linux-ext4 - Re: [PATCH 4/5] ext4 : Add missing posix_acl_release() in ext4_xattr_set

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Message-ID: <BANLkTimEOXs9yzws73kZ669YKLVhr6eAmw@mail.gmail.com>
Date:	Thu, 12 May 2011 19:19:29 -0700
From:	Manish Katiyar <mkatiyar@...il.com>
To:	Jan Kara <jack@...e.cz>
Cc:	ext4 <linux-ext4@...r.kernel.org>, mkatiyar@...il.com,
	"Theodore Ts'o" <tytso@....edu>
Subject: Re: [PATCH 4/5] ext4 : Add missing posix_acl_release() in
 ext4_xattr_set_acl() in error path.

On Wed, May 11, 2011 at 9:18 AM, Jan Kara <jack@...e.cz> wrote:
> On Sun 24-04-11 17:18:02, Manish Katiyar wrote:
>> This patch fixes the following.
>>
>> a) Incase journal transaction allocation fails due to ENOMEM don't call
>> ext4_std_error() since it will remount the fs as readonly and logs the
>> message in kernel log.
>> b) Call posix_acl_release() incase journal allocation fails in case of
>> error paths.
>>
>>
>> Signed-off-by: Manish Katiyar <mkatiyar@...il.com>
>> ---
>>  fs/ext4/acl.c |    7 ++++---
>>  1 files changed, 4 insertions(+), 3 deletions(-)
>>
>> diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
>> index 21eacd7..0c98710 100644
>> --- a/fs/ext4/acl.c
>> +++ b/fs/ext4/acl.c
>> @@ -354,7 +354,6 @@ ext4_acl_chmod(struct inode *inode)
>>                               EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
>>               if (IS_ERR(handle)) {
>>                       error = PTR_ERR(handle);
>> -                     ext4_std_error(inode->i_sb, error);
>  The changelog speaks only about ENOMEM but you actually remove the
> message completely (so it won't catch EIO or similar errors). I think you
> should just condition ext4_std_error() with if (error != ENOMEM).

Hi Jan,

Thanks for your response. Here is the updated patch.

---------------------------------------------------------------------------------------------------------------------
a) Incase journal transaction allocation fails due to ENOMEM don't call
ext4_std_error() since it will remount the fs as readonly and logs the
message in kernel log.

b) Call posix_acl_release() incase journal allocation fails in case
of error paths.

Signed-off-by: Manish Katiyar <mkatiyar@...il.com>
---
 fs/ext4/acl.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
index 21eacd7..93dc9a6 100644
--- a/fs/ext4/acl.c
+++ b/fs/ext4/acl.c
@@ -354,7 +354,8 @@ ext4_acl_chmod(struct inode *inode)
 				EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
 		if (IS_ERR(handle)) {
 			error = PTR_ERR(handle);
-			ext4_std_error(inode->i_sb, error);
+			if (error != -ENOMEM)
+				ext4_std_error(inode->i_sb, error);
 			goto out;
 		}
 		error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, clone);
@@ -450,8 +451,10 @@ ext4_xattr_set_acl(struct dentry *dentry, const
char *name, const void *value,

 retry:
 	handle = ext4_journal_start(inode, EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
-	if (IS_ERR(handle))
-		return PTR_ERR(handle);
+	if (IS_ERR(handle)) {
+		error = PTR_ERR(handle);
+		goto release_and_out;
+	}
 	error = ext4_set_acl(handle, inode, type, acl);
 	ext4_journal_stop(handle);
 	if (error == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
-- 
1.7.4.1


-- 
Thanks -
Manish
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