6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bernd Schubert bschubert@ddn.com
[ Upstream commit b359af8275a982a458e8df6c6beab1415be1f795 ]
generic_file_direct_write() also does this and has a large comment about.
Reproducer here is xfstest's generic/209, which is exactly to have competing DIO write and cached IO read.
Signed-off-by: Bernd Schubert bschubert@ddn.com Signed-off-by: Miklos Szeredi mszeredi@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/fuse/file.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/fs/fuse/file.c b/fs/fuse/file.c index c5c82b380791..bb4ecfd469a5 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1681,6 +1681,15 @@ ssize_t fuse_direct_io(struct fuse_io_priv *io, struct iov_iter *iter, if (res > 0) *ppos = pos;
+ if (res > 0 && write && fopen_direct_io) { + /* + * As in generic_file_direct_write(), invalidate after the + * write, to invalidate read-ahead cache that may have competed + * with the write. + */ + invalidate_inode_pages2_range(mapping, idx_from, idx_to); + } + return res > 0 ? res : err; } EXPORT_SYMBOL_GPL(fuse_direct_io);