tree 6b03661cf8578b12a0072c1539fe48ec2104b90c
parent a70985f83c625a5eaf618be81621e5e4521a66c6
author Zhoujie Wu <zjwu@marvell.com> 1539083534 +0200
committer Jens Axboe <axboe@kernel.dk> 1539095108 -0600

lightnvm: pblk: consider max hw sectors supported for max_write_pgs

When do GC, the number of read/write sectors are determined
by max_write_pgs(see gc_rq preparation in pblk_gc_line_prepare_ws).

Due to max_write_pgs doesn't consider max hw sectors
supported by nvme controller(128K), which leads to GC
tries to read 64 * 4K in one command, and see below error
caused by pblk_bio_map_addr in function pblk_submit_read_gc.

[ 2923.005376] pblk: could not add page to bio
[ 2923.005377] pblk: could not allocate GC bio (18446744073709551604)

Signed-off-by: Zhoujie Wu <zjwu@marvell.com>
Reviewed-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>