diff options
| author | Paulo Alcantara (SUSE) <paulo@paulo.ac> | 2019-06-18 16:16:02 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-26 09:10:51 +0200 |
| commit | b14228f7e98e2638ced1207a324dcfccba624a78 (patch) | |
| tree | 326c958ce79fefe776b5bbd3c1c830d65b2a3f6a /fs | |
| parent | 98c3db87aae1903f196dee195506150f0ab7edb0 (diff) | |
cifs: Properly handle auto disabling of serverino option
commit 29fbeb7a908a60a5ae8c50fbe171cb8fdcef1980 upstream.
Fix mount options comparison when serverino option is turned off later
in cifs_autodisable_serverino() and thus avoiding mismatch of new cifs
mounts.
Cc: stable@vger.kernel.org
Signed-off-by: Paulo Alcantara (SUSE) <paulo@paulo.ac>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilove@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/cifs_fs_sb.h | 5 | ||||
| -rw-r--r-- | fs/cifs/connect.c | 8 | ||||
| -rw-r--r-- | fs/cifs/misc.c | 1 |
3 files changed, 12 insertions, 2 deletions
diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h index ed49222abecb..afa56237a0c3 100644 --- a/fs/cifs/cifs_fs_sb.h +++ b/fs/cifs/cifs_fs_sb.h @@ -83,5 +83,10 @@ struct cifs_sb_info { * failover properly. */ char *origin_fullpath; /* \\HOST\SHARE\[OPTIONAL PATH] */ + /* + * Indicate whether serverino option was turned off later + * (cifs_autodisable_serverino) in order to match new mounts. + */ + bool mnt_cifs_serverino_autodisabled; }; #endif /* _CIFS_FS_SB_H */ diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 6e7762518a2d..59380dd546a1 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -3460,12 +3460,16 @@ compare_mount_options(struct super_block *sb, struct cifs_mnt_data *mnt_data) { struct cifs_sb_info *old = CIFS_SB(sb); struct cifs_sb_info *new = mnt_data->cifs_sb; + unsigned int oldflags = old->mnt_cifs_flags & CIFS_MOUNT_MASK; + unsigned int newflags = new->mnt_cifs_flags & CIFS_MOUNT_MASK; if ((sb->s_flags & CIFS_MS_MASK) != (mnt_data->flags & CIFS_MS_MASK)) return 0; - if ((old->mnt_cifs_flags & CIFS_MOUNT_MASK) != - (new->mnt_cifs_flags & CIFS_MOUNT_MASK)) + if (old->mnt_cifs_serverino_autodisabled) + newflags &= ~CIFS_MOUNT_SERVER_INUM; + + if (oldflags != newflags) return 0; /* diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index b1a696a73f7c..f383877a6511 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -539,6 +539,7 @@ cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb) tcon = cifs_sb_master_tcon(cifs_sb); cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SERVER_INUM; + cifs_sb->mnt_cifs_serverino_autodisabled = true; cifs_dbg(VFS, "Autodisabling the use of server inode numbers on %s.\n", tcon ? tcon->treeName : "new server"); cifs_dbg(VFS, "The server doesn't seem to support them properly or the files might be on different servers (DFS).\n"); |