diff options
author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2020-05-21 00:54:36 +0200 |
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committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2020-05-21 00:54:36 +0200 |
commit | 135d39dcedcedd1f44ea0bba52f15ac5922c114f (patch) | |
tree | 12379fc8ef7489eaca1c7245f8bd6af74c619a8f /drivers/md/persistent-data/dm-space-map-common.c | |
parent | 187764bd111b27783b6d68ffb3b3dbb3a9bafd38 (diff) | |
parent | 1279cd128bba968ebe0a2df7f7ae38bae90250ef (diff) |
Merge remote-tracking branch 'remotes/fslc/4.9-2.3.x-imx' into toradex_4.9-2.3.x-imx-next
Conflicts:
sound/soc/codecs/sgtl5000.c
sound/soc/fsl/imx-sgtl5000.c
Diffstat (limited to 'drivers/md/persistent-data/dm-space-map-common.c')
-rw-r--r-- | drivers/md/persistent-data/dm-space-map-common.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/md/persistent-data/dm-space-map-common.c b/drivers/md/persistent-data/dm-space-map-common.c index 306d2e4502c4..22729fd92a1b 100644 --- a/drivers/md/persistent-data/dm-space-map-common.c +++ b/drivers/md/persistent-data/dm-space-map-common.c @@ -382,6 +382,33 @@ int sm_ll_find_free_block(struct ll_disk *ll, dm_block_t begin, return -ENOSPC; } +int sm_ll_find_common_free_block(struct ll_disk *old_ll, struct ll_disk *new_ll, + dm_block_t begin, dm_block_t end, dm_block_t *b) +{ + int r; + uint32_t count; + + do { + r = sm_ll_find_free_block(new_ll, begin, new_ll->nr_blocks, b); + if (r) + break; + + /* double check this block wasn't used in the old transaction */ + if (*b >= old_ll->nr_blocks) + count = 0; + else { + r = sm_ll_lookup(old_ll, *b, &count); + if (r) + break; + + if (count) + begin = *b + 1; + } + } while (count); + + return r; +} + static int sm_ll_mutate(struct ll_disk *ll, dm_block_t b, int (*mutator)(void *context, uint32_t old, uint32_t *new), void *context, enum allocation_event *ev) |