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authorChristoph Hellwig <hch@lst.de>2009-05-05 09:40:36 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2009-06-11 21:36:07 -0400
commit6cfd0148425e528b859b26e436b01f23f6926224 (patch)
tree60e3257053554ff198fe5825e6f12a00c3b4422a /fs/fat
parenta9e220f8322e2b0e0b8903fe00265461cffad3f0 (diff)
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/fat')
-rw-r--r--fs/fat/inode.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 4978621511bf..2b88c93af227 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -451,6 +451,8 @@ static void fat_put_super(struct super_block *sb)
451{ 451{
452 struct msdos_sb_info *sbi = MSDOS_SB(sb); 452 struct msdos_sb_info *sbi = MSDOS_SB(sb);
453 453
454 lock_kernel();
455
454 if (sb->s_dirt) 456 if (sb->s_dirt)
455 fat_write_super(sb); 457 fat_write_super(sb);
456 458
@@ -470,6 +472,8 @@ static void fat_put_super(struct super_block *sb)
470 472
471 sb->s_fs_info = NULL; 473 sb->s_fs_info = NULL;
472 kfree(sbi); 474 kfree(sbi);
475
476 unlock_kernel();
473} 477}
474 478
475static struct kmem_cache *fat_inode_cachep; 479static struct kmem_cache *fat_inode_cachep;