diff options
| -rw-r--r-- | drivers/md/dm-log.c | 68 | ||||
| -rw-r--r-- | drivers/md/dm-raid1.c | 2 |
2 files changed, 20 insertions, 50 deletions
diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c index d73779a4241..ae41628b75c 100644 --- a/drivers/md/dm-log.c +++ b/drivers/md/dm-log.c @@ -155,8 +155,6 @@ struct log_c { struct io_region header_location; struct log_header *disk_header; - - struct io_region bits_location; }; /* @@ -241,29 +239,6 @@ static inline int write_header(struct log_c *log) } /*---------------------------------------------------------------- - * Bits IO - *--------------------------------------------------------------*/ -static int read_bits(struct log_c *log) -{ - int r; - unsigned long ebits; - - r = dm_io_sync_vm(1, &log->bits_location, READ, - log->clean_bits, &ebits); - if (r) - return r; - - return 0; -} - -static int write_bits(struct log_c *log) -{ - unsigned long ebits; - return dm_io_sync_vm(1, &log->bits_location, WRITE, - log->clean_bits, &ebits); -} - -/*---------------------------------------------------------------- * core log constructor/destructor * * argv contains region_size followed optionally by [no]sync @@ -373,9 +348,10 @@ static int disk_ctr(struct dirty_log *log, struct dm_target *ti, unsigned int argc, char **argv) { int r; - size_t size; + size_t size, bitset_size; struct log_c *lc; struct dm_dev *dev; + uint32_t *clean_bits; if (argc < 2 || argc > 3) { DMWARN("wrong number of arguments to disk mirror log"); @@ -399,23 +375,26 @@ static int disk_ctr(struct dirty_log *log, struct dm_target *ti, /* setup the disk header fields */ lc->header_location.bdev = lc->log_dev->bdev; lc->header_location.sector = 0; - lc->header_location.count = 1; - /* - * We can't read less than this amount, even though we'll - * not be using most of this space. - */ - lc->disk_header = vmalloc(1 << SECTOR_SHIFT); + /* Include both the header and the bitset in one buffer. */ + bitset_size = lc->bitset_uint32_count * sizeof(uint32_t); + size = dm_round_up((LOG_OFFSET << SECTOR_SHIFT) + bitset_size, + ti->limits.hardsect_size); + lc->header_location.count = size >> SECTOR_SHIFT; + + lc->disk_header = vmalloc(size); if (!lc->disk_header) goto bad; - /* setup the disk bitset fields */ - lc->bits_location.bdev = lc->log_dev->bdev; - lc->bits_location.sector = LOG_OFFSET; + /* + * Deallocate the clean_bits buffer that was allocated in core_ctr() + * and point it at the appropriate place in the disk_header buffer. + */ + clean_bits = lc->clean_bits; + lc->clean_bits = (void *)lc->disk_header + (LOG_OFFSET << SECTOR_SHIFT); + memcpy(lc->clean_bits, clean_bits, bitset_size); + vfree(clean_bits); - size = dm_round_up(lc->bitset_uint32_count * sizeof(uint32_t), - 1 << SECTOR_SHIFT); - lc->bits_location.count = size >> SECTOR_SHIFT; return 0; bad: @@ -429,6 +408,7 @@ static void disk_dtr(struct dirty_log *log) struct log_c *lc = (struct log_c *) log->context; dm_put_device(lc->ti, lc->log_dev); vfree(lc->disk_header); + lc->clean_bits = NULL; core_dtr(log); } @@ -454,11 +434,6 @@ static int disk_resume(struct dirty_log *log) if (r) return r; - /* read the bits */ - r = read_bits(lc); - if (r) - return r; - /* set or clear any new bits */ if (lc->sync == NOSYNC) for (i = lc->header.nr_regions; i < lc->region_count; i++) @@ -473,11 +448,6 @@ static int disk_resume(struct dirty_log *log) memcpy(lc->sync_bits, lc->clean_bits, size); lc->sync_count = count_bits32(lc->clean_bits, lc->bitset_uint32_count); - /* write the bits */ - r = write_bits(lc); - if (r) - return r; - /* set the correct number of regions in the header */ lc->header.nr_regions = lc->region_count; @@ -518,7 +488,7 @@ static int disk_flush(struct dirty_log *log) if (!lc->touched) return 0; - r = write_bits(lc); + r = write_header(lc); if (!r) lc->touched = 0; diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c index 346f3a59e77..84f2ed6d9c5 100644 --- a/drivers/md/dm-raid1.c +++ b/drivers/md/dm-raid1.c @@ -1220,7 +1220,7 @@ static int mirror_status(struct dm_target *ti, status_type_t type, static struct target_type mirror_target = { .name = "mirror", - .version = {1, 0, 1}, + .version = {1, 0, 2}, .module = THIS_MODULE, .ctr = mirror_ctr, .dtr = mirror_dtr, |