Fix remount races with symlink handling in affs

A couple of fields in affs_sb_info is used in follow_link() and
symlink() for handling AFFS "absolute" symlinks.  Need locking
against affs_remount() updates.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index e511dc621a2e..0e40caaba456 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -106,8 +106,8 @@ struct affs_sb_info {
         u32 s_last_bmap;
         struct buffer_head *s_bmap_bh;
         char *s_prefix;                 /* Prefix for volumes and assigns. */
-        int s_prefix_len;               /* Length of prefix. */
         char s_volume[32];              /* Volume prefix for absolute symlinks. */
+        spinlock_t symlink_lock;        /* protects the previous two */
 };
 
 #define SF_INTL         0x0001          /* International filesystem. */