This is a note to let you know that I've just added the patch titled
NFSD: pass range end to vfs_fsync_range() instead of count
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nfsd-pass-range-end-to-vfs_fsync_range-instead-of-co.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4a4568ed89acd305c1db22e6184a9b79842da913
Author: Brian Foster <bfoster@xxxxxxxxxx>
Date: Wed Nov 16 10:28:36 2022 -0500
NFSD: pass range end to vfs_fsync_range() instead of count
[ Upstream commit 79a1d88a36f77374c77fd41a4386d8c2736b8704 ]
_nfsd_copy_file_range() calls vfs_fsync_range() with an offset and
count (bytes written), but the former wants the start and end bytes
of the range to sync. Fix it up.
Fixes: eac0b17a77fb ("NFSD add vfs_fsync after async copy is done")
Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
Tested-by: Dai Ngo <dai.ngo@xxxxxxxxxx>
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 86ab9b8ac2daf..cf558d951ec68 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1632,6 +1632,7 @@ static ssize_t _nfsd_copy_file_range(struct nfsd4_copy *copy,
u64 src_pos = copy->cp_src_pos;
u64 dst_pos = copy->cp_dst_pos;
int status;
+ loff_t end;
/* See RFC 7862 p.67: */
if (bytes_total == 0)
@@ -1651,8 +1652,8 @@ static ssize_t _nfsd_copy_file_range(struct nfsd4_copy *copy,
/* for a non-zero asynchronous copy do a commit of data */
if (nfsd4_copy_is_async(copy) && copy->cp_res.wr_bytes_written > 0) {
since = READ_ONCE(dst->f_wb_err);
- status = vfs_fsync_range(dst, copy->cp_dst_pos,
- copy->cp_res.wr_bytes_written, 0);
+ end = copy->cp_dst_pos + copy->cp_res.wr_bytes_written - 1;
+ status = vfs_fsync_range(dst, copy->cp_dst_pos, end, 0);
if (!status)
status = filemap_check_wb_err(dst->f_mapping, since);
if (!status)
