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| author | Matias Bjørling <m@bjorling.me> | 2016-05-06 21:03:04 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-05-06 21:51:10 +0300 |
| commit | 5136061ce705210b501ed9ecd673a67b74ebe017 (patch) | |
| tree | 9d53516525698e1a8576cabb324bbce2c78b8f8f /include/linux/lightnvm.h | |
| parent | 6f8645cba54a4b2983bbd46f462b5891ffbd72fc (diff) | |
| download | linux-5136061ce705210b501ed9ecd673a67b74ebe017.tar.xz | |
lightnvm: introduce nvm_for_each_lun_ppa() macro
Users that wish to iterate all luns on a device. Must create a
struct ppa_addr and separate iterators for channels and luns. To set the
iterators, two loops are required, one to iterate channels, and another
to iterate luns. This leads to decrease in readability.
Introduce nvm_for_each_lun_ppa, which implements the nested loop and
sets ppa, channel, and lun variable for each loop body, eliminating
the boilerplate code.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/lightnvm.h')
| -rw-r--r-- | include/linux/lightnvm.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h index 5eabdbaa87bc..3f256355b9fa 100644 --- a/include/linux/lightnvm.h +++ b/include/linux/lightnvm.h @@ -559,6 +559,13 @@ extern int nvm_update_sysblock(struct nvm_dev *, struct nvm_sb_info *); extern int nvm_init_sysblock(struct nvm_dev *, struct nvm_sb_info *); extern int nvm_dev_factory(struct nvm_dev *, int flags); + +#define nvm_for_each_lun_ppa(dev, ppa, chid, lunid) \ + for ((chid) = 0, (ppa).ppa = 0; (chid) < (dev)->nr_chnls; \ + (chid)++, (ppa).g.ch = (chid)) \ + for ((lunid) = 0; (lunid) < (dev)->luns_per_chnl; \ + (lunid)++, (ppa).g.lun = (lunid)) + #else /* CONFIG_NVM */ struct nvm_dev_ops; |