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Patch series "ocfs2: add nowait aio support", v4. VFS layer has introduced the non-blocking aio flag IOCB_NOWAIT, which tells the kernel to bail out if an AIO request will block for reasons such as file allocations, or writeback triggering, or would block while allocating requests while performing direct I/O. Subsequently, pwritev2/preadv2 also can leverage this part of kernel code. So far, ext4/xfs/btrfs have supported this feature. Add the related code for the ocfs2 file system. This patch (of 3): Add ocfs2_try_rw_lock and ocfs2_try_inode_lock functions, which will be used in non-blocking IO scenarios. [ghe@suse.com: v2] Link: http://lkml.kernel.org/r/1511944612-9629-2-git-send-email-ghe@suse.com Link: http://lkml.kernel.org/r/1511775987-841-2-git-send-email-ghe@suse.com Signed-off-by: Gang He <ghe@suse.com> Reviewed-by: Jun Piao <piaojun@huawei.com> Acked-by: alex chen <alex.chen@huawei.com> Cc: Mark Fasheh <mfasheh@versity.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joseph Qi <jiangqi903@gmail.com> Cc: Changwei Ge <ge.changwei@h3c.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.