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Commit 5b45d96b authored by Al Viro's avatar Al Viro
Browse files

fix the treatment of jfs special inodes 



We used to put them on a single list, without any locking.  Racy.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent d8e9650d

fs/jfs/jfs_imap.c

+7 −3
Original line number Diff line number Diff line
@@ -58,9 +58,9 @@ 


/*

 * __mark_inode_dirty expects inodes to be hashed.  Since we don't want

 * special inodes in the fileset inode space, we hash them to a dummy head

 * special inodes in the fileset inode space, we make them appear hashed,

 * but do not put on any lists.

 */

static HLIST_HEAD(aggregate_hash);



/*

 * imap locks
@@ -496,7 +496,11 @@ struct inode *diReadSpecial(struct super_block *sb, ino_t inum, int secondary) 
	/* release the page */

	release_metapage(mp);



	hlist_add_head(&ip->i_hash, &aggregate_hash);

	/*

	 * that will look hashed, but won't be on any list; hlist_del()

	 * will work fine and require no locking.

	 */

	ip->i_hash.pprev = &ip->i_hash.next;



	return (ip);

}