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2019-03-19Remove IOCQE_FLAG_CACHEHITJens Axboe
This cache hint has been removed from the io_uring series, as there's some hesitation to leak this information to userspace. Remove it from the header file and the man page. We can always re-introduce it later, if we get some variant of this included. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-14io_uring_enter.2: clarify min_completeJeff Moyer
min_complete means slightly different things depending on how the ring was setup. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-12man/io_uring_enter.2: clarify -EMFILE per-user caseJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-12man/io_uring_enter.2: add mention of -EMFILE for fixed file setsJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-10man/io_uring_enter: mention that SQE entries are always fully consumedJens Axboe
With a recent change to the kernel side, we now fully guarantee that once io_uring_enter(2) returns that X entries have been submitted, it's completely safe to reuse tohse entries. This used to not always be the case, if an SQE had to be punted to async context for submission. This makes for a more reliable and nicer interface. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-09man/io_uring_register: make note of huge page pinningJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-08remove sigsz from io_uring_enter.2Jeff Moyer
Users shouldn't be concerned with the size of the sigset. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-08Add sigmask parameter to io_uring_enterJeff Moyer
Update liburing and io_uring_enter.2 to match the kernel. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-08man/io_uring_register.2: add EMFILE errnoJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-05man/io_uring_setup: mention that IORING_SETUP_SQPOLL needs fixed filesJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-01-31man/io_uring_enter.2: we no longer EBUSY on mutex trylock failureJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-01-30man: add io_uring_setup.2 man pageJeff Moyer
Initial man page for io_uring_setup. Content was taken from the kernel commit logs and from an LWN article written by Jon Corbet. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-01-26man: fixup description of fixed files I/OJeff Moyer
The man page suggests that IOSQE_FIXED_FILE must be specified for all sqes when the io_uring instance has files registered. This is not the case, so clear that up. Also fix a typo (few->new) while we're in there. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-01-26man: io_uring_register: use a .TP list for flagsJeff Moyer
This seems to be the canonical way to do things. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-01-26man: alphabetize the error section for io_uring_registerJeff Moyer
This also includes a couple of whitespace cleanups. Most man pages don't leave spaces between directives. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-01-22io_uring_enter.2 man pageJeff Moyer
Initial man page for io_uring_enter. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-01-17man: add a man page for io_uring_registerJeff Moyer
Initial content was taken from the kernel commits (Jens Axboe). Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>