tree 84a2c04da9521953b1883b04bc9b54a51d600a4c
parent 8e018c21da3febb558586b48c8db0d6d66cb6593
author Shaohua Li <shli@fb.com> 1472578173 -0700
committer Shaohua Li <shli@fb.com> 1472659523 -0700

raid5: guarantee enough stripes to avoid reshape hang

If there aren't enough stripes, reshape will hang. We have a check for
this in new reshape, but miss it for reshape resume, hence we could see
hang in reshape resume. This patch forces enough stripes existed if
reshape resumes.

Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>