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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-02 19:53:09 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-02 19:53:09 -0800 |
| commit | aa074c1c805a38c01c0dfe56f78d409e33be28a2 (patch) | |
| tree | 5a361535d8df880af24e02b1508c2a6b44ae17c5 /drivers/md/persistent-data/dm-space-map-metadata.h | |
| parent | 7a962a4b6e86d27a7ba1c325a5981b52ad72c29b (diff) | |
| parent | 0414855fdc4a40da05221fc6062cccbc0c30f169 (diff) | |
Merge 3.14-rc5 into char-misc-next
We want these fixes in here as well.
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. |