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| author | Ronnie Sahlberg <lsahlber@redhat.com> | 2022-09-12 06:04:46 +0300 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2022-09-12 21:24:08 +0300 |
| commit | 7500a99281dfed2d4a84771c933bcb9e17af279b (patch) | |
| tree | 5e3b83a20f65689d97e3bf2d2867ab0631767a35 | |
| parent | 80e78fcce86de0288793a0ef0f6acf37656ee4cf (diff) | |
| download | linux-7500a99281dfed2d4a84771c933bcb9e17af279b.tar.xz | |
cifs: revalidate mapping when doing direct writes
Kernel bugzilla: 216301
When doing direct writes we need to also invalidate the mapping in case
we have a cached copy of the affected page(s) in memory or else
subsequent reads of the data might return the old/stale content
before we wrote an update to the server.
Cc: stable@vger.kernel.org
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
| -rw-r--r-- | fs/cifs/file.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index fa738adc031f..6f38b134a346 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -3575,6 +3575,9 @@ static ssize_t __cifs_writev( ssize_t cifs_direct_writev(struct kiocb *iocb, struct iov_iter *from) { + struct file *file = iocb->ki_filp; + + cifs_revalidate_mapping(file->f_inode); return __cifs_writev(iocb, from, true); } |