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authorAl Viro <viro@zeniv.linux.org.uk>2009-05-06 10:43:07 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2009-06-11 21:36:08 -0400
commitbbd6851a3213a525128473e978b692ab6ac11aba (patch)
tree8ebddebadd8992871ab98456187cb00849a82058 /fs/sysv
parent6cfd0148425e528b859b26e436b01f23f6926224 (diff)
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Push lock_super() into the ->remount_fs() of filesystems that care about it
Note that since we can't run into contention between remount_fs and write_super (due to exclusion on s_umount), we have to care only about filesystems that touch lock_super() on their own. Out of those ext3, ext4, hpfs, sysv and ufs do need it; fat doesn't since its ->remount_fs() only accesses assign-once data (basically, it's "we have no atime on directories and only have atime on files for vfat; force nodiratime and possibly noatime into *flags"). [folded a build fix from hch] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/sysv')
-rw-r--r--fs/sysv/inode.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c
index a818986..e0a39f1 100644
--- a/fs/sysv/inode.c
+++ b/fs/sysv/inode.c
@@ -61,10 +61,12 @@ clean:
static int sysv_remount(struct super_block *sb, int *flags, char *data)
{
struct sysv_sb_info *sbi = SYSV_SB(sb);
+ lock_super(sb);
if (sbi->s_forced_ro)
*flags |= MS_RDONLY;
if (!(*flags & MS_RDONLY))
sb->s_dirt = 1;
+ unlock_super(sb);
return 0;
}