[PATCH 6/6] xfs: don't do delayed allocations for uncached buffered writes
From: Jens Axboe <axboe@kernel.dk>
Date: 2019-12-17 14:39:59
Also in:
linux-fsdevel, linux-mm
Subsystem:
filesystems (vfs and infrastructure), the rest, xfs filesystem · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds, Carlos Maiolino
This data is going to be written immediately, so don't bother trying to do delayed allocation for it. Suggested-by: Dave Chinner <david@fromorbit.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> --- fs/xfs/xfs_iomap.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 28e2d1f37267..d0cd4a05d59f 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c@@ -847,8 +847,11 @@ xfs_buffered_write_iomap_begin( int allocfork = XFS_DATA_FORK; int error = 0; - /* we can't use delayed allocations when using extent size hints */ - if (xfs_get_extsz_hint(ip)) + /* + * Don't do delayed allocations when using extent size hints, or + * if we were asked to do uncached buffered writes. + */ + if (xfs_get_extsz_hint(ip) || (flags & IOMAP_UNCACHED)) return xfs_direct_write_iomap_begin(inode, offset, count, flags, iomap, srcmap);
--
2.24.1