diff options
| -rw-r--r-- | drivers/md/dm-log.c | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c index 8d301409d81..a60acf8d385 100644 --- a/drivers/md/dm-log.c +++ b/drivers/md/dm-log.c @@ -149,6 +149,8 @@ struct log_c { FORCESYNC, /* Force a sync to happen */ } sync; + struct dm_io_request io_req; + /* * Disk log fields */ @@ -200,13 +202,20 @@ static void header_from_disk(struct log_header *core, struct log_header *disk) core->nr_regions = le64_to_cpu(disk->nr_regions); } +static int rw_header(struct log_c *lc, int rw) +{ + lc->io_req.bi_rw = rw; + lc->io_req.mem.ptr.vma = lc->disk_header; + lc->io_req.notify.fn = NULL; + + return dm_io(&lc->io_req, 1, &lc->header_location, NULL); +} + static int read_header(struct log_c *log) { int r; - unsigned long ebits; - r = dm_io_sync_vm(1, &log->header_location, READ, - log->disk_header, &ebits); + r = rw_header(log, READ); if (r) return r; @@ -234,11 +243,8 @@ static int read_header(struct log_c *log) static inline int write_header(struct log_c *log) { - unsigned long ebits; - header_to_disk(&log->header, log->disk_header); - return dm_io_sync_vm(1, &log->header_location, WRITE, - log->disk_header, &ebits); + return rw_header(log, WRITE); } /*---------------------------------------------------------------- @@ -257,6 +263,7 @@ static int create_log_context(struct dirty_log *log, struct dm_target *ti, uint32_t region_size; unsigned int region_count; size_t bitset_size, buf_size; + int r; if (argc < 1 || argc > 2) { DMWARN("wrong number of arguments to mirror log"); @@ -326,6 +333,15 @@ static int create_log_context(struct dirty_log *log, struct dm_target *ti, buf_size = dm_round_up((LOG_OFFSET << SECTOR_SHIFT) + bitset_size, ti->limits.hardsect_size); lc->header_location.count = buf_size >> SECTOR_SHIFT; + lc->io_req.mem.type = DM_IO_VMA; + lc->io_req.client = dm_io_client_create(dm_div_up(buf_size, + PAGE_SIZE)); + if (IS_ERR(lc->io_req.client)) { + r = PTR_ERR(lc->io_req.client); + DMWARN("couldn't allocate disk io client"); + kfree(lc); + return -ENOMEM; + } lc->disk_header = vmalloc(buf_size); if (!lc->disk_header) { @@ -426,6 +442,7 @@ static void disk_dtr(struct dirty_log *log) dm_put_device(lc->ti, lc->log_dev); vfree(lc->disk_header); + dm_io_client_destroy(lc->io_req.client); destroy_log_context(lc); } |