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authorMikulas Patocka <mpatocka@redhat.com>2014-01-14 01:13:36 +0100
committerMike Snitzer <snitzer@redhat.com>2014-01-14 17:18:16 +0100
commit119bc547362e5252074f81f56b8fcdac45cedff4 (patch)
tree57f4c605fc2e70993cadc426fd9f6cf5c4c9c1de /drivers/md
parentdm cache: add block sizes and total cache blocks to status output (diff)
downloadlinux-119bc547362e5252074f81f56b8fcdac45cedff4.tar.xz
linux-119bc547362e5252074f81f56b8fcdac45cedff4.zip
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 <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/dm-snap.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 944690bafd93..717718558bd9 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);