From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: io_pgetevents & aio fsync V4 Date: Wed, 2 May 2018 23:14:41 +0200 Message-ID: <20180502211448.18276-1-hch@lst.de> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: viro@zeniv.linux.org.uk Cc: Avi Kivity , linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-api@vger.kernel.org Hi all, this patch adds workqueue based fsync offload. Version of this patch have been floating around for a couple years, but we now have a user with seastar used by ScyllaDB (who sponsored this work) that really wants this in addition to the aio poll support. More details are in the patch itself. Because the iocb types have been defined sine day one (and probably were supported by RHEL3) libaio already supports these calls as-is. This also pulls in the aio cleanups and io_pgetevents support previously submitted and review as part of the aio poll series. The aio poll series will be resubmitted on top of this series A git tree is available here: git://git.infradead.org/users/hch/vfs.git aio-fsync.4 Gitweb: http://git.infradead.org/users/hch/vfs.git/shortlog/refs/heads/aio-fsync.4 Changes since V3: - rebased on top of 4.17-rc3 - improved/added a few comments Changes since V2: - don't introduce a use after free for lockdep sb release tracking - set up list for cancellation before I/O submission Changes since V1: - remove a BUG_ON_ONE(is_sync_kiocb(kiocb)); - moved cancellation patches to the poll series - improve a list_empty check