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

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From: Dave Chinner <dchinner@xxxxxxxxxx>

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@xxxxxxxxxx>
---
 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




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