diff options
| author |   Ming Lei <tom.leiming@gmail.com> | 2017-03-17 00:12:34 +0800 |
|---|---|---|
| committer |   Shaohua Li <shli@fb.com> | 2017-03-24 10:41:37 -0700 |
| commit | cdb76be31568604f389f951bd0efadd3f530f2dd (patch) | |
| tree | 81e873f2d1f7218eab606571812e3188027b1699 /drivers/md/raid10.c | |
| parent | md: raid10: don't use bio's vec table to manage resync pages (diff) | |
| download | linux-dev-cdb76be31568604f389f951bd0efadd3f530f2dd.tar.xz linux-dev-cdb76be31568604f389f951bd0efadd3f530f2dd.zip | |
md: raid10: retrieve page from preallocated resync page array
Now one page array is allocated for each resync bio, and we can
retrieve page from this table directly.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md/raid10.c')
| -rw-r--r-- | drivers/md/raid10.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 629ae45bb18e..827bb5bef53c 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -2055,6 +2055,7 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio) int i, first; struct bio *tbio, *fbio; int vcnt; + struct page **tpages, **fpages; atomic_set(&r10_bio->remaining, 1); @@ -2070,6 +2071,7 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio) fbio = r10_bio->devs[i].bio; fbio->bi_iter.bi_size = r10_bio->sectors << 9; fbio->bi_iter.bi_idx = 0; + fpages = get_resync_pages(fbio)->pages; vcnt = (r10_bio->sectors + (PAGE_SIZE >> 9) - 1) >> (PAGE_SHIFT - 9); /* now find blocks with errors */ @@ -2084,6 +2086,8 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio) continue; if (i == first) continue; + + tpages = get_resync_pages(tbio)->pages; d = r10_bio->devs[i].devnum; rdev = conf->mirrors[d].rdev; if (!r10_bio->devs[i].bio->bi_error) { @@ -2096,8 +2100,8 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio) int len = PAGE_SIZE; if (sectors < (len / 512)) len = sectors * 512; - if (memcmp(page_address(fbio->bi_io_vec[j].bv_page), - page_address(tbio->bi_io_vec[j].bv_page), + if (memcmp(page_address(fpages[j]), + page_address(tpages[j]), len)) break; sectors -= len/512; @@ -2195,6 +2199,7 @@ static void fix_recovery_read_error(struct r10bio *r10_bio) int idx = 0; int dr = r10_bio->devs[0].devnum; int dw = r10_bio->devs[1].devnum; + struct page **pages = get_resync_pages(bio)->pages; while (sectors) { int s = sectors; @@ -2210,7 +2215,7 @@ static void fix_recovery_read_error(struct r10bio *r10_bio) ok = sync_page_io(rdev, addr, s << 9, - bio->bi_io_vec[idx].bv_page, + pages[idx], REQ_OP_READ, 0, false); if (ok) { rdev = conf->mirrors[dw].rdev; @@ -2218,7 +2223,7 @@ static void fix_recovery_read_error(struct r10bio *r10_bio) ok = sync_page_io(rdev, addr, s << 9, - bio->bi_io_vec[idx].bv_page, + pages[idx], REQ_OP_WRITE, 0, false); if (!ok) { set_bit(WriteErrorSeen, &rdev->flags); |