From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Fri, 8 Dec 2006 10:36:18 +0000 (-0800)
Subject: [PATCH] bdev: fix ->bd_part_count leak
X-Git-Tag: v2.6.20-rc1~34^2~383
X-Git-Url: http://git.rot13.org/?a=commitdiff_plain;h=c48f70c3d046f021b1c22438604ef2a583380eca;hp=d63a5a74dee87883fda6b7d170244acaac5b05e8;p=powerpc.git

[PATCH] bdev: fix ->bd_part_count leak

Don't leak a ->bd_part_count when the partition open fails with -ENXIO.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 846f32d51b..f3c3a44dd8 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -902,6 +902,7 @@ EXPORT_SYMBOL(bd_set_size);
 
 static int __blkdev_get(struct block_device *bdev, mode_t mode, unsigned flags,
 			int for_part);
+static int __blkdev_put(struct block_device *bdev, int for_part);
 
 static int do_open(struct block_device *bdev, struct file *file, int for_part)
 {
@@ -987,7 +988,7 @@ out_first:
 	bdev->bd_disk = NULL;
 	bdev->bd_inode->i_data.backing_dev_info = &default_backing_dev_info;
 	if (bdev != bdev->bd_contains)
-		blkdev_put(bdev->bd_contains);
+		__blkdev_put(bdev->bd_contains, 1);
 	bdev->bd_contains = NULL;
 	put_disk(disk);
 	module_put(owner);