/catalog.c |  8 ++++----
 fs/hfsplus/dir.c     |  6 +++---
 fs/hfsplus/inode.c   | 14 +++++++-------
 3 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/fs/hfsplus/catalog.c b/fs/hfsplus/catalog.c
index 35472cba750e..0e1938729669 100644
--- a/fs/hfsplus/catalog.c
+++ b/fs/hfsplus/catalog.c
@@ -312,7 +312,7 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir,
 	dir->i_size++;
 	if (S_ISDIR(inode->i_mode))
 		hfsplus_subfolders_inc(dir);
-	dir->i_mtime = dir->i_ctime = current_time(dir);
+	dir->i_mtime = inode_ctime_set_current(dir);
 	hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);
 
 	hfs_find_exit(&fd);
@@ -417,7 +417,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, const struct qstr *str)
 	dir->i_size--;
 	if (type == HFSPLUS_FOLDER)
 		hfsplus_subfolders_dec(dir);
-	dir->i_mtime = dir->i_ctime = current_time(dir);
+	dir->i_mtime = inode_ctime_set_current(dir);
 	hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);
 
 	if (type == HFSPLUS_FILE || type == HFSPLUS_FOLDER) {
@@ -494,7 +494,7 @@ int hfsplus_rename_cat(u32 cnid,
 	dst_dir->i_size++;
 	if (type == HFSPLUS_FOLDER)
 		hfsplus_subfolders_inc(dst_dir);
-	dst_dir->i_mtime = dst_dir->i_ctime = current_time(dst_dir);
+	dst_dir->i_mtime = inode_ctime_set_current(dst_dir);
 
 	/* finally remove the old entry */
 	err = hfsplus_cat_build_key(sb, src_fd.search_key,
@@ -511,7 +511,7 @@ int hfsplus_rename_cat(u32 cnid,
 	src_dir->i_size--;
 	if (type == HFSPLUS_FOLDER)
 		hfsplus_subfolders_dec(src_dir);
-	src_dir->i_mtime = src_dir->i_ctime = current_time(src_dir);
+	src_dir->i_mtime = inode_ctime_set_current(src_dir);
 
 	/* remove old thread entry */
 	hfsplus_cat_build_key_with_cnid(sb, src_fd.search_key, cnid);
diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index 56fb5f1312e7..e7b6de12ecef 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -346,7 +346,7 @@ static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir,
 	inc_nlink(inode);
 	hfsplus_instantiate(dst_dentry, inode, cnid);
 	ihold(inode);
-	inode->i_ctime = current_time(inode);
+	inode_ctime_set_current(inode);
 	mark_inode_dirty(inode);
 	sbi->file_count++;
 	hfsplus_mark_mdb_dirty(dst_dir->i_sb);
@@ -405,7 +405,7 @@ static int hfsplus_unlink(struct inode *dir, struct dentry *dentry)
 			hfsplus_delete_inode(inode);
 	} else
 		sbi->file_count--;
-	inode->i_ctime = current_time(inode);
+	inode_ctime_set_current(inode);
 	mark_inode_dirty(inode);
 out:
 	mutex_unlock(&sbi->vh_mutex);
@@ -426,7 +426,7 @@ static int hfsplus_rmdir(struct inode *dir, struct dentry *dentry)
 	if (res)
 		goto out;
 	clear_nlink(inode);
-	inode->i_ctime = current_time(inode);
+	inode_ctime_set_current(inode);
 	hfsplus_delete_inode(inode);
 	mark_inode_dirty(inode);
 out:
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index 7d1a675e037d..b9c02df839c8 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -267,7 +267,7 @@ static int hfsplus_setattr(struct mnt_idmap *idmap,
 		}
 		truncate_setsize(inode, attr->ia_size);
 		hfsplus_file_truncate(inode);
-		inode->i_mtime = inode->i_ctime = current_time(inode);
+		inode->i_mtime = inode_ctime_set_current(inode);
 	}
 
 	setattr_copy(&nop_mnt_idmap, inode, attr);
@@ -392,7 +392,7 @@ struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir,
 	inode->i_ino = sbi->next_cnid++;
 	inode_init_owner(&nop_mnt_idmap, inode, dir, mode);
 	set_nlink(inode, 1);
-	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+	inode->i_mtime = inode->i_atime = inode_ctime_set_current(inode);
 
 	hip = HFSPLUS_I(inode);
 	INIT_LIST_HEAD(&hip->open_dir_list);
@@ -523,7 +523,7 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
 		inode->i_size = 2 + be32_to_cpu(folder->valence);
 		inode->i_atime = hfsp_mt2ut(folder->access_date);
 		inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
-		inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
+		inode_ctime_set(inode, hfsp_mt2ut(folder->attribute_mod_date));
 		HFSPLUS_I(inode)->create_date = folder->create_date;
 		HFSPLUS_I(inode)->fs_blocks = 0;
 		if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
@@ -564,7 +564,7 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
 		}
 		inode->i_atime = hfsp_mt2ut(file->access_date);
 		inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
-		inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
+		inode_ctime_set(inode, hfsp_mt2ut(file->attribute_mod_date));
 		HFSPLUS_I(inode)->create_date = file->create_date;
 	} else {
 		pr_err("bad catalog entry used to create inode\n");
@@ -609,7 +609,7 @@ int hfsplus_cat_write_inode(struct inode *inode)
 		hfsplus_cat_set_perms(inode, &folder->permissions);
 		folder->access_date = hfsp_ut2mt(inode->i_atime);
 		folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
-		folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
+		folder->attribute_mod_date = hfsp_ut2mt(inode_ctime_peek(inode));
 		folder->valence = cpu_to_be32(inode->i_size - 2);
 		if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
 			folder->subfolders =
@@ -644,7 +644,7 @@ int hfsplus_cat_write_inode(struct inode *inode)
 			file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
 		file->access_date = hfsp_ut2mt(inode->i_atime);
 		file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
-		file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
+		file->attribute_mod_date = hfsp_ut2mt(inode_ctime_peek(inode));
 		hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
 					 sizeof(struct hfsplus_cat_file));
 	}
@@ -700,7 +700,7 @@ int hfsplus_fileattr_set(struct mnt_idmap *idmap,
 	else
 		hip->userflags &= ~HFSPLUS_FLG_NODUMP;
 
-	inode->i_ctime = current_time(inode);
+	inode_ctime_set_current(inode);
 	mark_inode_dirty(inode);
 
 	return 0;
-- 
2.41.0

[PATCH 40/79] isofs: switch to new ctime accessors

[Jeff Layton]

In later patches, we're going to change how the ctime.tv_nsec field is
utilized. Switch to using accessor functions instead of raw accesses of
inode->i_ctime.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/isofs/inode.c |  4 ++--
 fs/isofs/rock.c  | 16 +++++++---------
 2 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index df9d70588b60..035fa0271d6e 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -1425,10 +1425,10 @@ static int isofs_read_inode(struct inode *inode, int relocated)
 
 	inode->i_mtime.tv_sec =
 	inode->i_atime.tv_sec =
-	inode->i_ctime.tv_sec = iso_date(de->date, high_sierra);
+	inode_ctime_set_sec(inode, iso_date(de->date, high_sierra));
 	inode->i_mtime.tv_nsec =
 	inode->i_atime.tv_nsec =
-	inode->i_ctime.tv_nsec = 0;
+	inode_ctime_set_nsec(inode, 0);
 
 	ei->i_first_extent = (isonum_733(de->extent) +
 			isonum_711(de->ext_attr_length));
diff --git a/fs/isofs/rock.c b/fs/isofs/rock.c
index 48f58c6c9e69..6b7f2a62124d 100644
--- a/fs/isofs/rock.c
+++ b/fs/isofs/rock.c
@@ -421,10 +421,9 @@ parse_rock_ridge_inode_internal(struct iso_directory_record *de,
 			/* Rock ridge never appears on a High Sierra disk */
 			cnt = 0;
 			if (rr->u.TF.flags & TF_CREATE) {
-				inode->i_ctime.tv_sec =
-				    iso_date(rr->u.TF.times[cnt++].time,
-					     0);
-				inode->i_ctime.tv_nsec = 0;
+				inode_ctime_set_sec(inode,
+						    iso_date(rr->u.TF.times[cnt++].time, 0));
+				inode_ctime_set_nsec(inode, 0);
 			}
 			if (rr->u.TF.flags & TF_MODIFY) {
 				inode->i_mtime.tv_sec =
@@ -439,10 +438,9 @@ parse_rock_ridge_inode_internal(struct iso_directory_record *de,
 				inode->i_atime.tv_nsec = 0;
 			}
 			if (rr->u.TF.flags & TF_ATTRIBUTES) {
-				inode->i_ctime.tv_sec =
-				    iso_date(rr->u.TF.times[cnt++].time,
-					     0);
-				inode->i_ctime.tv_nsec = 0;
+				inode_ctime_set_sec(inode,
+						    iso_date(rr->u.TF.times[cnt++].time, 0));
+				inode_ctime_set_nsec(inode, 0);
 			}
 			break;
 		case SIG('S', 'L'):
@@ -534,7 +532,7 @@ parse_rock_ridge_inode_internal(struct iso_directory_record *de,
 			inode->i_size = reloc->i_size;
 			inode->i_blocks = reloc->i_blocks;
 			inode->i_atime = reloc->i_atime;
-			inode->i_ctime = reloc->i_ctime;
+			inode_ctime_set(inode, inode_ctime_peek(reloc));
 			inode->i_mtime = reloc->i_mtime;
 			iput(reloc);
 			break;
-- 
2.41.0

[PATCH 55/79] proc: switch to new ctime accessors

[Jeff Layton]

In later patches, we're going to change how the ctime.tv_nsec field is
utilized. Switch to using accessor functions instead of raw accesses of
inode->i_ctime.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/proc/base.c        | 2 +-
 fs/proc/inode.c       | 2 +-
 fs/proc/proc_sysctl.c | 2 +-
 fs/proc/self.c        | 2 +-
 fs/proc/thread_self.c | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 05452c3b9872..354f7f9ad05b 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1902,7 +1902,7 @@ struct inode *proc_pid_make_inode(struct super_block *sb,
 	ei = PROC_I(inode);
 	inode->i_mode = mode;
 	inode->i_ino = get_next_ino();
-	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+	inode->i_mtime = inode->i_atime = inode_ctime_set_current(inode);
 	inode->i_op = &proc_def_inode_operations;
 
 	/*
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 67b09a1d9433..61f4fc0a6261 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -660,7 +660,7 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
 
 	inode->i_private = de->data;
 	inode->i_ino = de->low_ino;
-	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+	inode->i_mtime = inode->i_atime = inode_ctime_set_current(inode);
 	PROC_I(inode)->pde = de;
 	if (is_empty_pde(de)) {
 		make_empty_dir_inode(inode);
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 4e5488975415..abb7e524b28b 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -463,7 +463,7 @@ static struct inode *proc_sys_make_inode(struct super_block *sb,
 	head->count++;
 	spin_unlock(&sysctl_lock);
 
-	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+	inode->i_mtime = inode->i_atime = inode_ctime_set_current(inode);
 	inode->i_mode = table->mode;
 	if (!S_ISDIR(table->mode)) {
 		inode->i_mode |= S_IFREG;
diff --git a/fs/proc/self.c b/fs/proc/self.c
index 72cd69bcaf4a..bb5dbdd30627 100644
--- a/fs/proc/self.c
+++ b/fs/proc/self.c
@@ -46,7 +46,7 @@ int proc_setup_self(struct super_block *s)
 		struct inode *inode = new_inode(s);
 		if (inode) {
 			inode->i_ino = self_inum;
-			inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+			inode->i_mtime = inode->i_atime = inode_ctime_set_current(inode);
 			inode->i_mode = S_IFLNK | S_IRWXUGO;
 			inode->i_uid = GLOBAL_ROOT_UID;
 			inode->i_gid = GLOBAL_ROOT_GID;
diff --git a/fs/proc/thread_self.c b/fs/proc/thread_self.c
index a553273fbd41..373680bd0635 100644
--- a/fs/proc/thread_self.c
+++ b/fs/proc/thread_self.c
@@ -46,7 +46,7 @@ int proc_setup_thread_self(struct super_block *s)
 		struct inode *inode = new_inode(s);
 		if (inode) {
 			inode->i_ino = thread_self_inum;
-			inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+			inode->i_mtime = inode->i_atime = inode_ctime_set_current(inode);
 			inode->i_mode = S_IFLNK | S_IRWXUGO;
 			inode->i_uid = GLOBAL_ROOT_UID;
 			inode->i_gid = GLOBAL_ROOT_GID;
-- 
2.41.0

Re: [PATCH 55/79] proc: switch to new ctime accessors

[Luis Chamberlain]

On Wed, Jun 21, 2023 at 10:46:08AM -0400, Jeff Layton wrote:
> In later patches, we're going to change how the ctime.tv_nsec field is
> utilized. Switch to using accessor functions instead of raw accesses of
> inode->i_ctime.
> 
> Signed-off-by: Jeff Layton <jlayton@kernel.org>

Acked-by: Luis Chamberlain <mcgrof@kernel.org>

  Luis

[PATCH 69/79] vboxsf: switch to new ctime accessors

[Jeff Layton]

In later patches, we're going to change how the ctime.tv_nsec field is
utilized. Switch to using accessor functions instead of raw accesses of
inode->i_ctime.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/vboxsf/utils.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/vboxsf/utils.c b/fs/vboxsf/utils.c
index dd0ae1188e87..a76dc1ec10f8 100644
--- a/fs/vboxsf/utils.c
+++ b/fs/vboxsf/utils.c
@@ -128,8 +128,8 @@ int vboxsf_init_inode(struct vboxsf_sbi *sbi, struct inode *inode,
 
 	inode->i_atime = ns_to_timespec64(
 				 info->access_time.ns_relative_to_unix_epoch);
-	inode->i_ctime = ns_to_timespec64(
-				 info->change_time.ns_relative_to_unix_epoch);
+	inode_ctime_set(inode,
+			ns_to_timespec64(info->change_time.ns_relative_to_unix_epoch));
 	inode->i_mtime = ns_to_timespec64(
 			   info->modification_time.ns_relative_to_unix_epoch);
 	return 0;
-- 
2.41.0

[PATCH 71/79] zonefs: switch to new ctime accessors

[Jeff Layton]

In later patches, we're going to change how the ctime.tv_nsec field is
utilized. Switch to using accessor functions instead of raw accesses of
inode->i_ctime.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/zonefs/super.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
index bbe44a26a8e5..75be0e039ccf 100644
--- a/fs/zonefs/super.c
+++ b/fs/zonefs/super.c
@@ -658,7 +658,8 @@ static struct inode *zonefs_get_file_inode(struct inode *dir,
 
 	inode->i_ino = ino;
 	inode->i_mode = z->z_mode;
-	inode->i_ctime = inode->i_mtime = inode->i_atime = dir->i_ctime;
+	inode->i_mtime = inode->i_atime = inode_ctime_peek(dir);
+	inode_ctime_set(inode, inode->i_mtime);
 	inode->i_uid = z->z_uid;
 	inode->i_gid = z->z_gid;
 	inode->i_size = z->z_wpoffset;
@@ -694,7 +695,8 @@ static struct inode *zonefs_get_zgroup_inode(struct super_block *sb,
 	inode->i_ino = ino;
 	inode_init_owner(&nop_mnt_idmap, inode, root, S_IFDIR | 0555);
 	inode->i_size = sbi->s_zgroup[ztype].g_nr_zones;
-	inode->i_ctime = inode->i_mtime = inode->i_atime = root->i_ctime;
+	inode->i_mtime = inode->i_atime = inode_ctime_peek(root);
+	inode_ctime_set(inode, inode->i_mtime);
 	inode->i_private = &sbi->s_zgroup[ztype];
 	set_nlink(inode, 2);
 
@@ -1317,7 +1319,7 @@ static int zonefs_fill_super(struct super_block *sb, void *data, int silent)
 
 	inode->i_ino = bdev_nr_zones(sb->s_bdev);
 	inode->i_mode = S_IFDIR | 0555;
-	inode->i_ctime = inode->i_mtime = inode->i_atime = current_time(inode);
+	inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
 	inode->i_op = &zonefs_dir_inode_operations;
 	inode->i_fop = &zonefs_dir_operations;
 	inode->i_size = 2;
-- 
2.41.0

Re: [PATCH 71/79] zonefs: switch to new ctime accessors

[Damien Le Moal]

On 6/21/23 23:46, Jeff Layton wrote:
> In later patches, we're going to change how the ctime.tv_nsec field is
> utilized. Switch to using accessor functions instead of raw accesses of
> inode->i_ctime.
> 
> Signed-off-by: Jeff Layton <jlayton@kernel.org>

Modulo the proposed renaming for inode_ctime_peek(), looks good.

Acked-by: Damien Le Moal <dlemoal@kernel.org>

> ---
>  fs/zonefs/super.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
> index bbe44a26a8e5..75be0e039ccf 100644
> --- a/fs/zonefs/super.c
> +++ b/fs/zonefs/super.c
> @@ -658,7 +658,8 @@ static struct inode *zonefs_get_file_inode(struct inode *dir,
>  
>  	inode->i_ino = ino;
>  	inode->i_mode = z->z_mode;
> -	inode->i_ctime = inode->i_mtime = inode->i_atime = dir->i_ctime;
> +	inode->i_mtime = inode->i_atime = inode_ctime_peek(dir);
> +	inode_ctime_set(inode, inode->i_mtime);
>  	inode->i_uid = z->z_uid;
>  	inode->i_gid = z->z_gid;
>  	inode->i_size = z->z_wpoffset;
> @@ -694,7 +695,8 @@ static struct inode *zonefs_get_zgroup_inode(struct super_block *sb,
>  	inode->i_ino = ino;
>  	inode_init_owner(&nop_mnt_idmap, inode, root, S_IFDIR | 0555);
>  	inode->i_size = sbi->s_zgroup[ztype].g_nr_zones;
> -	inode->i_ctime = inode->i_mtime = inode->i_atime = root->i_ctime;
> +	inode->i_mtime = inode->i_atime = inode_ctime_peek(root);
> +	inode_ctime_set(inode, inode->i_mtime);
>  	inode->i_private = &sbi->s_zgroup[ztype];
>  	set_nlink(inode, 2);
>  
> @@ -1317,7 +1319,7 @@ static int zonefs_fill_super(struct super_block *sb, void *data, int silent)
>  
>  	inode->i_ino = bdev_nr_zones(sb->s_bdev);
>  	inode->i_mode = S_IFDIR | 0555;
> -	inode->i_ctime = inode->i_mtime = inode->i_atime = current_time(inode);
> +	inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
>  	inode->i_op = &zonefs_dir_inode_operations;
>  	inode->i_fop = &zonefs_dir_operations;
>  	inode->i_size = 2;

-- 
Damien Le Moal
Western Digital Research

Re: [PATCH 15/79] bfs: switch to new ctime accessors

[Christian Brauner]

On Fri, Jun 23, 2023 at 02:33:26PM +0200, Christian Brauner wrote:
> On Thu, Jun 22, 2023 at 04:57:47PM +0200, Jan Kara wrote:
> > On Thu 22-06-23 08:51:58, Jeff Layton wrote:
> > > On Thu, 2023-06-22 at 14:30 +0200, Jan Kara wrote:
> > > > On Wed 21-06-23 12:57:19, Jeff Layton wrote:
> > > > > On Wed, 2023-06-21 at 18:48 +0200, Jan Kara wrote:
> > > > > > On Wed 21-06-23 10:45:28, Jeff Layton wrote:
> > > > > > > In later patches, we're going to change how the ctime.tv_nsec field is
> > > > > > > utilized. Switch to using accessor functions instead of raw accesses of
> > > > > > > inode->i_ctime.
> > > > > > > 
> > > > > > > Signed-off-by: Jeff Layton <jlayton@kernel.org>
> > > > > > 
> > > > > > ...
> > > > > > 
> > > > > > > diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
> > > > > > > index 1926bec2c850..c964316be32b 100644
> > > > > > > --- a/fs/bfs/inode.c
> > > > > > > +++ b/fs/bfs/inode.c
> > > > > > > @@ -82,10 +82,10 @@ struct inode *bfs_iget(struct super_block *sb, unsigned long ino)
> > > > > > >  	inode->i_blocks = BFS_FILEBLOCKS(di);
> > > > > > >  	inode->i_atime.tv_sec =  le32_to_cpu(di->i_atime);
> > > > > > >  	inode->i_mtime.tv_sec =  le32_to_cpu(di->i_mtime);
> > > > > > > -	inode->i_ctime.tv_sec =  le32_to_cpu(di->i_ctime);
> > > > > > > +	inode_ctime_set_sec(inode, le32_to_cpu(di->i_ctime));
> > > > > > >  	inode->i_atime.tv_nsec = 0;
> > > > > > >  	inode->i_mtime.tv_nsec = 0;
> > > > > > > -	inode->i_ctime.tv_nsec = 0;
> > > > > > > +	inode_ctime_set_nsec(inode, 0);
> > > > > > 
> > > > > > So I'm somewhat wondering here - in other filesystem you construct
> > > > > > timespec64 and then use inode_ctime_set(). Here you use
> > > > > > inode_ctime_set_sec() + inode_ctime_set_nsec(). What's the benefit? It
> > > > > > seems these two functions are not used that much some maybe we could just
> > > > > > live with just inode_ctime_set() and constructing timespec64 when needed?
> > > > > > 
> > > > > > 								Honza
> > > > > 
> > > > > The main advantage is that by using that, I didn't need to do quite so
> > > > > much of this conversion by hand. My coccinelle skills are pretty
> > > > > primitive. I went with whatever conversion was going to give minimal
> > > > > changes, to the existing accesses for the most part.
> > > > > 
> > > > > We could certainly do it the way you suggest, it just means having to
> > > > > re-touch a lot of this code by hand, or someone with better coccinelle
> > > > > chops suggesting a way to declare a temporary variables in place.
> > > > 
> > > > Well, maybe temporary variables aren't that convenient but we could provide
> > > > function setting ctime from sec & nsec value without having to declare
> > > > temporary timespec64? Attached is a semantic patch that should deal with
> > > > that - at least it seems to handle all the cases I've found.
> > > > 
> > > 
> > > Ok, let me try respinning this with your cocci script and see how it
> > > looks.
> > > 
> > > Damien also suggested in a reply to the zonefs patch a preference for
> > > the naming style you have above. Should I also rename these like?
> > > 
> > >     inode_ctime_peek -> inode_get_ctime
> > >     inode_ctime_set -> inode_set_ctime
> > > 
> > > This would be the time to change it if that's preferred.
> > 
> > I don't really care much so whatever you decide is better :)
> 
> I have a mild preference for inode_{get,set}_ctime().

Jeff, did you plan on sending a v2 with this renamed or do you want me
to pick this up now?

Re: [PATCH 15/79] bfs: switch to new ctime accessors

[Jeff Layton]

On Mon, 2023-07-03 at 12:12 +0200, Christian Brauner wrote:
> On Fri, Jun 23, 2023 at 02:33:26PM +0200, Christian Brauner wrote:
> > On Thu, Jun 22, 2023 at 04:57:47PM +0200, Jan Kara wrote:
> > > On Thu 22-06-23 08:51:58, Jeff Layton wrote:
> > > > On Thu, 2023-06-22 at 14:30 +0200, Jan Kara wrote:
> > > > > On Wed 21-06-23 12:57:19, Jeff Layton wrote:
> > > > > > On Wed, 2023-06-21 at 18:48 +0200, Jan Kara wrote:
> > > > > > > On Wed 21-06-23 10:45:28, Jeff Layton wrote:
> > > > > > > > In later patches, we're going to change how the ctime.tv_nsec field is
> > > > > > > > utilized. Switch to using accessor functions instead of raw accesses of
> > > > > > > > inode->i_ctime.
> > > > > > > > 
> > > > > > > > Signed-off-by: Jeff Layton <jlayton@kernel.org>
> > > > > > > 
> > > > > > > ...
> > > > > > > 
> > > > > > > > diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
> > > > > > > > index 1926bec2c850..c964316be32b 100644
> > > > > > > > --- a/fs/bfs/inode.c
> > > > > > > > +++ b/fs/bfs/inode.c
> > > > > > > > @@ -82,10 +82,10 @@ struct inode *bfs_iget(struct super_block *sb, unsigned long ino)
> > > > > > > >  	inode->i_blocks = BFS_FILEBLOCKS(di);
> > > > > > > >  	inode->i_atime.tv_sec =  le32_to_cpu(di->i_atime);
> > > > > > > >  	inode->i_mtime.tv_sec =  le32_to_cpu(di->i_mtime);
> > > > > > > > -	inode->i_ctime.tv_sec =  le32_to_cpu(di->i_ctime);
> > > > > > > > +	inode_ctime_set_sec(inode, le32_to_cpu(di->i_ctime));
> > > > > > > >  	inode->i_atime.tv_nsec = 0;
> > > > > > > >  	inode->i_mtime.tv_nsec = 0;
> > > > > > > > -	inode->i_ctime.tv_nsec = 0;
> > > > > > > > +	inode_ctime_set_nsec(inode, 0);
> > > > > > > 
> > > > > > > So I'm somewhat wondering here - in other filesystem you construct
> > > > > > > timespec64 and then use inode_ctime_set(). Here you use
> > > > > > > inode_ctime_set_sec() + inode_ctime_set_nsec(). What's the benefit? It
> > > > > > > seems these two functions are not used that much some maybe we could just
> > > > > > > live with just inode_ctime_set() and constructing timespec64 when needed?
> > > > > > > 
> > > > > > > 								Honza
> > > > > > 
> > > > > > The main advantage is that by using that, I didn't need to do quite so
> > > > > > much of this conversion by hand. My coccinelle skills are pretty
> > > > > > primitive. I went with whatever conversion was going to give minimal
> > > > > > changes, to the existing accesses for the most part.
> > > > > > 
> > > > > > We could certainly do it the way you suggest, it just means having to
> > > > > > re-touch a lot of this code by hand, or someone with better coccinelle
> > > > > > chops suggesting a way to declare a temporary variables in place.
> > > > > 
> > > > > Well, maybe temporary variables aren't that convenient but we could provide
> > > > > function setting ctime from sec & nsec value without having to declare
> > > > > temporary timespec64? Attached is a semantic patch that should deal with
> > > > > that - at least it seems to handle all the cases I've found.
> > > > > 
> > > > 
> > > > Ok, let me try respinning this with your cocci script and see how it
> > > > looks.
> > > > 
> > > > Damien also suggested in a reply to the zonefs patch a preference for
> > > > the naming style you have above. Should I also rename these like?
> > > > 
> > > >     inode_ctime_peek -> inode_get_ctime
> > > >     inode_ctime_set -> inode_set_ctime
> > > > 
> > > > This would be the time to change it if that's preferred.
> > > 
> > > I don't really care much so whatever you decide is better :)
> > 
> > I have a mild preference for inode_{get,set}_ctime().
> 
> Jeff, did you plan on sending a v2 with this renamed or do you want me
> to pick this up now?

I'm working on a new set that I'll send out in a few days. Sorry it has
taken a while, I spent quite a bit of time trying to improve my
coccinelle chops for this.

Thanks,
-- 
Jeff Layton <jlayton@kernel.org>

Re: [PATCH 15/79] bfs: switch to new ctime accessors

[Christian Brauner]

On Mon, Jul 03, 2023 at 06:46:33AM -0400, Jeff Layton wrote:
> On Mon, 2023-07-03 at 12:12 +0200, Christian Brauner wrote:
> > On Fri, Jun 23, 2023 at 02:33:26PM +0200, Christian Brauner wrote:
> > > On Thu, Jun 22, 2023 at 04:57:47PM +0200, Jan Kara wrote:
> > > > On Thu 22-06-23 08:51:58, Jeff Layton wrote:
> > > > > On Thu, 2023-06-22 at 14:30 +0200, Jan Kara wrote:
> > > > > > On Wed 21-06-23 12:57:19, Jeff Layton wrote:
> > > > > > > On Wed, 2023-06-21 at 18:48 +0200, Jan Kara wrote:
> > > > > > > > On Wed 21-06-23 10:45:28, Jeff Layton wrote:
> > > > > > > > > In later patches, we're going to change how the ctime.tv_nsec field is
> > > > > > > > > utilized. Switch to using accessor functions instead of raw accesses of
> > > > > > > > > inode->i_ctime.
> > > > > > > > > 
> > > > > > > > > Signed-off-by: Jeff Layton <jlayton@kernel.org>
> > > > > > > > 
> > > > > > > > ...
> > > > > > > > 
> > > > > > > > > diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
> > > > > > > > > index 1926bec2c850..c964316be32b 100644
> > > > > > > > > --- a/fs/bfs/inode.c
> > > > > > > > > +++ b/fs/bfs/inode.c
> > > > > > > > > @@ -82,10 +82,10 @@ struct inode *bfs_iget(struct super_block *sb, unsigned long ino)
> > > > > > > > >  	inode->i_blocks = BFS_FILEBLOCKS(di);
> > > > > > > > >  	inode->i_atime.tv_sec =  le32_to_cpu(di->i_atime);
> > > > > > > > >  	inode->i_mtime.tv_sec =  le32_to_cpu(di->i_mtime);
> > > > > > > > > -	inode->i_ctime.tv_sec =  le32_to_cpu(di->i_ctime);
> > > > > > > > > +	inode_ctime_set_sec(inode, le32_to_cpu(di->i_ctime));
> > > > > > > > >  	inode->i_atime.tv_nsec = 0;
> > > > > > > > >  	inode->i_mtime.tv_nsec = 0;
> > > > > > > > > -	inode->i_ctime.tv_nsec = 0;
> > > > > > > > > +	inode_ctime_set_nsec(inode, 0);
> > > > > > > > 
> > > > > > > > So I'm somewhat wondering here - in other filesystem you construct
> > > > > > > > timespec64 and then use inode_ctime_set(). Here you use
> > > > > > > > inode_ctime_set_sec() + inode_ctime_set_nsec(). What's the benefit? It
> > > > > > > > seems these two functions are not used that much some maybe we could just
> > > > > > > > live with just inode_ctime_set() and constructing timespec64 when needed?
> > > > > > > > 
> > > > > > > > 								Honza
> > > > > > > 
> > > > > > > The main advantage is that by using that, I didn't need to do quite so
> > > > > > > much of this conversion by hand. My coccinelle skills are pretty
> > > > > > > primitive. I went with whatever conversion was going to give minimal
> > > > > > > changes, to the existing accesses for the most part.
> > > > > > > 
> > > > > > > We could certainly do it the way you suggest, it just means having to
> > > > > > > re-touch a lot of this code by hand, or someone with better coccinelle
> > > > > > > chops suggesting a way to declare a temporary variables in place.
> > > > > > 
> > > > > > Well, maybe temporary variables aren't that convenient but we could provide
> > > > > > function setting ctime from sec & nsec value without having to declare
> > > > > > temporary timespec64? Attached is a semantic patch that should deal with
> > > > > > that - at least it seems to handle all the cases I've found.
> > > > > > 
> > > > > 
> > > > > Ok, let me try respinning this with your cocci script and see how it
> > > > > looks.
> > > > > 
> > > > > Damien also suggested in a reply to the zonefs patch a preference for
> > > > > the naming style you have above. Should I also rename these like?
> > > > > 
> > > > >     inode_ctime_peek -> inode_get_ctime
> > > > >     inode_ctime_set -> inode_set_ctime
> > > > > 
> > > > > This would be the time to change it if that's preferred.
> > > > 
> > > > I don't really care much so whatever you decide is better :)
> > > 
> > > I have a mild preference for inode_{get,set}_ctime().
> > 
> > Jeff, did you plan on sending a v2 with this renamed or do you want me
> > to pick this up now?
> 
> I'm working on a new set that I'll send out in a few days. Sorry it has
> taken a while, I spent quite a bit of time trying to improve my
> coccinelle chops for this.

Absolutely no problem of course. I just wanted to check that I didn't
pointlessly delay you by not taking care of this.

Thanks!

Re: [PATCH 00/79] fs: new accessors for inode->i_ctime

[Christian Brauner]

On Wed, Jun 21, 2023 at 03:52:27PM -0400, Jeff Layton wrote:
> On Wed, 2023-06-21 at 15:21 -0400, Steven Rostedt wrote:
> > On Wed, 21 Jun 2023 10:45:05 -0400
> > Jeff Layton <jlayton@kernel.org> wrote:
> > 
> > > Most of this conversion was done via coccinelle, with a few of the more
> > > non-standard accesses done by hand. There should be no behavioral
> > > changes with this set. That will come later, as we convert individual
> > > filesystems to use multigrain timestamps.
> > 
> > BTW, Linus has suggested to me that whenever a conccinelle script is used,
> > it should be included in the change log.
> > 
> 
> Ok, here's what I have. I note again that my usage of coccinelle is
> pretty primitive, so I ended up doing a fair bit of by-hand fixing after
> applying these.
> 
> Given the way that this change is broken up into 77 patches by
> subsystem, to which changelogs should I add it? I could add it to the
> "infrastructure" patch, but that's the one where I _didn't_ use it. 
> 
> Maybe to patch #79 (the one that renames i_ctime)?

That works. I can also put this into a merge commit or pr message.

Re: [PATCH 00/79] fs: new accessors for inode->i_ctime

[Luis Chamberlain]

On Wed, Jun 21, 2023 at 03:21:41PM -0400, Steven Rostedt wrote:
> On Wed, 21 Jun 2023 10:45:05 -0400
> Jeff Layton <jlayton@kernel.org> wrote:
> 
> > Most of this conversion was done via coccinelle, with a few of the more
> > non-standard accesses done by hand. There should be no behavioral
> > changes with this set. That will come later, as we convert individual
> > filesystems to use multigrain timestamps.
> 
> BTW, Linus has suggested to me that whenever a conccinelle script is used,
> it should be included in the change log.

Sometimes people like the coccinelle included in the commit, sometimes
people don't [0], it really ends up being up to a subjective maintainer
preference. A compromise could be to use git notes as these are
optional, however if we want to go down that path we should try to make
a general consensus on it so we can send a consistent message.

[0] https://lore.kernel.org/all/20230512073100.GC32559@twin.jikos.cz/

  Luis

Re: [PATCH 01/79] fs: add ctime accessors infrastructure

[Jeff Layton]

On Thu, 2023-06-22 at 09:46 +0900, Damien Le Moal wrote:
> On 6/21/23 23:45, Jeff Layton wrote:
> > struct timespec64 has unused bits in the tv_nsec field that can be used
> > for other purposes. In future patches, we're going to change how the
> > inode->i_ctime is accessed in certain inodes in order to make use of
> > them. In order to do that safely though, we'll need to eradicate raw
> > accesses of the inode->i_ctime field from the kernel.
> > 
> > Add new accessor functions for the ctime that we can use to replace them.
> > 
> > Signed-off-by: Jeff Layton <jlayton@kernel.org>
> 
> [...]
> 
> > +/**
> > + * inode_ctime_peek - fetch the current ctime from the inode
> > + * @inode: inode from which to fetch ctime
> > + *
> > + * Grab the current ctime from the inode and return it.
> > + */
> > +static inline struct timespec64 inode_ctime_peek(const struct inode *inode)
> 
> To be consistent with inode_ctime_set(), why not call this one inode_ctime_get()

In later patches fetching the ctime for presentation may have side
effects on certain filesystems. Using "peek" here is a hint that we want
to avoid those side effects in these calls.

> ? Also, inode_set_ctime() & inode_get_ctime() may be a little more natural. But
> no strong opinion about that though.
> 

I like the consistency of the inode_ctime_* prefix. It makes it simpler
to find these calls when grepping, etc.

That said, my opinions on naming are pretty loosely-held, so if the
consensus is that the names should as you suggest, I'll go along with
it.
-- 
Jeff Layton <jlayton@kernel.org>

Re: [PATCH 01/79] fs: add ctime accessors infrastructure

[Luis Chamberlain]

On Wed, Jun 21, 2023 at 10:45:06AM -0400, Jeff Layton wrote:
> struct timespec64 has unused bits in the tv_nsec field that can be used
> for other purposes. In future patches, we're going to change how the
> inode->i_ctime is accessed in certain inodes in order to make use of
> them. In order to do that safely though, we'll need to eradicate raw
> accesses of the inode->i_ctime field from the kernel.
> 
> Add new accessor functions for the ctime that we can use to replace them.
> 
> Signed-off-by: Jeff Layton <jlayton@kernel.org>

Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>

  Luis

Re: [PATCH 01/79] fs: add ctime accessors infrastructure

[Randy Dunlap]

Hi Jeff,

On arch/um/, (subarch i386 or x86_64), hostfs build fails with:

../fs/hostfs/hostfs_kern.c:520:36: error: incompatible type for arg
ument 2 of 'inode_set_ctime_to_ts'
../include/linux/fs.h:1499:73: note: expected 'struct timespec64' b
ut argument is of type 'const struct hostfs_timespec *'


-- 
~Randy

Re: [PATCH 01/79] fs: add ctime accessors infrastructure

[Christian Brauner]

On Wed, Jul 12, 2023 at 08:31:55AM -0700, Randy Dunlap wrote:
> Hi Jeff,
> 
> On arch/um/, (subarch i386 or x86_64), hostfs build fails with:
> 
> ../fs/hostfs/hostfs_kern.c:520:36: error: incompatible type for arg
> ument 2 of 'inode_set_ctime_to_ts'
> ../include/linux/fs.h:1499:73: note: expected 'struct timespec64' b
> ut argument is of type 'const struct hostfs_timespec *'

Thanks for notifying us! We fixed this earlier today. The vfs.ctime
branch has been updated with the fix folded into the hostfs patch.