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| author | Mikulas Patocka <mpatocka@redhat.com> | 2012-12-21 20:23:39 +0000 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2012-12-21 20:23:39 +0000 |
| commit | c7cfdf5973f644a21ef4a0a0f1aa1f081efc42c1 (patch) | |
| tree | fe9c287cca218170bd244ee688888cd775271f89 | |
| parent | 89c7cd8974035f1fbfac5c01e668b2de0733b443 (diff) | |
| download | op-kernel-dev-c7cfdf5973f644a21ef4a0a0f1aa1f081efc42c1.zip op-kernel-dev-c7cfdf5973f644a21ef4a0a0f1aa1f081efc42c1.tar.gz | |
dm flakey: dont use map_context
Replace map_info with a per-bio structure "struct per_bio_data" in dm-flakey.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| -rw-r--r-- | drivers/md/dm-flakey.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c index cc15543..660f981 100644 --- a/drivers/md/dm-flakey.c +++ b/drivers/md/dm-flakey.c @@ -39,6 +39,10 @@ enum feature_flag_bits { DROP_WRITES }; +struct per_bio_data { + bool bio_submitted; +}; + static int parse_features(struct dm_arg_set *as, struct flakey_c *fc, struct dm_target *ti) { @@ -214,6 +218,7 @@ static int flakey_ctr(struct dm_target *ti, unsigned int argc, char **argv) ti->num_flush_requests = 1; ti->num_discard_requests = 1; + ti->per_bio_data_size = sizeof(struct per_bio_data); ti->private = fc; return 0; @@ -270,6 +275,8 @@ static int flakey_map(struct dm_target *ti, struct bio *bio, { struct flakey_c *fc = ti->private; unsigned elapsed; + struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data)); + pb->bio_submitted = false; /* Are we alive ? */ elapsed = (jiffies - fc->start_time) / HZ; @@ -277,7 +284,7 @@ static int flakey_map(struct dm_target *ti, struct bio *bio, /* * Flag this bio as submitted while down. */ - map_context->ll = 1; + pb->bio_submitted = true; /* * Map reads as normal. @@ -318,13 +325,13 @@ static int flakey_end_io(struct dm_target *ti, struct bio *bio, int error, union map_info *map_context) { struct flakey_c *fc = ti->private; - unsigned bio_submitted_while_down = map_context->ll; + struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data)); /* * Corrupt successful READs while in down state. * If flags were specified, only corrupt those that match. */ - if (fc->corrupt_bio_byte && !error && bio_submitted_while_down && + if (fc->corrupt_bio_byte && !error && pb->bio_submitted && (bio_data_dir(bio) == READ) && (fc->corrupt_bio_rw == READ) && all_corrupt_bio_flags_match(bio, fc)) corrupt_bio_data(bio, fc); @@ -406,7 +413,7 @@ static int flakey_iterate_devices(struct dm_target *ti, iterate_devices_callout_ static struct target_type flakey_target = { .name = "flakey", - .version = {1, 2, 0}, + .version = {1, 3, 0}, .module = THIS_MODULE, .ctr = flakey_ctr, .dtr = flakey_dtr, |
