raid5: separate header for log functions
Move raid5-cache declarations from raid5.h to raid5-log.h, add inline
wrappers for functions which will be shared with ppl and use them in
raid5 core instead of direct calls to raid5-cache.
Remove unused parameter from r5c_cache_data(), move two duplicated
pr_debug() calls to r5l_init_log().
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Shaohua Li <shli@fb.com>
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 013398c..f575f40 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -64,6 +64,7 @@
#include "raid5.h"
#include "raid0.h"
#include "bitmap.h"
+#include "raid5-log.h"
#define UNSUPPORTED_MDDEV_FLAGS (1L << MD_FAILFAST_SUPPORTED)
@@ -997,18 +998,8 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
might_sleep();
- if (!test_bit(STRIPE_R5C_CACHING, &sh->state)) {
- /* writing out phase */
- if (s->waiting_extra_page)
- return;
- if (r5l_write_stripe(conf->log, sh) == 0)
- return;
- } else { /* caching phase */
- if (test_bit(STRIPE_LOG_TRAPPED, &sh->state)) {
- r5c_cache_data(conf->log, sh, s);
- return;
- }
- }
+ if (log_stripe(sh, s) == 0)
+ return;
should_defer = conf->batch_bio_dispatch && conf->group_cnt;
@@ -3345,7 +3336,7 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh,
if (bi)
bitmap_end = 1;
- r5l_stripe_write_finished(sh);
+ log_stripe_write_finished(sh);
if (test_and_clear_bit(R5_Overlap, &sh->dev[i].flags))
wake_up(&conf->wait_for_overlap);
@@ -3764,7 +3755,7 @@ static void handle_stripe_clean_event(struct r5conf *conf,
discard_pending = 1;
}
- r5l_stripe_write_finished(sh);
+ log_stripe_write_finished(sh);
if (!discard_pending &&
test_bit(R5_Discard, &sh->dev[sh->pd_idx].flags)) {
@@ -4754,7 +4745,7 @@ static void handle_stripe(struct stripe_head *sh)
if (s.just_cached)
r5c_handle_cached_data_endio(conf, sh, disks, &s.return_bi);
- r5l_stripe_write_finished(sh);
+ log_stripe_write_finished(sh);
/* Now we might consider reading some blocks, either to check/generate
* parity, or to satisfy requests
@@ -6168,7 +6159,7 @@ static int handle_active_stripes(struct r5conf *conf, int group,
for (i = 0; i < batch_size; i++)
handle_stripe(batch[i]);
- r5l_write_stripe_run(conf->log);
+ log_write_stripe_run(conf);
cond_resched();
@@ -6745,8 +6736,8 @@ static void free_conf(struct r5conf *conf)
{
int i;
- if (conf->log)
- r5l_exit_log(conf->log);
+ log_exit(conf);
+
if (conf->shrinker.nr_deferred)
unregister_shrinker(&conf->shrinker);
@@ -7436,14 +7427,8 @@ static int raid5_run(struct mddev *mddev)
blk_queue_max_hw_sectors(mddev->queue, UINT_MAX);
}
- if (journal_dev) {
- char b[BDEVNAME_SIZE];
-
- pr_debug("md/raid:%s: using device %s as journal\n",
- mdname(mddev), bdevname(journal_dev->bdev, b));
- if (r5l_init_log(conf, journal_dev))
- goto abort;
- }
+ if (log_init(conf, journal_dev))
+ goto abort;
return 0;
abort:
@@ -7557,17 +7542,13 @@ static int raid5_remove_disk(struct mddev *mddev, struct md_rdev *rdev)
print_raid5_conf(conf);
if (test_bit(Journal, &rdev->flags) && conf->log) {
- struct r5l_log *log;
/*
* we can't wait pending write here, as this is called in
* raid5d, wait will deadlock.
*/
if (atomic_read(&mddev->writes_pending))
return -EBUSY;
- log = conf->log;
- conf->log = NULL;
- synchronize_rcu();
- r5l_exit_log(log);
+ log_exit(conf);
return 0;
}
if (rdev == p->rdev)
@@ -7636,7 +7617,6 @@ static int raid5_add_disk(struct mddev *mddev, struct md_rdev *rdev)
int last = conf->raid_disks - 1;
if (test_bit(Journal, &rdev->flags)) {
- char b[BDEVNAME_SIZE];
if (conf->log)
return -EBUSY;
@@ -7645,9 +7625,7 @@ static int raid5_add_disk(struct mddev *mddev, struct md_rdev *rdev)
* The array is in readonly mode if journal is missing, so no
* write requests running. We should be safe
*/
- r5l_init_log(conf, rdev);
- pr_debug("md/raid:%s: using device %s as journal\n",
- mdname(mddev), bdevname(rdev->bdev, b));
+ log_init(conf, rdev);
return 0;
}
if (mddev->recovery_disabled == conf->recovery_disabled)