ext2: Add ext2_sb_info s_lock spinlock

[safe/jmp/linux-2.6] / fs / ext2 / xattr.c

diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index e44dc92..3b96045 100644 (file)
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -345,7 +345,9 @@ static void ext2_xattr_update_super_block(struct super_block *sb)
        if (EXT2_HAS_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR))
                return;
 
+       spin_lock(&EXT2_SB(sb)->s_lock);
        EXT2_SET_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR);
+       spin_unlock(&EXT2_SB(sb)->s_lock);
        sb->s_dirt = 1;
        mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
 }