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authorChristoph Hellwig <hch@lst.de>2009-05-05 15:40:36 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2009-06-11 21:36:07 -0400
commit6cfd0148425e528b859b26e436b01f23f6926224 (patch)
tree60e3257053554ff198fe5825e6f12a00c3b4422a /fs/squashfs/super.c
parenta9e220f8322e2b0e0b8903fe00265461cffad3f0 (diff)
downloadop-kernel-dev-6cfd0148425e528b859b26e436b01f23f6926224.zip
op-kernel-dev-6cfd0148425e528b859b26e436b01f23f6926224.tar.gz
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 <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/squashfs/super.c')
-rw-r--r--fs/squashfs/super.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c
index 0adc624..3b52770 100644
--- a/fs/squashfs/super.c
+++ b/fs/squashfs/super.c
@@ -338,6 +338,8 @@ static int squashfs_remount(struct super_block *sb, int *flags, char *data)
static void squashfs_put_super(struct super_block *sb)
{
+ lock_kernel();
+
if (sb->s_fs_info) {
struct squashfs_sb_info *sbi = sb->s_fs_info;
squashfs_cache_delete(sbi->block_cache);
@@ -350,6 +352,8 @@ static void squashfs_put_super(struct super_block *sb)
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
}
+
+ unlock_kernel();
}
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