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authorMing Lei <tom.leiming@gmail.com>2017-03-16 19:12:34 +0300
committerShaohua Li <shli@fb.com>2017-03-24 20:41:37 +0300
commitcdb76be31568604f389f951bd0efadd3f530f2dd (patch)
tree81e873f2d1f7218eab606571812e3188027b1699 /drivers/md/raid10.c
parentf0250618361db1447d66c494c6dd2df815f42c87 (diff)
downloadlinux-cdb76be31568604f389f951bd0efadd3f530f2dd.tar.xz
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.c13
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);