push BKL down into ->put_super

Move BKL into ->put_super from the only caller.  A couple of
filesystems had trivial enough ->put_super (only kfree and NULLing of
s_fs_info + stuff in there) to not get any locking: coda, cramfs, efs,
hugetlbfs, omfs, qnx4, shmem, all others got the full treatment.  Most
of them probably don't need it, but I'd rather sort that out individually.
Preferably after all the other BKL pushdowns in that area.

[AV: original used to move lock_super() down as well; these changes are
removed since we don't do lock_super() at all in generic_shutdown_super()
now]
[AV: fuse, btrfs and xfs are known to need no damn BKL, exempt]

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Christoph Hellwig 2009-05-05 15:40:36 +02:00 • committed by Al Viro
commit 6cfd014842
33 changed files with 133 additions and 12 deletions

View file

@ -183,6 +183,9 @@ static void jfs_put_super(struct super_block *sb)
int rc;
jfs_info("In jfs_put_super");
lock_kernel();
rc = jfs_umount(sb);
if (rc)
jfs_err("jfs_umount failed with return code %d", rc);
@ -195,6 +198,8 @@ static void jfs_put_super(struct super_block *sb)
sbi->direct_inode = NULL;
kfree(sbi);
unlock_kernel();
}
enum {