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One of the goals is to reduce the overhead of using ->read_iter() and ->write_iter() instead of ->read()/->write(); new_sync_{read,write}() has a surprising amount of overhead, in particular inside iocb_flags(). That's why the beginning of the series is in this pile; it's not directly iov_iter-related, but it's a part of the same work... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQQqUNBr3gm4hGXdBJlZ7Krx/gZQ6wUCYurGOQAKCRBZ7Krx/gZQ 6ysyAP91lvBfMRepcxpd9kvtuzWkU8A3rfSziZZteEHANB9Q7QEAiPn2a2OjWkcZ uAyUWfCkHCNx+dSMkEvUgR5okQ0exAM= =9UCV -----END PGP SIGNATURE----- Merge tag 'pull-work.iov_iter-base' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs iov_iter updates from Al Viro: "Part 1 - isolated cleanups and optimizations. One of the goals is to reduce the overhead of using ->read_iter() and ->write_iter() instead of ->read()/->write(). new_sync_{read,write}() has a surprising amount of overhead, in particular inside iocb_flags(). That's the explanation for the beginning of the series is in this pile; it's not directly iov_iter-related, but it's a part of the same work..." * tag 'pull-work.iov_iter-base' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: first_iovec_segment(): just return address iov_iter: massage calling conventions for first_{iovec,bvec}_segment() iov_iter: first_{iovec,bvec}_segment() - simplify a bit iov_iter: lift dealing with maxpages out of first_{iovec,bvec}_segment() iov_iter_get_pages{,_alloc}(): cap the maxsize with MAX_RW_COUNT iov_iter_bvec_advance(): don't bother with bvec_iter copy_page_{to,from}_iter(): switch iovec variants to generic keep iocb_flags() result cached in struct file iocb: delay evaluation of IS_SYNC(...) until we want to check IOCB_DSYNC struct file: use anonymous union member for rcuhead and llist btrfs: use IOMAP_DIO_NOSYNC teach iomap_dio_rw() to suppress dsync No need of likely/unlikely on calls of check_copy_size() |
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.. | ||
advise.c | ||
advise.h | ||
alloc_cache.h | ||
cancel.c | ||
cancel.h | ||
epoll.c | ||
epoll.h | ||
fdinfo.c | ||
fdinfo.h | ||
filetable.c | ||
filetable.h | ||
fs.c | ||
fs.h | ||
io_uring.c | ||
io_uring.h | ||
io-wq.c | ||
io-wq.h | ||
kbuf.c | ||
kbuf.h | ||
Makefile | ||
msg_ring.c | ||
msg_ring.h | ||
net.c | ||
net.h | ||
nop.c | ||
nop.h | ||
notif.c | ||
notif.h | ||
opdef.c | ||
opdef.h | ||
openclose.c | ||
openclose.h | ||
poll.c | ||
poll.h | ||
refs.h | ||
rsrc.c | ||
rsrc.h | ||
rw.c | ||
rw.h | ||
slist.h | ||
splice.c | ||
splice.h | ||
sqpoll.c | ||
sqpoll.h | ||
statx.c | ||
statx.h | ||
sync.c | ||
sync.h | ||
tctx.c | ||
tctx.h | ||
timeout.c | ||
timeout.h | ||
uring_cmd.c | ||
uring_cmd.h | ||
xattr.c | ||
xattr.h |