From: Chris Mason <chris.mason@oracle.com>
Date: Thu, 3 Nov 2011 19:21:39 +0000 (-0400)
Subject: Btrfs: stop the readahead threads on failed mount
X-Git-Tag: v2.6.39-400.9.0~845^2~113
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=6302e43cf7d5de61eca7b9712a46bbe3a108c4e0;p=users%2Fjedix%2Flinux-maple.git

Btrfs: stop the readahead threads on failed mount

If we don't stop them, they linger around corrupting
memory by using pointers to freed things.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
(cherry picked from commit 306c8b68c82dfe6b7c9e5b61985760ad5d089205)
---

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 6d97b3e8b5526..4c63b166b5d30 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2219,6 +2219,7 @@ fail_chunk_root:
 	free_extent_buffer(chunk_root->commit_root);
 fail_sb_buffer:
 	btrfs_stop_workers(&fs_info->generic_worker);
+	btrfs_stop_workers(&fs_info->readahead_workers);
 	btrfs_stop_workers(&fs_info->fixup_workers);
 	btrfs_stop_workers(&fs_info->delalloc_workers);
 	btrfs_stop_workers(&fs_info->workers);