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When splitting huge unmap requests, do it on sector boundary.

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This commit is contained in:
Alexander Motin 2014-04-09 10:44:09 +00:00
parent b8a8ed5664
commit 8f5a226a3c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=264296
1 changed files with 4 additions and 2 deletions
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6
sys/cam/ctl/ctl_backend_block.c
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@ -766,19 +766,21 @@ ctl_be_block_unmap_dev_range(struct ctl_be_block_lun *be_lun,
{
struct bio *bio;
struct ctl_be_block_devdata *dev_data;
uint64_t maxlen;
dev_data = &be_lun->backend.dev;
maxlen = LONG_MAX - (LONG_MAX % be_lun->blocksize);
while (len > 0) {
bio = g_alloc_bio();
bio->bio_cmd = BIO_DELETE;
bio->bio_flags |= beio->bio_flags;
bio->bio_dev = dev_data->cdev;
bio->bio_offset = off;
bio->bio_length = MIN(len, LONG_MAX);
bio->bio_length = MIN(len, maxlen);
bio->bio_data = 0;
bio->bio_done = ctl_be_block_biodone;
bio->bio_caller1 = beio;
bio->bio_pblkno = beio->io_offset / be_lun->blocksize;
bio->bio_pblkno = off / be_lun->blocksize;
off += bio->bio_length;
len -= bio->bio_length;