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(parent: ba6f7da) | patch
lib: scatterlist: Fix to support no mapped sg
authorZhou Wang <wangzhou1@hisilicon.com>
Wed, 24 Jul 2019 03:54:23 +0000 (11:54 +0800)
committerJens Axboe <axboe@kernel.dk>
Thu, 8 Aug 2019 13:45:01 +0000 (07:45 -0600)
commit79e178f4383a3a645f76bc2dd44c477b361c6a98
treec414e76b0d0eb6bd2d251f8f1f18198bcf5d5bcatree | snapshot
parentba6f7da99aaf00042b4ed2d8850ed7534492009ecommit | diff
lib: scatterlist: Fix to support no mapped sg

In function sg_split, the second sg_calculate_split will return -EINVAL
when in_mapped_nents is 0.

Indeed there is no need to do second sg_calculate_split and sg_split_mapped
when in_mapped_nents is 0, as in_mapped_nents indicates no mapped entry in
original sgl.

Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
lib/sg_split.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)