[PATCH] hfs, hfsplus: don't leak s_fs_info and fix an oops
This patch fixes the leak of sb->s_fs_info in both the HFS and HFS+
modules. In addition to this, it fixes an oops happening when trying to
mount a non-hfsplus filesystem using hfsplus. This patch is from Roman
Zippel, based off patches sent by myself.
Signed-off-by: Colin Leroy <colin@colino.net>
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/hfs/mdb.c b/fs/hfs/mdb.c
index 4efb640..217e32f 100644
--- a/fs/hfs/mdb.c
+++ b/fs/hfs/mdb.c
@@ -333,6 +333,8 @@
* Release the resources associated with the in-core MDB. */
void hfs_mdb_put(struct super_block *sb)
{
+ if (!HFS_SB(sb))
+ return;
/* free the B-trees */
hfs_btree_close(HFS_SB(sb)->ext_tree);
hfs_btree_close(HFS_SB(sb)->cat_tree);
@@ -340,4 +342,7 @@
/* free the buffers holding the primary and alternate MDBs */
brelse(HFS_SB(sb)->mdb_bh);
brelse(HFS_SB(sb)->alt_mdb_bh);
+
+ kfree(HFS_SB(sb));
+ sb->s_fs_info = NULL;
}