openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

staging/lustre/llite: clip page correctly for vvp_io_commit_sync 

The original code was wrong which clipped page incorrectly for
partial pages started with zero.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/8531
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4201
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: wangdi <di.wang@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jinshan Xiong 2016-03-30 19:48:42 -04:00 committed by Greg Kroah-Hartman
parent 71a96a0539
commit c11599b8d5
1 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/staging/lustre/lustre/llite/vvp_io.c
View File

@ -595,15 +595,17 @@ static int vvp_io_commit_sync(const struct lu_env *env, struct cl_io *io,
if (plist->pl_nr == 0)
return 0;
if (from != 0) {
if (from > 0 || to != PAGE_SIZE) {
page = cl_page_list_first(plist);
cl_page_clip(env, page, from,
plist->pl_nr == 1 ? to : PAGE_SIZE);
}
if (to != PAGE_SIZE && plist->pl_nr > 1) {
if (plist->pl_nr == 1) {
cl_page_clip(env, page, from, to);
} else if (from > 0) {
cl_page_clip(env, page, from, PAGE_SIZE);
} else {
page = cl_page_list_last(plist);
cl_page_clip(env, page, 0, to);
}
}
cl_2queue_init(queue);
cl_page_list_splice(plist, &queue->c2_qin);