From: Namhyung Kim <namhyung@gmail.com>
To: Theodore Ts'o <tytso@mit.edu>, Andreas Dilger <adilger.kernel@dilger.ca>
Cc: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] ext4: Add error check in ext4_mkdir()
Date: Tue, 16 Nov 2010 20:19:52 +0900 [thread overview]
Message-ID: <1289906392-8964-1-git-send-email-namhyung@gmail.com> (raw)
In-Reply-To: <1289906292-8906-1-git-send-email-namhyung@gmail.com>
Check return value of ext4_journal_get_write_access, ext4_journal_dirty_metadata
and ext4_mark_inode_dirty. Move brelse() under 'out_stop' to release bh properly
in case of journal error.
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
---
fs/ext4/namei.c | 21 ++++++++++++++-------
1 files changed, 14 insertions(+), 7 deletions(-)
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 92203b8..a09fbbd 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1789,7 +1789,7 @@ static int ext4_mkdir(struct inode *dir, struct dentry *dentry, int mode)
{
handle_t *handle;
struct inode *inode;
- struct buffer_head *dir_block;
+ struct buffer_head *dir_block = NULL;
struct ext4_dir_entry_2 *de;
unsigned int blocksize = dir->i_sb->s_blocksize;
int err, retries = 0;
@@ -1822,7 +1822,9 @@ retry:
if (!dir_block)
goto out_clear_inode;
BUFFER_TRACE(dir_block, "get_write_access");
- ext4_journal_get_write_access(handle, dir_block);
+ err = ext4_journal_get_write_access(handle, dir_block);
+ if (err)
+ goto out_clear_inode;
de = (struct ext4_dir_entry_2 *) dir_block->b_data;
de->inode = cpu_to_le32(inode->i_ino);
de->name_len = 1;
@@ -1839,10 +1841,12 @@ retry:
ext4_set_de_type(dir->i_sb, de, S_IFDIR);
inode->i_nlink = 2;
BUFFER_TRACE(dir_block, "call ext4_handle_dirty_metadata");
- ext4_handle_dirty_metadata(handle, dir, dir_block);
- brelse(dir_block);
- ext4_mark_inode_dirty(handle, inode);
- err = ext4_add_entry(handle, dentry, inode);
+ err = ext4_handle_dirty_metadata(handle, dir, dir_block);
+ if (err)
+ goto out_clear_inode;
+ err = ext4_mark_inode_dirty(handle, inode);
+ if (!err)
+ err = ext4_add_entry(handle, dentry, inode);
if (err) {
out_clear_inode:
clear_nlink(inode);
@@ -1853,10 +1857,13 @@ out_clear_inode:
}
ext4_inc_count(handle, dir);
ext4_update_dx_flag(dir);
- ext4_mark_inode_dirty(handle, dir);
+ err = ext4_mark_inode_dirty(handle, dir);
+ if (err)
+ goto out_clear_inode;
d_instantiate(dentry, inode);
unlock_new_inode(inode);
out_stop:
+ brelse(dir_block);
ext4_journal_stop(handle);
if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))
goto retry;
--
1.7.0.4
next prev parent reply other threads:[~2010-11-16 11:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-16 11:18 [PATCH 1/2] ext3: Add error check in ext3_mkdir() Namhyung Kim
2010-11-16 11:19 ` Namhyung Kim [this message]
2010-12-30 13:30 ` [PATCH 2/2] ext4: Add error check in ext4_mkdir() Ted Ts'o
2010-11-16 13:28 ` [PATCH 1/2] ext3: Add error check in ext3_mkdir() Jan Kara
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