[PATCH 00/10] block: cleanup on direct access to bvec table(prepare for multipage bvec)

Ming Lei
2017-12-08T13:14:29Z

Hi,

This patchse cleans up most of direct access to bvec table in tree, and
these patches are the follow-up of patch1 ~ 16 in the patchset of 'block:
support multipage bvec(V3)'[1].

Changes against [1]:
1) split the cleanup patches from [1]
2) address comments from Christoph:
- introduce bio helpers for dealing with the cleanup
- move bio_alloc_pages() to bcache

[1] https://marc.info/?t=150218197600001&r=1&w=2

Thanks,
Ming

Ming Lei (10):
block: introduce bio helpers for converting to multipage bvec
block: conver to bio_first_bvec() & bio_first_page()
fs: convert to bio_last_bvec()
block: bounce: avoid direct access to bvec table
block: bounce: don't access bio->bi_io_vec in copy_to_high_bio_irq
dm: limit the max bio size as BIO_MAX_PAGES * PAGE_SIZE
bcache: comment on direct access to bvec table
block: move bio_alloc_pages() to bcache
btrfs: avoid access to .bi_vcnt directly
btrfs: avoid to access bvec table directly for a cloned bio

block/bio.c | 28 ----------------------------
block/bounce.c | 33 +++++++++++++++++++--------------
drivers/block/drbd/drbd_bitmap.c | 2 +-
drivers/block/zram/zram_drv.c | 2 +-
drivers/md/bcache/btree.c | 1 +
drivers/md/bcache/super.c | 8 ++++----
drivers/md/bcache/util.c | 34 ++++++++++++++++++++++++++++++++++
drivers/md/bcache/util.h | 1 +
drivers/md/dm.c | 10 +++++++++-
fs/btrfs/compression.c | 4 ++--
fs/btrfs/extent_io.c | 11 ++++++-----
fs/btrfs/extent_io.h | 2 +-
fs/btrfs/inode.c | 8 +++++---
fs/buffer.c | 2 +-
fs/f2fs/data.c | 2 +-
include/linux/bio.h | 25 ++++++++++++++++++++++++-
include/linux/bvec.h | 9 +++++++++
kernel/power/swap.c | 2 +-
mm/page_io.c | 4 ++--
19 files changed, 122 insertions(+), 66 deletions(-)

--
2.9.5