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authorHans Holmberg <hans.holmberg@cnexlabs.com>2018-10-09 14:11:46 +0300
committerJens Axboe <axboe@kernel.dk>2018-10-09 17:25:07 +0300
commitd68a9344041b6dd304ff382d0c7805869f09944f (patch)
treea14d5b06c1e0ab5e9d58693ae44cfbd18c5dd156 /include/linux/lightnvm.h
parent9cc85bc761f83da41935cdd6edcdb7c122bc90bf (diff)
downloadlinux-d68a9344041b6dd304ff382d0c7805869f09944f.tar.xz
lightnvm: introduce nvm_rq_to_ppa_list
There is a number of places in the lightnvm subsystem where the user iterates over the ppa list. Before iterating, the user must know if it is a single or multiple LBAs due to vector commands using either the nvm_rq ->ppa_addr or ->ppa_list fields on command submission, which leads to open-coding the if/else statement. Instead of having multiple if/else's, move it into a function that can be called by its users. A nice side effect of this cleanup is that this patch fixes up a bunch of cases where we don't consider the single-ppa case in pblk. Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com> Signed-off-by: Matias Bjørling <mb@lightnvm.io> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/lightnvm.h')
-rw-r--r--include/linux/lightnvm.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index 77743a02ec0d..50ac5b21297c 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -320,6 +320,11 @@ static inline void *nvm_rq_to_pdu(struct nvm_rq *rqdata)
return rqdata + 1;
}
+static inline struct ppa_addr *nvm_rq_to_ppa_list(struct nvm_rq *rqd)
+{
+ return (rqd->nr_ppas > 1) ? rqd->ppa_list : &rqd->ppa_addr;
+}
+
enum {
NVM_BLK_ST_FREE = 0x1, /* Free block */
NVM_BLK_ST_TGT = 0x2, /* Block in use by target */