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From: Dave Chinner <david@fromorbit.com>
To: xfs@oss.sgi.com
Subject: [PATCH 8/9] xfs: move di_changecount to VFS inode
Date: Mon,  8 Feb 2016 15:24:20 +1100	[thread overview]
Message-ID: <1454905461-2773-9-git-send-email-david@fromorbit.com> (raw)
In-Reply-To: <1454905461-2773-1-git-send-email-david@fromorbit.com>

From: Dave Chinner <dchinner@redhat.com>

We can store the di_changecount in the i_version field of the VFS
inode and remove another 8 bytes from the xfs_icdinode.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
---
 fs/xfs/libxfs/xfs_inode_buf.c | 4 ++--
 fs/xfs/libxfs/xfs_inode_buf.h | 1 -
 fs/xfs/xfs_icache.c           | 6 ++++--
 fs/xfs/xfs_inode.c            | 2 +-
 fs/xfs/xfs_inode_item.c       | 2 +-
 fs/xfs/xfs_trans_inode.c      | 2 +-
 6 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
index 0a3f10b..9807c21 100644
--- a/fs/xfs/libxfs/xfs_inode_buf.c
+++ b/fs/xfs/libxfs/xfs_inode_buf.c
@@ -251,7 +251,7 @@ xfs_inode_from_disk(
 	to->di_flags	= be16_to_cpu(from->di_flags);
 
 	if (to->di_version == 3) {
-		to->di_changecount = be64_to_cpu(from->di_changecount);
+		inode->i_version = be64_to_cpu(from->di_changecount);
 		to->di_crtime.t_sec = be32_to_cpu(from->di_crtime.t_sec);
 		to->di_crtime.t_nsec = be32_to_cpu(from->di_crtime.t_nsec);
 		to->di_flags2 = be64_to_cpu(from->di_flags2);
@@ -300,7 +300,7 @@ xfs_inode_to_disk(
 	to->di_flags = cpu_to_be16(from->di_flags);
 
 	if (from->di_version == 3) {
-		to->di_changecount = cpu_to_be64(from->di_changecount);
+		to->di_changecount = cpu_to_be64(inode->i_version);
 		to->di_crtime.t_sec = cpu_to_be32(from->di_crtime.t_sec);
 		to->di_crtime.t_nsec = cpu_to_be32(from->di_crtime.t_nsec);
 		to->di_flags2 = cpu_to_be64(from->di_flags2);
diff --git a/fs/xfs/libxfs/xfs_inode_buf.h b/fs/xfs/libxfs/xfs_inode_buf.h
index 29fd9f1..c51bd12 100644
--- a/fs/xfs/libxfs/xfs_inode_buf.h
+++ b/fs/xfs/libxfs/xfs_inode_buf.h
@@ -47,7 +47,6 @@ struct xfs_icdinode {
 	__uint16_t	di_dmstate;	/* DMIG state info */
 	__uint16_t	di_flags;	/* random flags, XFS_DIFLAG_... */
 
-	__uint64_t	di_changecount;	/* number of attribute changes */
 	__uint64_t	di_flags2;	/* more random flags */
 
 	xfs_ictimestamp_t di_crtime;	/* time created */
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index 6401e3c..30eafad 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -138,9 +138,9 @@ xfs_inode_free(
  * When we recycle a reclaimable inode, we need to re-initialise the VFS inode
  * part of the structure. This is made more complex by the fact we store
  * information about the on-disk values in the VFS inode and so we can't just
- * overwrite it's values unconditionally. Hence we save the parameters we
+ * overwrite the values unconditionally. Hence we save the parameters we
  * need to retain across reinitialisation, and rewrite them into the VFS inode
- * after resetting it's state even if resetting fails.
+ * after reinitialisation even if it fails.
  */
 static int
 xfs_reinit_inode(
@@ -150,11 +150,13 @@ xfs_reinit_inode(
 	int		error;
 	uint32_t	nlink = inode->i_nlink;
 	uint32_t	generation = inode->i_generation;
+	uint64_t	version = inode->i_version;
 
 	error = inode_init_always(mp->m_super, inode);
 
 	set_nlink(inode, nlink);
 	inode->i_generation = generation;
+	inode->i_version = version;
 	return error;
 }
 
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index e8f87c7..16fabbf 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -841,7 +841,7 @@ xfs_ialloc(
 	ip->i_d.di_flags = 0;
 
 	if (ip->i_d.di_version == 3) {
-		ip->i_d.di_changecount = 1;
+		inode->i_version = 1;
 		ip->i_d.di_flags2 = 0;
 		ip->i_d.di_crtime.t_sec = (__int32_t)tv.tv_sec;
 		ip->i_d.di_crtime.t_nsec = (__int32_t)tv.tv_nsec;
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index 6367780..3415c63 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -364,7 +364,7 @@ xfs_inode_to_log_dinode(
 	to->di_flags = from->di_flags;
 
 	if (from->di_version == 3) {
-		to->di_changecount = from->di_changecount;
+		to->di_changecount = inode->i_version;
 		to->di_crtime.t_sec = from->di_crtime.t_sec;
 		to->di_crtime.t_nsec = from->di_crtime.t_nsec;
 		to->di_flags2 = from->di_flags2;
diff --git a/fs/xfs/xfs_trans_inode.c b/fs/xfs/xfs_trans_inode.c
index 3f0d466..11a3af0 100644
--- a/fs/xfs/xfs_trans_inode.c
+++ b/fs/xfs/xfs_trans_inode.c
@@ -117,7 +117,7 @@ xfs_trans_log_inode(
 	 */
 	if (!(ip->i_itemp->ili_item.li_desc->lid_flags & XFS_LID_DIRTY) &&
 	    IS_I_VERSION(VFS_I(ip))) {
-		ip->i_d.di_changecount = ++VFS_I(ip)->i_version;
+		VFS_I(ip)->i_version++;
 		flags |= XFS_ILOG_CORE;
 	}
 
-- 
2.5.0

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  parent reply	other threads:[~2016-02-08  4:24 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-08  4:24 [PATCH v3 0/9] xfs: gut the struct xfs_icdinode Dave Chinner
2016-02-08  4:24 ` [PATCH 1/9] xfs: introduce inode log format object Dave Chinner
2016-02-08  9:23   ` Christoph Hellwig
2016-02-08 19:28     ` Dave Chinner
2016-02-08  4:24 ` [PATCH 2/9] xfs: remove timestamps from incore inode Dave Chinner
2016-02-08  9:28   ` Christoph Hellwig
2016-02-08  4:24 ` [PATCH 3/9] xfs: cull unnecessary icdinode fields Dave Chinner
2016-02-08  9:29   ` Christoph Hellwig
2016-02-08 15:29   ` Brian Foster
2016-02-08  4:24 ` [PATCH 4/9] xfs: move v1 inode conversion to xfs_inode_from_disk Dave Chinner
2016-02-08  9:31   ` Christoph Hellwig
2016-02-08 19:44     ` Dave Chinner
2016-02-08  4:24 ` [PATCH 5/9] xfs: reinitialise recycled VFS inode correctly Dave Chinner
2016-02-08  9:33   ` Christoph Hellwig
2016-02-08 15:29   ` Brian Foster
2016-02-08  4:24 ` [PATCH 6/9] xfs: use vfs inode nlink field everywhere Dave Chinner
2016-02-08  9:40   ` Christoph Hellwig
2016-02-08 19:47     ` Dave Chinner
2016-02-08 15:29   ` Brian Foster
2016-02-08  4:24 ` [PATCH 7/9] xfs: move inode generation count to VFS inode Dave Chinner
2016-02-08  9:40   ` Christoph Hellwig
2016-02-08 15:29   ` Brian Foster
2016-02-08  4:24 ` Dave Chinner [this message]
2016-02-08  9:41   ` [PATCH 8/9] xfs: move di_changecount " Christoph Hellwig
2016-02-08  4:24 ` [PATCH 9/9] xfs: mode di_mode to vfs inode Dave Chinner
2016-02-08  9:42   ` Christoph Hellwig
2016-02-08 19:50     ` Dave Chinner
2016-02-08 15:29   ` Brian Foster

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