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authorChristoph Hellwig <hch@lst.de>2020-05-23 09:30:14 +0200
committerTheodore Ts'o <tytso@mit.edu>2020-06-03 23:16:55 -0400
commit45dd052e67ad17c7a24874a783f41aeab15bc294 (patch)
tree8babffcf81e916cbe3e5a21b7bace3a040c0e11d /fs/cifs
parentfs: move fiemap range validation into the file systems instances (diff)
downloadwireguard-linux-45dd052e67ad17c7a24874a783f41aeab15bc294.tar.xz
wireguard-linux-45dd052e67ad17c7a24874a783f41aeab15bc294.zip
fs: handle FIEMAP_FLAG_SYNC in fiemap_prep
By moving FIEMAP_FLAG_SYNC handling to fiemap_prep we ensure it is handled once instead of duplicated, but can still be done under fs locks, like xfs/iomap intended with its duplicate handling. Also make sure the error value of filemap_write_and_wait is propagated to user space. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Link: https://lore.kernel.org/r/20200523073016.2944131-8-hch@lst.de Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/smb2ops.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 828e53e795c6..300ade2acc41 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -3408,8 +3408,7 @@ static int smb3_fiemap(struct cifs_tcon *tcon,
int i, num, rc, flags, last_blob;
u64 next;
- rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len,
- FIEMAP_FLAG_SYNC);
+ rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, 0);
if (rc)
return rc;