From: Eric Biggers <ebiggers@kernel.org>
To: Theodore Ts'o <tytso@mit.edu>
Cc: Ext4 Developers List <linux-ext4@vger.kernel.org>
Subject: Re: [PATCH] ext4, jbd2: add an optimized bmap for the journal inode
Date: Tue, 7 Mar 2023 20:56:26 -0800 [thread overview]
Message-ID: <ZAgVej4bnMLfHKpf@sol.localdomain> (raw)
In-Reply-To: <20230308041615.2121699-1-tytso@mit.edu>
On Tue, Mar 07, 2023 at 11:16:15PM -0500, Theodore Ts'o wrote:
> The generic bmap() function exported by the VFS takes locks and does
> checks that are not necessary for the journal inode. So allow the
> file system to set a journal-optimized bmap function in
> journal->j_bmap.
>
> The also has the benefit of avoiding some false positives by DEPT.
>
> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
> ---
> fs/ext4/super.c | 23 +++++++++++++++++++++++
> fs/jbd2/journal.c | 9 ++++++---
> include/linux/jbd2.h | 8 ++++++++
> 3 files changed, 37 insertions(+), 3 deletions(-)
>
Should this also be marked as a fix for the syzbot report
https://syzkaller.appspot.com/bug?id=e4aaa78795e490421c79f76ec3679006c8ff4cf0 ?
- Eric
prev parent reply other threads:[~2023-03-08 4:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-08 4:16 [PATCH] ext4, jbd2: add an optimized bmap for the journal inode Theodore Ts'o
2023-03-08 4:56 ` Eric Biggers [this message]
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