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Upgrade to 4.4.50-rt62
[kvmfornfv.git]
/
kernel
/
drivers
/
md
/
dm-log-writes.c
diff --git
a/kernel/drivers/md/dm-log-writes.c
b/kernel/drivers/md/dm-log-writes.c
index
624589d
..
c8b513e
100644
(file)
--- a/
kernel/drivers/md/dm-log-writes.c
+++ b/
kernel/drivers/md/dm-log-writes.c
@@
-258,12
+258,12
@@
static int log_one_block(struct log_writes_c *lc,
goto out;
sector++;
goto out;
sector++;
- bio = bio_alloc(GFP_KERNEL, block->vec_cnt);
+ atomic_inc(&lc->io_blocks);
+ bio = bio_alloc(GFP_KERNEL, min(block->vec_cnt, BIO_MAX_PAGES));
if (!bio) {
DMERR("Couldn't alloc log bio");
goto error;
}
if (!bio) {
DMERR("Couldn't alloc log bio");
goto error;
}
- atomic_inc(&lc->io_blocks);
bio->bi_iter.bi_size = 0;
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = lc->logdev->bdev;
bio->bi_iter.bi_size = 0;
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = lc->logdev->bdev;
@@
-280,7
+280,7
@@
static int log_one_block(struct log_writes_c *lc,
if (ret != block->vecs[i].bv_len) {
atomic_inc(&lc->io_blocks);
submit_bio(WRITE, bio);
if (ret != block->vecs[i].bv_len) {
atomic_inc(&lc->io_blocks);
submit_bio(WRITE, bio);
- bio = bio_alloc(GFP_KERNEL,
block->vec_cnt - i
);
+ bio = bio_alloc(GFP_KERNEL,
min(block->vec_cnt - i, BIO_MAX_PAGES)
);
if (!bio) {
DMERR("Couldn't alloc log bio");
goto error;
if (!bio) {
DMERR("Couldn't alloc log bio");
goto error;
@@
-456,9
+456,9
@@
static int log_writes_ctr(struct dm_target *ti, unsigned int argc, char **argv)
goto bad;
}
goto bad;
}
- ret = -EINVAL;
lc->log_kthread = kthread_run(log_writes_kthread, lc, "log-write");
lc->log_kthread = kthread_run(log_writes_kthread, lc, "log-write");
- if (!lc->log_kthread) {
+ if (IS_ERR(lc->log_kthread)) {
+ ret = PTR_ERR(lc->log_kthread);
ti->error = "Couldn't alloc kthread";
dm_put_device(ti, lc->dev);
dm_put_device(ti, lc->logdev);
ti->error = "Couldn't alloc kthread";
dm_put_device(ti, lc->dev);
dm_put_device(ti, lc->logdev);