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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2016-10-31 20:59:24 +0300 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2016-11-30 05:02:03 +0300 |
| commit | 3816199506c7826983096fc65ed46f2733a47bb8 (patch) | |
| tree | b87375602661083358eaf2fa9fcb3a9ae8c653bc /kernel/locking/lockdep.c | |
| parent | e3df41f97847f60c3808b39dee1adcb72b3d4646 (diff) | |
| download | linux-3816199506c7826983096fc65ed46f2733a47bb8.tar.xz | |
block: add bio_iov_iter_get_pages()
This is a helper that pins down a range from an iov_iter and adds it to
a bio without requiring a separate memory allocation for the page array.
It will be used for upcoming direct I/O implementations for block devices
and iomap based file systems.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
[hch: ported to the iov_iter interface, renamed and added comments.
All blame should be directed to me and all fame should go to Kent
after this!]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
(cherry picked from commit 9cd56d916aa481ce8f56d9c5302a6ed90c2e0b5f)
Diffstat (limited to 'kernel/locking/lockdep.c')
0 files changed, 0 insertions, 0 deletions