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push BKL down into ->put_super

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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 <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig
2009-05-05 15:40:36 +02:00
committed by Al Viro
parent a9e220f832
commit 6cfd014842
33 changed files with 133 additions and 12 deletions
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5
fs/hfsplus/super.c
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@ -199,6 +199,9 @@ static void hfsplus_put_super(struct super_block *sb)
dprint(DBG_SUPER, "hfsplus_put_super\n");
if (!sb->s_fs_info)
return;
lock_kernel();
if (sb->s_dirt)
hfsplus_write_super(sb);
if (!(sb->s_flags & MS_RDONLY) && HFSPLUS_SB(sb).s_vhdr) {
@ -220,6 +223,8 @@ static void hfsplus_put_super(struct super_block *sb)
unload_nls(HFSPLUS_SB(sb).nls);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
unlock_kernel();
}
static int hfsplus_statfs(struct dentry *dentry, struct kstatfs *buf)