[PATCH 3/5] xfs: set prealloc flag in xfs_alloc_file_space()

Dave Chinner
2022-01-31T06:43:57Z

Now that we only call xfs_update_prealloc_flags() from
xfs_file_fallocate() in the case where we need to set the
preallocation flag, do this in xfs_alloc_file_space() where we
already have the inode joined into a transaction and get
rid of the call to xfs_update_prealloc_flags() from the fallocate
code.

This also means that we now correctly avoid setting the
XFS_DIFLAG_PREALLOC flag when xfs_is_always_cow_inode() is true, as
these inodes will never have preallocated extents.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
---
fs/xfs/xfs_bmap_util.c | 3 +++
fs/xfs/xfs_file.c | 8 --------
2 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index d4a387d3d0ce..44fd91deeca8 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -869,6 +869,9 @@ xfs_alloc_file_space(
if (error)
goto error;

+ ip->i_diflags |= XFS_DIFLAG_PREALLOC;
+ xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+
/*
* Complete the transaction
*/
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 223996822d84..ae6f5b15a023 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -908,7 +908,6 @@ xfs_file_fallocate(
struct inode *inode = file_inode(file);
struct xfs_inode *ip = XFS_I(inode);
long error;
- enum xfs_prealloc_flags flags = 0;
uint iolock = XFS_IOLOCK_EXCL | XFS_MMAPLOCK_EXCL;
loff_t new_size = 0;
bool do_file_insert = false;
@@ -1006,8 +1005,6 @@ xfs_file_fallocate(
}
do_file_insert = true;
} else {
- flags |= XFS_PREALLOC_SET;
-
if (!(mode & FALLOC_FL_KEEP_SIZE) &&
offset + len > i_size_read(inode)) {
new_size = offset + len;
@@ -1057,11 +1054,6 @@ xfs_file_fallocate(
if (error)
goto out_unlock;
}
-
- error = xfs_update_prealloc_flags(ip, XFS_PREALLOC_SET);
- if (error)
- goto out_unlock;
-
}

/* Change file size if needed */
--
2.33.0