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authorSteve French <smfrench@gmail.com>2017-09-22 09:40:27 +0300
committerSteve French <smfrench@gmail.com>2017-09-23 03:47:17 +0300
commit1013e760d10e614dc10b5624ce9fc41563ba2e65 (patch)
treec4c8189b7e4fb4b972c0f41af402fbb558d4ff14 /fs/cifs/file.c
parent6e70e26dc52be62c1f39f81b5f71fa5e643677aa (diff)
downloadlinux-1013e760d10e614dc10b5624ce9fc41563ba2e65.tar.xz
SMB3: Don't ignore O_SYNC/O_DSYNC and O_DIRECT flags
Signed-off-by: Steve French <smfrench@gmail.com> CC: Stable <stable@vger.kernel.org> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Diffstat (limited to 'fs/cifs/file.c')
-rw-r--r--fs/cifs/file.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 822311919163..92fdf9c35de2 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -224,6 +224,13 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
+ /* O_SYNC also has bit for O_DSYNC so following check picks up either */
+ if (f_flags & O_SYNC)
+ create_options |= CREATE_WRITE_THROUGH;
+
+ if (f_flags & O_DIRECT)
+ create_options |= CREATE_NO_BUFFER;
+
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = desired_access;