[PATCH] mm: use __GFP_NOMEMALLOC
Use the new __GFP_NOMEMALLOC to simplify the previous handling of
PF_MEMALLOC.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 77619a5..0dd6c2b 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -331,25 +331,19 @@
struct bio *bio;
unsigned int nr_iovecs = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
int gfp_mask = GFP_NOIO | __GFP_HIGHMEM;
- unsigned long flags = current->flags;
unsigned int i;
/*
- * Tell VM to act less aggressively and fail earlier.
- * This is not necessary but increases throughput.
+ * Use __GFP_NOMEMALLOC to tell the VM to act less aggressively and
+ * to fail earlier. This is not necessary but increases throughput.
* FIXME: Is this really intelligent?
*/
- current->flags &= ~PF_MEMALLOC;
-
if (base_bio)
- bio = bio_clone(base_bio, GFP_NOIO);
+ bio = bio_clone(base_bio, GFP_NOIO|__GFP_NOMEMALLOC);
else
- bio = bio_alloc(GFP_NOIO, nr_iovecs);
- if (!bio) {
- if (flags & PF_MEMALLOC)
- current->flags |= PF_MEMALLOC;
+ bio = bio_alloc(GFP_NOIO|__GFP_NOMEMALLOC, nr_iovecs);
+ if (!bio)
return NULL;
- }
/* if the last bio was not complete, continue where that one ended */
bio->bi_idx = *bio_vec_idx;
@@ -386,9 +380,6 @@
size -= bv->bv_len;
}
- if (flags & PF_MEMALLOC)
- current->flags |= PF_MEMALLOC;
-
if (!bio->bi_size) {
bio_put(bio);
return NULL;