Commits
Varun Prakash committed d96adb9b076
cxgbit: fix sg_nents calculation The current logic of calculating sg_nents can fail if data_offset % PAGE_SIZE is not zero. For example - PAGE_SIZE = 4096 data_len = 3072 data_offset = 3072 As per current logic sg_nents = max(1UL, DIV_ROUND_UP(data_len, PAGE_SIZE)); sg_nents = max(1UL, DIV_ROUND_UP(3072, 4096)); sg_nents = 1 But as data_offset % PAGE_SIZE = 3072 we should skip 3072 bytes skip = 3K sg_nents = max(1UL, DIV_ROUND_UP(3K(skip) + 3K(data_len), 4K(PAGE_SIZE)); sg_nents = 2; This patch fixes this issue by adding skip to data_len. Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>