On Wed, Mar 28, 2018 at 09:26:33AM +0200, Christoph Hellwig wrote: > 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 BTW, this is only tangentially related, but... does *anything* call io_submit() for huge amounts of iocb? Check in do_io_submit() is insane - "no more than MAX_LONG total of _pointers_". Compat variant goes for "no more than a page worth of pointers" and there's a hard limit in ioctx_alloc() - we can't ever get more than 8M slots in ring buffer... -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
