git.baikalelectronics.ru Git - kernel.git/commit

]> git.baikalelectronics.ru Git - kernel.git/commit

author	Jens Axboe <axboe@kernel.dk>
	Wed, 27 Feb 2019 20:13:23 +0000 (13:13 -0700)
committer	Jens Axboe <axboe@kernel.dk>
	Mon, 18 Mar 2019 16:44:48 +0000 (10:44 -0600)
commit	639cc877fce0e41959e11d9feb25ff7b7a65dcd8
tree	319206f280d9b57c45dfa2a42e869b25270611f4	tree \| snapshot
parent	c51708abd253156f2d41e00f0e90505a19bd2619	commit \| diff

block: add BIO_NO_PAGE_REF flag

If bio_iov_iter_get_pages() is called on an iov_iter that is flagged
with NO_REF, then we don't need to add a page reference for the pages
that we add.

Add BIO_NO_PAGE_REF to track this in the bio, so IO completion knows
not to drop a reference to these pages.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

block/bio.c		diff \| blob \| history
fs/block_dev.c		diff \| blob \| history
fs/iomap.c		diff \| blob \| history
include/linux/blk_types.h		diff \| blob \| history

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