From: Javier González Date: Tue, 11 Dec 2018 19:16:19 +0000 (+0100) Subject: lightnvm: pblk: add comments wrt locking in recovery path X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=361d889f830ef61e4eae442c4c89fb14b626375f;p=openwrt%2Fstaging%2Fblogic.git lightnvm: pblk: add comments wrt locking in recovery path pblk's recovery path is single threaded and therefore a number of assumptions regarding concurrency can be made. To avoid confusion, make this explicit with a couple of comments in the code. Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe --- diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c index 44c5dc046912..f1b411e7c7c9 100644 --- a/drivers/lightnvm/pblk-core.c +++ b/drivers/lightnvm/pblk-core.c @@ -1276,6 +1276,7 @@ static int pblk_line_prepare(struct pblk *pblk, struct pblk_line *line) return 0; } +/* Line allocations in the recovery path are always single threaded */ int pblk_line_recov_alloc(struct pblk *pblk, struct pblk_line *line) { struct pblk_line_mgmt *l_mg = &pblk->l_mg; diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c index 416d9840544b..4c726506a831 100644 --- a/drivers/lightnvm/pblk-recovery.c +++ b/drivers/lightnvm/pblk-recovery.c @@ -13,6 +13,9 @@ * General Public License for more details. * * pblk-recovery.c - pblk's recovery path + * + * The L2P recovery path is single threaded as the L2P table is updated in order + * following the line sequence ID. */ #include "pblk.h"