From 119bc547362e5252074f81f56b8fcdac45cedff4 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Mon, 13 Jan 2014 19:13:36 -0500 Subject: [PATCH] dm snapshot: use GFP_KERNEL when initializing exceptions The list of initial exceptions is loaded in the target constructor. We are allowed to allocate memory with GFP_KERNEL at this point. So, change alloc_completed_exception to use GFP_KERNEL when being called from the constructor. Signed-off-by: Mikulas Patocka Signed-off-by: Mike Snitzer --- drivers/md/dm-snap.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index 944690b..7177185 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -610,12 +610,12 @@ static struct dm_exception *dm_lookup_exception(struct dm_exception_table *et, return NULL; } -static struct dm_exception *alloc_completed_exception(void) +static struct dm_exception *alloc_completed_exception(gfp_t gfp) { struct dm_exception *e; - e = kmem_cache_alloc(exception_cache, GFP_NOIO); - if (!e) + e = kmem_cache_alloc(exception_cache, gfp); + if (!e && gfp == GFP_NOIO) e = kmem_cache_alloc(exception_cache, GFP_ATOMIC); return e; @@ -697,7 +697,7 @@ static int dm_add_exception(void *context, chunk_t old, chunk_t new) struct dm_snapshot *s = context; struct dm_exception *e; - e = alloc_completed_exception(); + e = alloc_completed_exception(GFP_KERNEL); if (!e) return -ENOMEM; @@ -1405,7 +1405,7 @@ static void pending_complete(struct dm_snap_pending_exception *pe, int success) goto out; } - e = alloc_completed_exception(); + e = alloc_completed_exception(GFP_NOIO); if (!e) { down_write(&s->lock); __invalidate_snapshot(s, -ENOMEM); -- 2.7.4