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dm raid: more use of flag testing wrappers 

- add _test_flags() function

 - use it to simplify rs_check_for_invalid_flags()

 - use _test_flag() throughout

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Heinz Mauelshagen 2016-05-19 18:49:28 +02:00 committed by Mike Snitzer
parent f090279eaf
commit ad51d7f1d1
1 changed files with 23 additions and 25 deletions
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48
drivers/md/dm-raid.c
View File

@ -175,6 +175,12 @@ static bool _test_flag(uint32_t flag, uint32_t flags)
return (flag & flags) ? true : false;
}
/* Test multiple @flags in @all_flags */
static bool _test_flags(uint32_t flags, uint32_t all_flags)
{
return (flags & all_flags) ? true : false;
}
/* Return true if single @flag is set in @*flags, else set it and return false */
static bool _test_and_set_flag(uint32_t flag, uint32_t *flags)
{
@ -296,16 +302,8 @@ static uint32_t _invalid_flags(struct raid_set *rs)
*/
static int rs_check_for_invalid_flags(struct raid_set *rs)
{
unsigned int ctr_flags = rs->ctr_flags, flag = 0;
const uint32_t invalid_flags = _invalid_flags(rs);
while ((ctr_flags &= ~flag)) {
flag = 1 << __ffs(ctr_flags);
if (_test_flag(flag, rs->ctr_flags) &&
_test_flag(flag, invalid_flags))
return ti_error_einval(rs->ti, "Invalid flag combined");
}
if (_test_flags(rs->ctr_flags, _invalid_flags(rs)))
return ti_error_einval(rs->ti, "Invalid flag combined");
return 0;
}
@ -1150,7 +1148,7 @@ static int super_init_validation(struct mddev *mddev, struct md_rdev *rdev)
return -EINVAL;
}
if (!(rs->ctr_flags & (CTR_FLAG_SYNC | CTR_FLAG_NOSYNC)))
if (!(_test_flags(CTR_FLAGS_ANY_SYNC, rs->ctr_flags)))
mddev->recovery_cp = le64_to_cpu(sb->array_resync_offset);
/*
@ -1293,7 +1291,7 @@ static int analyse_superblocks(struct dm_target *ti, struct raid_set *rs)
*/
rdev->sectors = to_sector(i_size_read(rdev->bdev->bd_inode));
if (rs->ctr_flags & CTR_FLAG_SYNC)
if (_test_flag(CTR_FLAG_SYNC, rs->ctr_flags))
continue;
if (!rdev->meta_bdev)
@ -1650,7 +1648,7 @@ static void raid_status(struct dm_target *ti, status_type_t type,
case STATUSTYPE_TABLE:
/* The string you would use to construct this array */
for (i = 0; i < rs->md.raid_disks; i++) {
if ((rs->ctr_flags & CTR_FLAG_REBUILD) &&
if (_test_flag(CTR_FLAG_REBUILD, rs->ctr_flags) &&
rs->dev[i].data_dev &&
!test_bit(In_sync, &rs->dev[i].rdev.flags))
raid_param_cnt += 2; /* for rebuilds */
@ -1666,26 +1664,26 @@ static void raid_status(struct dm_target *ti, status_type_t type,
DMEMIT("%s %u %u", rs->raid_type->name,
raid_param_cnt, rs->md.chunk_sectors);
if ((rs->ctr_flags & CTR_FLAG_SYNC) &&
(rs->md.recovery_cp == MaxSector))
if (_test_flag(CTR_FLAG_SYNC, rs->ctr_flags) &&
rs->md.recovery_cp == MaxSector)
DMEMIT(" sync");
if (rs->ctr_flags & CTR_FLAG_NOSYNC)
if (_test_flag(CTR_FLAG_NOSYNC, rs->ctr_flags))
DMEMIT(" nosync");
for (i = 0; i < rs->md.raid_disks; i++)
if ((rs->ctr_flags & CTR_FLAG_REBUILD) &&
if (_test_flag(CTR_FLAG_REBUILD, rs->ctr_flags) &&
rs->dev[i].data_dev &&
!test_bit(In_sync, &rs->dev[i].rdev.flags))
DMEMIT(" rebuild %u", i);
if (rs->ctr_flags & CTR_FLAG_DAEMON_SLEEP)
if (_test_flag(CTR_FLAG_DAEMON_SLEEP, rs->ctr_flags))
DMEMIT(" daemon_sleep %lu",
rs->md.bitmap_info.daemon_sleep);
if (rs->ctr_flags & CTR_FLAG_MIN_RECOVERY_RATE)
if (_test_flag(CTR_FLAG_MIN_RECOVERY_RATE, rs->ctr_flags))
DMEMIT(" min_recovery_rate %d", rs->md.sync_speed_min);
if (rs->ctr_flags & CTR_FLAG_MAX_RECOVERY_RATE)
if (_test_flag(CTR_FLAG_MAX_RECOVERY_RATE, rs->ctr_flags))
DMEMIT(" max_recovery_rate %d", rs->md.sync_speed_max);
for (i = 0; i < rs->md.raid_disks; i++)
@ -1693,11 +1691,11 @@ static void raid_status(struct dm_target *ti, status_type_t type,
test_bit(WriteMostly, &rs->dev[i].rdev.flags))
DMEMIT(" write_mostly %u", i);
if (rs->ctr_flags & CTR_FLAG_MAX_WRITE_BEHIND)
if (_test_flag(CTR_FLAG_MAX_WRITE_BEHIND, rs->ctr_flags))
DMEMIT(" max_write_behind %lu",
rs->md.bitmap_info.max_write_behind);
if (rs->ctr_flags & CTR_FLAG_STRIPE_CACHE) {
if (_test_flag(CTR_FLAG_STRIPE_CACHE, rs->ctr_flags)) {
struct r5conf *conf = rs->md.private;
/* convert from kiB to sectors */
@ -1705,15 +1703,15 @@ static void raid_status(struct dm_target *ti, status_type_t type,
conf ? conf->max_nr_stripes * 2 : 0);
}
if (rs->ctr_flags & CTR_FLAG_REGION_SIZE)
if (_test_flag(CTR_FLAG_REGION_SIZE, rs->ctr_flags))
DMEMIT(" region_size %lu",
rs->md.bitmap_info.chunksize >> 9);
if (rs->ctr_flags & CTR_FLAG_RAID10_COPIES)
if (_test_flag(CTR_FLAG_RAID10_COPIES, rs->ctr_flags))
DMEMIT(" raid10_copies %u",
raid10_md_layout_to_copies(rs->md.layout));
if (rs->ctr_flags & CTR_FLAG_RAID10_FORMAT)
if (_test_flag(CTR_FLAG_RAID10_FORMAT, rs->ctr_flags))
DMEMIT(" raid10_format %s",
raid10_md_layout_to_format(rs->md.layout));