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Date: Sat, 23 Apr 2016 18:05:09 -0500
From: Shaun Tancheff <shaun@...cheff.com>
To: mchristi@...hat.com, linux-f2fs-devel@...ts.sourceforge.net,
linux-ext4@...r.kernel.org, konrad.wilk@...cle.com,
drbd-dev@...ts.linbit.com, philipp.reisner@...bit.com,
lars.ellenberg@...bit.com, linux-raid@...r.kernel.org,
dm-devel@...hat.com, linux-fsdevel@...r.kernel.org,
linux-bcache@...r.kernel.org, linux-block@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
linux-mtd@...ts.infradead.org, target-devel@...r.kernel.org,
linux-btrfs@...r.kernel.org, osd-dev@...n-osd.org, xfs@....sgi.com,
ocfs2-devel@....oracle.com
Cc: Shaun Tancheff <shaun@...cheff.com>,
Shaun Tancheff <shaun.tancheff@...gate.com>
Subject: [PATCH] RAID Cleanup for bio-split
It looks like some minor changes slipped through on the RAID.
A couple of checks for REQ_PREFLUSH flag should also check for
bi_op matching REQ_OP_FLUSH.
Wrappers for sync_page_io() are passed READ/WRITE but need to
be passed REQ_OP_READ and REQ_OP_WRITE.
Signed-off-by: Shaun Tancheff <shaun.tancheff@...gate.com>
---
drivers/md/raid0.c | 3 ++-
drivers/md/raid1.c | 13 +++++++------
drivers/md/raid10.c | 21 ++++++++++-----------
drivers/md/raid5.c | 3 ++-
4 files changed, 21 insertions(+), 19 deletions(-)
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index f95463d..46e9ba8 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -458,7 +458,8 @@ static void raid0_make_request(struct mddev *mddev, struct bio *bio)
struct md_rdev *tmp_dev;
struct bio *split;
- if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH) ||
+ unlikely(bio->bi_op == REQ_OP_FLUSH)) {
md_flush_request(mddev, bio);
return;
}
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 2a2c177..f7c0577 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1771,12 +1771,12 @@ static void end_sync_write(struct bio *bio)
}
static int r1_sync_page_io(struct md_rdev *rdev, sector_t sector,
- int sectors, struct page *page, int rw)
+ int sectors, struct page *page, int op)
{
- if (sync_page_io(rdev, sector, sectors << 9, page, rw, 0, false))
+ if (sync_page_io(rdev, sector, sectors << 9, page, op, 0, false))
/* success */
return 1;
- if (rw == WRITE) {
+ if (op == REQ_OP_WRITE) {
set_bit(WriteErrorSeen, &rdev->flags);
if (!test_and_set_bit(WantReplacement,
&rdev->flags))
@@ -1883,7 +1883,7 @@ static int fix_sync_read_error(struct r1bio *r1_bio)
rdev = conf->mirrors[d].rdev;
if (r1_sync_page_io(rdev, sect, s,
bio->bi_io_vec[idx].bv_page,
- WRITE) == 0) {
+ REQ_OP_WRITE) == 0) {
r1_bio->bios[d]->bi_end_io = NULL;
rdev_dec_pending(rdev, mddev);
}
@@ -2118,7 +2118,7 @@ static void fix_read_error(struct r1conf *conf, int read_disk,
if (rdev &&
!test_bit(Faulty, &rdev->flags))
r1_sync_page_io(rdev, sect, s,
- conf->tmppage, WRITE);
+ conf->tmppage, REQ_OP_WRITE);
}
d = start;
while (d != read_disk) {
@@ -2130,7 +2130,7 @@ static void fix_read_error(struct r1conf *conf, int read_disk,
if (rdev &&
!test_bit(Faulty, &rdev->flags)) {
if (r1_sync_page_io(rdev, sect, s,
- conf->tmppage, READ)) {
+ conf->tmppage, REQ_OP_READ)) {
atomic_add(s, &rdev->corrected_errors);
printk(KERN_INFO
"md/raid1:%s: read error corrected "
@@ -2204,6 +2204,7 @@ static int narrow_write_error(struct r1bio *r1_bio, int i)
}
wbio->bi_op = REQ_OP_WRITE;
+ wbio->bi_rw = 0;
wbio->bi_iter.bi_sector = r1_bio->sector;
wbio->bi_iter.bi_size = r1_bio->sectors << 9;
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index c5dc4e4..44e87c2 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1364,8 +1364,7 @@ retry_write:
mbio->bi_bdev = rdev->bdev;
mbio->bi_end_io = raid10_end_write_request;
mbio->bi_op = op;
- mbio->bi_rw =
- do_sync | do_fua | do_sec;
+ mbio->bi_rw = do_sync | do_fua | do_sec;
mbio->bi_private = r10_bio;
atomic_inc(&r10_bio->remaining);
@@ -1408,8 +1407,7 @@ retry_write:
mbio->bi_bdev = rdev->bdev;
mbio->bi_end_io = raid10_end_write_request;
mbio->bi_op = op;
- mbio->bi_rw =
- do_sync | do_fua | do_sec;
+ mbio->bi_rw = do_sync | do_fua | do_sec;
mbio->bi_private = r10_bio;
atomic_inc(&r10_bio->remaining);
@@ -1452,7 +1450,8 @@ static void raid10_make_request(struct mddev *mddev, struct bio *bio)
struct bio *split;
- if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH) ||
+ unlikely(bio->bi_op == REQ_OP_FLUSH)) {
md_flush_request(mddev, bio);
return;
}
@@ -2207,18 +2206,18 @@ static void check_decay_read_errors(struct mddev *mddev, struct md_rdev *rdev)
}
static int r10_sync_page_io(struct md_rdev *rdev, sector_t sector,
- int sectors, struct page *page, int rw)
+ int sectors, struct page *page, int op)
{
sector_t first_bad;
int bad_sectors;
if (is_badblock(rdev, sector, sectors, &first_bad, &bad_sectors)
- && (rw == READ || test_bit(WriteErrorSeen, &rdev->flags)))
+ && (op == REQ_OP_READ || test_bit(WriteErrorSeen, &rdev->flags)))
return -1;
- if (sync_page_io(rdev, sector, sectors << 9, page, rw, 0, false))
+ if (sync_page_io(rdev, sector, sectors << 9, page, op, 0, false))
/* success */
return 1;
- if (rw == WRITE) {
+ if (op == REQ_OP_WRITE) {
set_bit(WriteErrorSeen, &rdev->flags);
if (!test_and_set_bit(WantReplacement, &rdev->flags))
set_bit(MD_RECOVERY_NEEDED,
@@ -2354,7 +2353,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
if (r10_sync_page_io(rdev,
r10_bio->devs[sl].addr +
sect,
- s, conf->tmppage, WRITE)
+ s, conf->tmppage, REQ_OP_WRITE)
== 0) {
/* Well, this device is dead */
printk(KERN_NOTICE
@@ -2394,7 +2393,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
r10_bio->devs[sl].addr +
sect,
s, conf->tmppage,
- READ)) {
+ REQ_OP_READ)) {
case 0:
/* Well, this device is dead */
printk(KERN_NOTICE
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 8504862..3e5a9db 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5161,7 +5161,8 @@ static void raid5_make_request(struct mddev *mddev, struct bio * bi)
DEFINE_WAIT(w);
bool do_prepare;
- if (unlikely(bi->bi_rw & REQ_PREFLUSH)) {
+ if (unlikely(bi->bi_rw & REQ_PREFLUSH) ||
+ unlikely(bi->bi_op == REQ_OP_FLUSH)) {
int ret = r5l_handle_flush_request(conf->log, bi);
if (ret == 0)
--
2.8.1
--
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