xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nfsd: Ensure CLONE persists data and metadata changes to the target file

Browse Source 
The NFSv4.2 CLONE operation has implicit persistence requirements on the
target file, since there is no protocol requirement that the client issue
a separate operation to persist data.
For that reason, we should call vfs_fsync_range() on the destination file
after a successful call to vfs_clone_file_range().

Fixes: ffa0160a10 ("nfsd: implement the NFSv4.2 CLONE operation")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v4.5+
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Trond Myklebust
2019-11-27 17:05:51 -05:00
committed by J. Bruce Fields
parent 8729aaba74
commit a25e3726b3
3 changed files with 10 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
fs/nfsd/nfs4proc.c
View File

@@ -1077,7 +1077,8 @@ nfsd4_clone(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
goto out;
status = nfsd4_clone_file_range(src->nf_file, clone->cl_src_pos,
dst->nf_file, clone->cl_dst_pos, clone->cl_count);
dst->nf_file, clone->cl_dst_pos, clone->cl_count,
EX_ISSYNC(cstate->current_fh.fh_export));
nfsd_file_put(dst);
nfsd_file_put(src);