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| author | Mark Brown <broonie@linaro.org> | 2014-03-19 14:02:34 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-03-19 14:02:34 +0100 |
| commit | 236b11de51c7501c454ca125d84152b06ef7f27e (patch) | |
| tree | d0ca0b99961da2a8a46b4f86a57de8424dadce1d /drivers/md/persistent-data/dm-space-map-metadata.h | |
| parent | regulator: s2mps11: Fix section mismatch (diff) | |
| parent | Documentation: mfd: Add binding document for S2MPA01 (diff) | |
| download | linux-236b11de51c7501c454ca125d84152b06ef7f27e.tar.xz linux-236b11de51c7501c454ca125d84152b06ef7f27e.zip | |
Merge branch 'ib-mfd-regulator-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into regulator-s2mps11
Diffstat (limited to 'drivers/md/persistent-data/dm-space-map-metadata.h')
| -rw-r--r-- | drivers/md/persistent-data/dm-space-map-metadata.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/md/persistent-data/dm-space-map-metadata.h b/drivers/md/persistent-data/dm-space-map-metadata.h index 39bba0801cf2..64df923974d8 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. |