lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Wed, 29 Nov 2017 16:36:49 +0800
From:   Gang He <ghe@...e.com>
To:     mfasheh@...sity.com, jlbec@...lplan.org, rgoldwyn@...e.com,
        hch@....de
Cc:     Gang He <ghe@...e.com>, linux-kernel@...r.kernel.org,
        ocfs2-devel@....oracle.com, akpm@...ux-foundation.org
Subject: [PATCH v2 0/3] ocfs2: add nowait aio support

As you know, VFS layer has introduced non-block aio
flag IOCB_NOWAIT, which informs kernel to bail out
if an AIO request will block for reasons such as file
allocations, or a writeback triggered, or would block
while allocating requests while performing direct I/O.
Subsequent, pwritev2/preadv2 also can leverage this
part kernel code.
So far, ext4/xfs/btrfs have supported this feature,
I'd like to add the related code for ocfs2 file system.

Compare with v1, some changes are as below,
use osb pointer in ocfs2_try_rw_lock() function,
modify ocfs2_overwrite_io() function to make all error
value can be returned to the upper code,
move invoking ocfs2_overwrite_io() function from
ocfs2_file_write_iter() to ocfs2_prepare_inode_for_write(),
this change can combine acquiring the related locks.


Gang He (3):
  ocfs2: add ocfs2_try_rw_lock and ocfs2_try_inode_lock
  ocfs2: add ocfs2_overwrite_io function
  ocfs2: nowait aio support

 fs/ocfs2/dir.c         |  2 +-
 fs/ocfs2/dlmglue.c     | 41 +++++++++++++++++++---
 fs/ocfs2/dlmglue.h     |  6 +++-
 fs/ocfs2/extent_map.c  | 41 ++++++++++++++++++++++
 fs/ocfs2/extent_map.h  |  3 ++
 fs/ocfs2/file.c        | 95 +++++++++++++++++++++++++++++++++++++++-----------
 fs/ocfs2/mmap.c        |  2 +-
 fs/ocfs2/ocfs2_trace.h | 10 +++---
 8 files changed, 168 insertions(+), 32 deletions(-)

-- 
1.8.5.6

Powered by blists - more mailing lists