Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-23 12:42:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

dm writecache: add cond_resched to loop in persistent_memory_claim()

Browse Source 
Add cond_resched() to a loop that fills in the mapper memory area
because the loop can be executed many times.

Fixes: 48debafe4f ("dm: add writecache target")
Cc: stable@vger.kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mikulas Patocka 2020-06-19 11:51:34 -04:00 committed by Mike Snitzer
parent f2cd9a5e85
commit d35bd764e6
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/md/dm-writecache.c
View File

@ -282,6 +282,8 @@ static int persistent_memory_claim(struct dm_writecache *wc)
while (daa-- && i < p) {
pages[i++] = pfn_t_to_page(pfn);
pfn.val++;
if (!(i & 15))
cond_resched();
}
} while (i < p);
wc->memory_map = vmap(pages, p, VM_MAP, PAGE_KERNEL);