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| author | Igor Konopko | 2018-12-11 20:16:26 +0100 |
|---|---|---|
| committer | Jens Axboe | 2018-12-11 20:22:35 +0100 |
| commit | 55d8ec35398e7ab001989473cf6ed6f40b5ef4a6 (patch) | |
| tree | 69558b01d608060e20b49d32edd5d9e6ce8c5e40 /drivers/lightnvm/pblk.h | |
| parent | lightnvm: disable interleaved metadata (diff) | |
| download | kernel-qcow2-linux-55d8ec35398e7ab001989473cf6ed6f40b5ef4a6.tar.gz kernel-qcow2-linux-55d8ec35398e7ab001989473cf6ed6f40b5ef4a6.tar.xz kernel-qcow2-linux-55d8ec35398e7ab001989473cf6ed6f40b5ef4a6.zip | |
lightnvm: pblk: support packed metadata
pblk performs recovery of open lines by storing the LBA in the per LBA
metadata field. Recovery therefore only works for drives that has this
field.
This patch adds support for packed metadata, which store l2p mapping
for open lines in last sector of every write unit and enables drives
without per IO metadata to recover open lines.
After this patch, drives with OOB size <16B will use packed metadata
and metadata size larger than16B will continue to use the device per
IO metadata.
Reviewed-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Igor Konopko <igor.j.konopko@intel.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/lightnvm/pblk.h')
| -rw-r--r-- | drivers/lightnvm/pblk.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h index 9087d53d5c25..bc40b1381ff6 100644 --- a/drivers/lightnvm/pblk.h +++ b/drivers/lightnvm/pblk.h @@ -632,6 +632,7 @@ struct pblk { int state; /* pblk line state */ int min_write_pgs; /* Minimum amount of pages required by controller */ + int min_write_pgs_data; /* Minimum amount of payload pages */ int max_write_pgs; /* Maximum amount of pages supported by controller */ int oob_meta_size; /* Size of OOB sector metadata */ @@ -838,7 +839,7 @@ void pblk_dealloc_page(struct pblk *pblk, struct pblk_line *line, int nr_secs); u64 pblk_alloc_page(struct pblk *pblk, struct pblk_line *line, int nr_secs); u64 __pblk_alloc_page(struct pblk *pblk, struct pblk_line *line, int nr_secs); int pblk_calc_secs(struct pblk *pblk, unsigned long secs_avail, - unsigned long secs_to_flush); + unsigned long secs_to_flush, bool skip_meta); void pblk_down_rq(struct pblk *pblk, struct ppa_addr ppa, unsigned long *lun_bitmap); void pblk_down_chunk(struct pblk *pblk, struct ppa_addr ppa); @@ -862,6 +863,8 @@ void pblk_lookup_l2p_rand(struct pblk *pblk, struct ppa_addr *ppas, u64 *lba_list, int nr_secs); void pblk_lookup_l2p_seq(struct pblk *pblk, struct ppa_addr *ppas, sector_t blba, int nr_secs); +void *pblk_get_meta_for_writes(struct pblk *pblk, struct nvm_rq *rqd); +void pblk_get_packed_meta(struct pblk *pblk, struct nvm_rq *rqd); /* * pblk user I/O write path @@ -1392,4 +1395,9 @@ static inline int pblk_dma_meta_size(struct pblk *pblk) { return pblk->oob_meta_size * NVM_MAX_VLBA; } + +static inline int pblk_is_oob_meta_supported(struct pblk *pblk) +{ + return pblk->oob_meta_size >= sizeof(struct pblk_sec_meta); +} #endif /* PBLK_H_ */ |