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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-02 20:12:54 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-02 20:12:54 -0800 |
| commit | 17b02809cfa77abcab155ce3afbb1467e7f0744f (patch) | |
| tree | 4bb7b08fa29e73fb29a8e56fec766643b1eaa82e /drivers/md/persistent-data | |
| parent | 9cd02bd876d3b1a5a93f0c9376f578bde03a6b26 (diff) | |
| parent | 0414855fdc4a40da05221fc6062cccbc0c30f169 (diff) | |
| download | op-kernel-dev-17b02809cfa77abcab155ce3afbb1467e7f0744f.zip op-kernel-dev-17b02809cfa77abcab155ce3afbb1467e7f0744f.tar.gz | |
Merge 3.14-rc5 into staging-next
We want those fixes in here
Diffstat (limited to 'drivers/md/persistent-data')
| -rw-r--r-- | drivers/md/persistent-data/dm-space-map-metadata.c | 2 | ||||
| -rw-r--r-- | drivers/md/persistent-data/dm-space-map-metadata.h | 11 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/md/persistent-data/dm-space-map-metadata.c b/drivers/md/persistent-data/dm-space-map-metadata.c index 536782e..e9bdd46 100644 --- a/drivers/md/persistent-data/dm-space-map-metadata.c +++ b/drivers/md/persistent-data/dm-space-map-metadata.c @@ -680,6 +680,8 @@ int dm_sm_metadata_create(struct dm_space_map *sm, if (r) return r; + if (nr_blocks > DM_SM_METADATA_MAX_BLOCKS) + nr_blocks = DM_SM_METADATA_MAX_BLOCKS; r = sm_ll_extend(&smm->ll, nr_blocks); if (r) return r; diff --git a/drivers/md/persistent-data/dm-space-map-metadata.h b/drivers/md/persistent-data/dm-space-map-metadata.h index 39bba08..64df923 100644 --- a/drivers/md/persistent-data/dm-space-map-metadata.h +++ b/drivers/md/persistent-data/dm-space-map-metadata.h @@ -9,6 +9,17 @@ #include "dm-transaction-manager.h" +#define DM_SM_METADATA_BLOCK_SIZE (4096 >> SECTOR_SHIFT) + +/* + * The metadata device is currently limited in size. + * + * We have one block of index, which can hold 255 index entries. Each + * index entry contains allocation info about ~16k metadata blocks. + */ +#define DM_SM_METADATA_MAX_BLOCKS (255 * ((1 << 14) - 64)) +#define DM_SM_METADATA_MAX_SECTORS (DM_SM_METADATA_MAX_BLOCKS * DM_SM_METADATA_BLOCK_SIZE) + /* * Unfortunately we have to use two-phase construction due to the cycle * between the tm and sm. |
