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md: add a new helper rdev_has_badblock()

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The current api is_badblock() must pass in 'first_bad' and
'bad_sectors', however, many caller just want to know if there are
badblocks or not, and these caller must define two local variable that
will never be used.

Add a new helper rdev_has_badblock() that will only return if there are
badblocks or not, remove unnecessary local variables and replace
is_badblock() with the new helper in many places.

There are no functional changes, and the new helper will also be used
later to refactor read_balance().

Co-developed-by: Paul Luse <paul.e.luse@linux.intel.com>
Signed-off-by: Paul Luse <paul.e.luse@linux.intel.com>
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20240229095714.926789-2-yukuai1@huaweicloud.com
This commit is contained in:
Yu Kuai 2024-02-29 17:57:04 +08:00 committed by Song Liu
parent dfd2bf4367
commit 3a0f007b69
4 changed files with 44 additions and 72 deletions
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10
drivers/md/md.h
View File

@ -222,6 +222,16 @@ static inline int is_badblock(struct md_rdev *rdev, sector_t s, int sectors,
}
return 0;
}
static inline int rdev_has_badblock(struct md_rdev *rdev, sector_t s,
int sectors)
{
sector_t first_bad;
int bad_sectors;
return is_badblock(rdev, s, sectors, &first_bad, &bad_sectors);
}
extern int rdev_set_badblocks(struct md_rdev *rdev, sector_t s, int sectors,
int is_new);
extern int rdev_clear_badblocks(struct md_rdev *rdev, sector_t s, int sectors,

26
drivers/md/raid1.c
View File

@ -498,9 +498,6 @@ static void raid1_end_write_request(struct bio *bio)
* to user-side. So if something waits for IO, then it
* will wait for the 'master' bio.
*/
sector_t first_bad;
int bad_sectors;
r1_bio->bios[mirror] = NULL;
to_put = bio;
/*
@ -516,8 +513,8 @@ static void raid1_end_write_request(struct bio *bio)
set_bit(R1BIO_Uptodate, &r1_bio->state);
/* Maybe we can clear some bad blocks. */
if (is_badblock(rdev, r1_bio->sector, r1_bio->sectors,
&first_bad, &bad_sectors) && !discard_error) {
if (rdev_has_badblock(rdev, r1_bio->sector, r1_bio->sectors) &&
!discard_error) {
r1_bio->bios[mirror] = IO_MADE_GOOD;
set_bit(R1BIO_MadeGood, &r1_bio->state);
}
@ -1944,8 +1941,6 @@ static void end_sync_write(struct bio *bio)
struct r1bio *r1_bio = get_resync_r1bio(bio);
struct mddev *mddev = r1_bio->mddev;
struct r1conf *conf = mddev->private;
sector_t first_bad;
int bad_sectors;
struct md_rdev *rdev = conf->mirrors[find_bio_disk(r1_bio, bio)].rdev;
if (!uptodate) {
@ -1955,14 +1950,11 @@ static void end_sync_write(struct bio *bio)
set_bit(MD_RECOVERY_NEEDED, &
mddev->recovery);
set_bit(R1BIO_WriteError, &r1_bio->state);
} else if (is_badblock(rdev, r1_bio->sector, r1_bio->sectors,
&first_bad, &bad_sectors) &&
!is_badblock(conf->mirrors[r1_bio->read_disk].rdev,
r1_bio->sector,
r1_bio->sectors,
&first_bad, &bad_sectors)
)
} else if (rdev_has_badblock(rdev, r1_bio->sector, r1_bio->sectors) &&
!rdev_has_badblock(conf->mirrors[r1_bio->read_disk].rdev,
r1_bio->sector, r1_bio->sectors)) {
set_bit(R1BIO_MadeGood, &r1_bio->state);
}
put_sync_write_buf(r1_bio, uptodate);
}
@ -2279,16 +2271,12 @@ static void fix_read_error(struct r1conf *conf, struct r1bio *r1_bio)
s = PAGE_SIZE >> 9;
do {
sector_t first_bad;
int bad_sectors;
rdev = conf->mirrors[d].rdev;
if (rdev &&
(test_bit(In_sync, &rdev->flags) ||
(!test_bit(Faulty, &rdev->flags) &&
rdev->recovery_offset >= sect + s)) &&
is_badblock(rdev, sect, s,
&first_bad, &bad_sectors) == 0) {
rdev_has_badblock(rdev, sect, s) == 0) {
atomic_inc(&rdev->nr_pending);
if (sync_page_io(rdev, sect, s<<9,
conf->tmppage, REQ_OP_READ, false))

45
drivers/md/raid10.c
View File

@ -518,11 +518,7 @@ static void raid10_end_write_request(struct bio *bio)
* The 'master' represents the composite IO operation to
* user-side. So if something waits for IO, then it will
* wait for the 'master' bio.
*/
sector_t first_bad;
int bad_sectors;
/*
*
* Do not set R10BIO_Uptodate if the current device is
* rebuilding or Faulty. This is because we cannot use
* such device for properly reading the data back (we could
@ -535,10 +531,9 @@ static void raid10_end_write_request(struct bio *bio)
set_bit(R10BIO_Uptodate, &r10_bio->state);
/* Maybe we can clear some bad blocks. */
if (is_badblock(rdev,
r10_bio->devs[slot].addr,
r10_bio->sectors,
&first_bad, &bad_sectors) && !discard_error) {
if (rdev_has_badblock(rdev, r10_bio->devs[slot].addr,
r10_bio->sectors) &&
!discard_error) {
bio_put(bio);
if (repl)
r10_bio->devs[slot].repl_bio = IO_MADE_GOOD;
@ -1330,10 +1325,7 @@ retry_wait:
}
if (rdev && test_bit(WriteErrorSeen, &rdev->flags)) {
sector_t first_bad;
sector_t dev_sector = r10_bio->devs[i].addr;
int bad_sectors;
int is_bad;
/*
* Discard request doesn't care the write result
@ -1342,9 +1334,8 @@ retry_wait:
if (!r10_bio->sectors)
continue;
is_bad = is_badblock(rdev, dev_sector, r10_bio->sectors,
&first_bad, &bad_sectors);
if (is_bad < 0) {
if (rdev_has_badblock(rdev, dev_sector,
r10_bio->sectors) < 0) {
/*
* Mustn't write here until the bad block
* is acknowledged
@ -2290,8 +2281,6 @@ static void end_sync_write(struct bio *bio)
struct mddev *mddev = r10_bio->mddev;
struct r10conf *conf = mddev->private;
int d;
sector_t first_bad;
int bad_sectors;
int slot;
int repl;
struct md_rdev *rdev = NULL;
@ -2312,11 +2301,10 @@ static void end_sync_write(struct bio *bio)
&rdev->mddev->recovery);
set_bit(R10BIO_WriteError, &r10_bio->state);
}
} else if (is_badblock(rdev,
r10_bio->devs[slot].addr,
r10_bio->sectors,
&first_bad, &bad_sectors))
} else if (rdev_has_badblock(rdev, r10_bio->devs[slot].addr,
r10_bio->sectors)) {
set_bit(R10BIO_MadeGood, &r10_bio->state);
}
rdev_dec_pending(rdev, mddev);
@ -2597,11 +2585,8 @@ static void recovery_request_write(struct mddev *mddev, struct r10bio *r10_bio)
static int r10_sync_page_io(struct md_rdev *rdev, sector_t sector,
int sectors, struct page *page, enum req_op op)
{
sector_t first_bad;
int bad_sectors;
if (is_badblock(rdev, sector, sectors, &first_bad, &bad_sectors)
&& (op == REQ_OP_READ || test_bit(WriteErrorSeen, &rdev->flags)))
if (rdev_has_badblock(rdev, sector, sectors) &&
(op == REQ_OP_READ || test_bit(WriteErrorSeen, &rdev->flags)))
return -1;
if (sync_page_io(rdev, sector, sectors << 9, page, op, false))
/* success */
@ -2658,16 +2643,14 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
s = PAGE_SIZE >> 9;
do {
sector_t first_bad;
int bad_sectors;
d = r10_bio->devs[sl].devnum;
rdev = conf->mirrors[d].rdev;
if (rdev &&
test_bit(In_sync, &rdev->flags) &&
!test_bit(Faulty, &rdev->flags) &&
is_badblock(rdev, r10_bio->devs[sl].addr + sect, s,
&first_bad, &bad_sectors) == 0) {
rdev_has_badblock(rdev,
r10_bio->devs[sl].addr + sect,
s) == 0) {
atomic_inc(&rdev->nr_pending);
success = sync_page_io(rdev,
r10_bio->devs[sl].addr +

35
drivers/md/raid5.c
View File

@ -1210,10 +1210,8 @@ again:
*/
while (op_is_write(op) && rdev &&
test_bit(WriteErrorSeen, &rdev->flags)) {
sector_t first_bad;
int bad_sectors;
int bad = is_badblock(rdev, sh->sector, RAID5_STRIPE_SECTORS(conf),
&first_bad, &bad_sectors);
int bad = rdev_has_badblock(rdev, sh->sector,
RAID5_STRIPE_SECTORS(conf));
if (!bad)
break;
@ -2855,8 +2853,6 @@ static void raid5_end_write_request(struct bio *bi)
struct r5conf *conf = sh->raid_conf;
int disks = sh->disks, i;
struct md_rdev *rdev;
sector_t first_bad;
int bad_sectors;
int replacement = 0;
for (i = 0 ; i < disks; i++) {
@ -2888,9 +2884,8 @@ static void raid5_end_write_request(struct bio *bi)
if (replacement) {
if (bi->bi_status)
md_error(conf->mddev, rdev);
else if (is_badblock(rdev, sh->sector,
RAID5_STRIPE_SECTORS(conf),
&first_bad, &bad_sectors))
else if (rdev_has_badblock(rdev, sh->sector,
RAID5_STRIPE_SECTORS(conf)))
set_bit(R5_MadeGoodRepl, &sh->dev[i].flags);
} else {
if (bi->bi_status) {
@ -2900,9 +2895,8 @@ static void raid5_end_write_request(struct bio *bi)
if (!test_and_set_bit(WantReplacement, &rdev->flags))
set_bit(MD_RECOVERY_NEEDED,
&rdev->mddev->recovery);
} else if (is_badblock(rdev, sh->sector,
RAID5_STRIPE_SECTORS(conf),
&first_bad, &bad_sectors)) {
} else if (rdev_has_badblock(rdev, sh->sector,
RAID5_STRIPE_SECTORS(conf))) {
set_bit(R5_MadeGood, &sh->dev[i].flags);
if (test_bit(R5_ReadError, &sh->dev[i].flags))
/* That was a successful write so make
@ -4674,8 +4668,6 @@ static void analyse_stripe(struct stripe_head *sh, struct stripe_head_state *s)
/* Now to look around and see what can be done */
for (i=disks; i--; ) {
struct md_rdev *rdev;
sector_t first_bad;
int bad_sectors;
int is_bad = 0;
dev = &sh->dev[i];
@ -4719,8 +4711,8 @@ static void analyse_stripe(struct stripe_head *sh, struct stripe_head_state *s)
rdev = conf->disks[i].replacement;
if (rdev && !test_bit(Faulty, &rdev->flags) &&
rdev->recovery_offset >= sh->sector + RAID5_STRIPE_SECTORS(conf) &&
!is_badblock(rdev, sh->sector, RAID5_STRIPE_SECTORS(conf),
&first_bad, &bad_sectors))
!rdev_has_badblock(rdev, sh->sector,
RAID5_STRIPE_SECTORS(conf)))
set_bit(R5_ReadRepl, &dev->flags);
else {
if (rdev && !test_bit(Faulty, &rdev->flags))
@ -4733,8 +4725,8 @@ static void analyse_stripe(struct stripe_head *sh, struct stripe_head_state *s)
if (rdev && test_bit(Faulty, &rdev->flags))
rdev = NULL;
if (rdev) {
is_bad = is_badblock(rdev, sh->sector, RAID5_STRIPE_SECTORS(conf),
&first_bad, &bad_sectors);
is_bad = rdev_has_badblock(rdev, sh->sector,
RAID5_STRIPE_SECTORS(conf));
if (s->blocked_rdev == NULL
&& (test_bit(Blocked, &rdev->flags)
|| is_bad < 0)) {
@ -5463,8 +5455,8 @@ static int raid5_read_one_chunk(struct mddev *mddev, struct bio *raid_bio)
struct r5conf *conf = mddev->private;
struct bio *align_bio;
struct md_rdev *rdev;
sector_t sector, end_sector, first_bad;
int bad_sectors, dd_idx;
sector_t sector, end_sector;
int dd_idx;
bool did_inc;
if (!in_chunk_boundary(mddev, raid_bio)) {
@ -5493,8 +5485,7 @@ static int raid5_read_one_chunk(struct mddev *mddev, struct bio *raid_bio)
atomic_inc(&rdev->nr_pending);
if (is_badblock(rdev, sector, bio_sectors(raid_bio), &first_bad,
&bad_sectors)) {
if (rdev_has_badblock(rdev, sector, bio_sectors(raid_bio))) {
rdev_dec_pending(rdev, mddev);
return 0;
}