From: Vasily Averin <vvs@virtuozzo.com>
To: linux-ext4@vger.kernel.org, Theodore Ts'o <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>,
linux-kernel@vger.kernel.org,
Yongqiang Yang <xiaoqiangnk@gmail.com>,
Yongqiang Yang <yangyongqiang01@baidu.com>
Subject: [PATCH v2 03/11] ext4 resize: brelse() cleanup in add_new_gdb_meta_bg()
Date: Wed, 31 Oct 2018 00:57:55 +0300 [thread overview]
Message-ID: <34d94824-834c-fb72-2f93-01e9036e9b38@virtuozzo.com> (raw)
In-Reply-To: <cover.1540935522.git.vvs@virtuozzo.com>
gdb_bh must be released in case of errors before update of s_group_desc
but it must not be released after update of group descriptors
because in this case bh can be used later.
Fixes 01f795f9e0d6 ("ext4: add online resizing support for meta_bg ...") # 3.7
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
---
fs/ext4/resize.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 0a4dc6217e78..7131f35b62d9 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -922,6 +922,7 @@ static int add_new_gdb_meta_bg(struct super_block *sb,
sizeof(struct buffer_head *),
GFP_NOFS);
if (!n_group_desc) {
+ brelse(gdb_bh);
err = -ENOMEM;
ext4_warning(sb, "not enough memory for %lu groups",
gdb_num + 1);
@@ -937,8 +938,6 @@ static int add_new_gdb_meta_bg(struct super_block *sb,
kvfree(o_group_desc);
BUFFER_TRACE(gdb_bh, "get_write_access");
err = ext4_journal_get_write_access(handle, gdb_bh);
- if (unlikely(err))
- brelse(gdb_bh);
return err;
}
--
2.17.1
next prev parent reply other threads:[~2018-10-30 21:58 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1540935522.git.vvs@virtuozzo.com>
2018-10-30 21:57 ` [PATCH v2 01/11] ext4 resise: extra brelse in setup_new_flex_group_blocks() Vasily Averin
2018-11-03 20:20 ` Theodore Y. Ts'o
2018-10-30 21:57 ` [PATCH v2 02/11] ext4 resize: missing brelse() after errors in set_flexbg_block_bitmap() Vasily Averin
2018-11-03 20:28 ` Theodore Y. Ts'o
2018-10-30 21:57 ` Vasily Averin [this message]
2018-11-03 20:55 ` [PATCH v2 03/11] ext4 resize: brelse() cleanup in add_new_gdb_meta_bg() Theodore Y. Ts'o
2018-10-30 21:58 ` [PATCH v2 04/11] ext4 resize: lost brelse() in update_backups() Vasily Averin
2018-11-03 21:14 ` Theodore Y. Ts'o
2018-10-30 21:58 ` [PATCH v2 05/11] ext4 resize: lost rollback in ext4_resize_fs() Vasily Averin
2018-11-06 21:17 ` Theodore Y. Ts'o
2018-10-30 21:58 ` [PATCH v2 06/11] ext4 resize: lost resize_inode cleanup before retry " Vasily Averin
2018-11-06 21:23 ` Theodore Y. Ts'o
2018-10-30 21:58 ` [PATCH v2 07/11] ext4: lost put_bh in ext4_mark_iloc_dirty() Vasily Averin
2018-11-06 21:53 ` Theodore Y. Ts'o
2018-10-30 21:58 ` [PATCH v2 08/11] ext4: lost brelse in ext4_orphan_add() Vasily Averin
2018-11-06 22:04 ` Theodore Y. Ts'o
2018-10-30 21:58 ` [PATCH v2 09/11] ext4: iloc.bh cleanup in add_new_gdb() Vasily Averin
2018-11-06 22:19 ` Theodore Y. Ts'o
2018-10-30 21:58 ` [PATCH v2 10/11] ext4: remove useless brelse call in ext4_xattr_inode_update_ref() Vasily Averin
2018-11-06 22:49 ` Theodore Y. Ts'o
2018-10-30 21:58 ` [PATCH v2 11/11] ext4: access to uninitialized bh fields in ext4_xattr_set_handle() Vasily Averin
[not found] ` <48BA929C-9BF7-4092-BDD3-BECB64AF0599@dilger.ca>
2018-10-31 3:39 ` Vasily Averin
2018-11-01 0:42 ` Andreas Dilger
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