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Go Back   Linux Archive > Redhat > Device-mapper Development

 
 
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Old 09-11-2012, 12:22 AM
Kent Overstreet
 
Default raid10: Use bio_reset()

More prep work for immutable bio vecs, mainly getting rid of references
to bi_idx.

bio_reset was being open coded in a few places. The one in sync_request
was a bit nontrivial to convert, so could use some extra eyeballs.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
CC: NeilBrown <neilb@suse.de>
---
drivers/md/raid10.c | 31 +++++++++----------------------
1 file changed, 9 insertions(+), 22 deletions(-)

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index f001c1b..6b83207 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1958,13 +1958,10 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio)
* First we need to fixup bv_offset, bv_len and
* bi_vecs, as the read request might have corrupted these
*/
+ bio_reset(tbio);
+
tbio->bi_vcnt = vcnt;
tbio->bi_size = r10_bio->sectors << 9;
- tbio->bi_idx = 0;
- tbio->bi_phys_segments = 0;
- tbio->bi_flags &= ~(BIO_POOL_MASK - 1);
- tbio->bi_flags |= 1 << BIO_UPTODATE;
- tbio->bi_next = NULL;
tbio->bi_rw = WRITE;
tbio->bi_private = r10_bio;
tbio->bi_sector = r10_bio->devs[i].addr;
@@ -2970,6 +2967,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
}
}
bio = r10_bio->devs[0].bio;
+ bio_reset(bio);
bio->bi_next = biolist;
biolist = bio;
bio->bi_private = r10_bio;
@@ -2994,6 +2992,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
rdev = mirror->rdev;
if (!test_bit(In_sync, &rdev->flags)) {
bio = r10_bio->devs[1].bio;
+ bio_reset(bio);
bio->bi_next = biolist;
biolist = bio;
bio->bi_private = r10_bio;
@@ -3022,6 +3021,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
if (rdev == NULL || bio == NULL ||
test_bit(Faulty, &rdev->flags))
break;
+ bio_reset(bio);
bio->bi_next = biolist;
biolist = bio;
bio->bi_private = r10_bio;
@@ -3120,7 +3120,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
r10_bio->devs[i].repl_bio->bi_end_io = NULL;

bio = r10_bio->devs[i].bio;
- bio->bi_end_io = NULL;
+ bio_reset(bio);
clear_bit(BIO_UPTODATE, &bio->bi_flags);
if (conf->mirrors[d].rdev == NULL ||
test_bit(Faulty, &conf->mirrors[d].rdev->flags))
@@ -3157,6 +3157,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,

/* Need to set up for writing to the replacement */
bio = r10_bio->devs[i].repl_bio;
+ bio_reset(bio);
clear_bit(BIO_UPTODATE, &bio->bi_flags);

sector = r10_bio->devs[i].addr;
@@ -3190,17 +3191,6 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
}
}

- for (bio = biolist; bio ; bio=bio->bi_next) {
-
- bio->bi_flags &= ~(BIO_POOL_MASK - 1);
- if (bio->bi_end_io)
- bio->bi_flags |= 1 << BIO_UPTODATE;
- bio->bi_vcnt = 0;
- bio->bi_idx = 0;
- bio->bi_phys_segments = 0;
- bio->bi_size = 0;
- }
-
nr_sectors = 0;
if (sector_nr + max_sync < max_sector)
max_sector = sector_nr + max_sync;
@@ -4253,17 +4243,14 @@ read_more:
}
if (!rdev2 || test_bit(Faulty, &rdev2->flags))
continue;
+
+ bio_reset(b);
b->bi_bdev = rdev2->bdev;
b->bi_sector = r10_bio->devs[s/2].addr + rdev2->new_data_offset;
b->bi_private = r10_bio;
b->bi_end_io = end_reshape_write;
b->bi_rw = WRITE;
- b->bi_flags &= ~(BIO_POOL_MASK - 1);
- b->bi_flags |= 1 << BIO_UPTODATE;
b->bi_next = blist;
- b->bi_vcnt = 0;
- b->bi_idx = 0;
- b->bi_size = 0;
blist = b;
}

--
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Old 09-20-2012, 11:59 PM
Tejun Heo
 
Default raid10: Use bio_reset()

On Mon, Sep 10, 2012 at 05:22:22PM -0700, Kent Overstreet wrote:
> More prep work for immutable bio vecs, mainly getting rid of references
> to bi_idx.
>
> bio_reset was being open coded in a few places. The one in sync_request
> was a bit nontrivial to convert, so could use some extra eyeballs.
>
> Signed-off-by: Kent Overstreet <koverstreet@google.com>
> CC: Jens Axboe <axboe@kernel.dk>
> CC: NeilBrown <neilb@suse.de>

No idea at all. Neil?

Thanks.

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Old 09-24-2012, 10:34 PM
Kent Overstreet
 
Default raid10: Use bio_reset()

More prep work for immutable bio vecs, mainly getting rid of references
to bi_idx.

bio_reset was being open coded in a few places. The one in sync_request
was a bit nontrivial to convert, so could use some extra eyeballs.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
CC: NeilBrown <neilb@suse.de>
Acked-by: NeilBrown <neilb@suse.de>
---
drivers/md/raid10.c | 31 +++++++++----------------------
1 file changed, 9 insertions(+), 22 deletions(-)

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index f001c1b..6b83207 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1958,13 +1958,10 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio)
* First we need to fixup bv_offset, bv_len and
* bi_vecs, as the read request might have corrupted these
*/
+ bio_reset(tbio);
+
tbio->bi_vcnt = vcnt;
tbio->bi_size = r10_bio->sectors << 9;
- tbio->bi_idx = 0;
- tbio->bi_phys_segments = 0;
- tbio->bi_flags &= ~(BIO_POOL_MASK - 1);
- tbio->bi_flags |= 1 << BIO_UPTODATE;
- tbio->bi_next = NULL;
tbio->bi_rw = WRITE;
tbio->bi_private = r10_bio;
tbio->bi_sector = r10_bio->devs[i].addr;
@@ -2970,6 +2967,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
}
}
bio = r10_bio->devs[0].bio;
+ bio_reset(bio);
bio->bi_next = biolist;
biolist = bio;
bio->bi_private = r10_bio;
@@ -2994,6 +2992,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
rdev = mirror->rdev;
if (!test_bit(In_sync, &rdev->flags)) {
bio = r10_bio->devs[1].bio;
+ bio_reset(bio);
bio->bi_next = biolist;
biolist = bio;
bio->bi_private = r10_bio;
@@ -3022,6 +3021,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
if (rdev == NULL || bio == NULL ||
test_bit(Faulty, &rdev->flags))
break;
+ bio_reset(bio);
bio->bi_next = biolist;
biolist = bio;
bio->bi_private = r10_bio;
@@ -3120,7 +3120,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
r10_bio->devs[i].repl_bio->bi_end_io = NULL;

bio = r10_bio->devs[i].bio;
- bio->bi_end_io = NULL;
+ bio_reset(bio);
clear_bit(BIO_UPTODATE, &bio->bi_flags);
if (conf->mirrors[d].rdev == NULL ||
test_bit(Faulty, &conf->mirrors[d].rdev->flags))
@@ -3157,6 +3157,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,

/* Need to set up for writing to the replacement */
bio = r10_bio->devs[i].repl_bio;
+ bio_reset(bio);
clear_bit(BIO_UPTODATE, &bio->bi_flags);

sector = r10_bio->devs[i].addr;
@@ -3190,17 +3191,6 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
}
}

- for (bio = biolist; bio ; bio=bio->bi_next) {
-
- bio->bi_flags &= ~(BIO_POOL_MASK - 1);
- if (bio->bi_end_io)
- bio->bi_flags |= 1 << BIO_UPTODATE;
- bio->bi_vcnt = 0;
- bio->bi_idx = 0;
- bio->bi_phys_segments = 0;
- bio->bi_size = 0;
- }
-
nr_sectors = 0;
if (sector_nr + max_sync < max_sector)
max_sector = sector_nr + max_sync;
@@ -4253,17 +4243,14 @@ read_more:
}
if (!rdev2 || test_bit(Faulty, &rdev2->flags))
continue;
+
+ bio_reset(b);
b->bi_bdev = rdev2->bdev;
b->bi_sector = r10_bio->devs[s/2].addr + rdev2->new_data_offset;
b->bi_private = r10_bio;
b->bi_end_io = end_reshape_write;
b->bi_rw = WRITE;
- b->bi_flags &= ~(BIO_POOL_MASK - 1);
- b->bi_flags |= 1 << BIO_UPTODATE;
b->bi_next = blist;
- b->bi_vcnt = 0;
- b->bi_idx = 0;
- b->bi_size = 0;
blist = b;
}

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Old 10-15-2012, 08:08 PM
Kent Overstreet
 
Default raid10: Use bio_reset()

More prep work for immutable bio vecs, mainly getting rid of references
to bi_idx.

bio_reset was being open coded in a few places. The one in sync_request
was a bit nontrivial to convert, so could use some extra eyeballs.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
CC: NeilBrown <neilb@suse.de>
Acked-by: NeilBrown <neilb@suse.de>
---
drivers/md/raid10.c | 31 +++++++++----------------------
1 file changed, 9 insertions(+), 22 deletions(-)

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index f001c1b..6b83207 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1958,13 +1958,10 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio)
* First we need to fixup bv_offset, bv_len and
* bi_vecs, as the read request might have corrupted these
*/
+ bio_reset(tbio);
+
tbio->bi_vcnt = vcnt;
tbio->bi_size = r10_bio->sectors << 9;
- tbio->bi_idx = 0;
- tbio->bi_phys_segments = 0;
- tbio->bi_flags &= ~(BIO_POOL_MASK - 1);
- tbio->bi_flags |= 1 << BIO_UPTODATE;
- tbio->bi_next = NULL;
tbio->bi_rw = WRITE;
tbio->bi_private = r10_bio;
tbio->bi_sector = r10_bio->devs[i].addr;
@@ -2970,6 +2967,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
}
}
bio = r10_bio->devs[0].bio;
+ bio_reset(bio);
bio->bi_next = biolist;
biolist = bio;
bio->bi_private = r10_bio;
@@ -2994,6 +2992,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
rdev = mirror->rdev;
if (!test_bit(In_sync, &rdev->flags)) {
bio = r10_bio->devs[1].bio;
+ bio_reset(bio);
bio->bi_next = biolist;
biolist = bio;
bio->bi_private = r10_bio;
@@ -3022,6 +3021,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
if (rdev == NULL || bio == NULL ||
test_bit(Faulty, &rdev->flags))
break;
+ bio_reset(bio);
bio->bi_next = biolist;
biolist = bio;
bio->bi_private = r10_bio;
@@ -3120,7 +3120,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
r10_bio->devs[i].repl_bio->bi_end_io = NULL;

bio = r10_bio->devs[i].bio;
- bio->bi_end_io = NULL;
+ bio_reset(bio);
clear_bit(BIO_UPTODATE, &bio->bi_flags);
if (conf->mirrors[d].rdev == NULL ||
test_bit(Faulty, &conf->mirrors[d].rdev->flags))
@@ -3157,6 +3157,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,

/* Need to set up for writing to the replacement */
bio = r10_bio->devs[i].repl_bio;
+ bio_reset(bio);
clear_bit(BIO_UPTODATE, &bio->bi_flags);

sector = r10_bio->devs[i].addr;
@@ -3190,17 +3191,6 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
}
}

- for (bio = biolist; bio ; bio=bio->bi_next) {
-
- bio->bi_flags &= ~(BIO_POOL_MASK - 1);
- if (bio->bi_end_io)
- bio->bi_flags |= 1 << BIO_UPTODATE;
- bio->bi_vcnt = 0;
- bio->bi_idx = 0;
- bio->bi_phys_segments = 0;
- bio->bi_size = 0;
- }
-
nr_sectors = 0;
if (sector_nr + max_sync < max_sector)
max_sector = sector_nr + max_sync;
@@ -4253,17 +4243,14 @@ read_more:
}
if (!rdev2 || test_bit(Faulty, &rdev2->flags))
continue;
+
+ bio_reset(b);
b->bi_bdev = rdev2->bdev;
b->bi_sector = r10_bio->devs[s/2].addr + rdev2->new_data_offset;
b->bi_private = r10_bio;
b->bi_end_io = end_reshape_write;
b->bi_rw = WRITE;
- b->bi_flags &= ~(BIO_POOL_MASK - 1);
- b->bi_flags |= 1 << BIO_UPTODATE;
b->bi_next = blist;
- b->bi_vcnt = 0;
- b->bi_idx = 0;
- b->bi_size = 0;
blist = b;
}

--
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