UBI: use vmalloc for large buffers

UBI allocates temporary buffers of PEB size, which may be 256KiB.
Use vmalloc instead of kmalloc for such big temporary buffers.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/mtd/ubi/upd.c b/drivers/mtd/ubi/upd.c
index 8925b977e3dc..0efc586a8328 100644
--- a/drivers/mtd/ubi/upd.c
+++ b/drivers/mtd/ubi/upd.c
@@ -150,7 +150,7 @@ int ubi_start_update(struct ubi_device *ubi, int vol_id, long long bytes)
                         vol->updating = 0;
         }
 
-        vol->upd_buf = kmalloc(ubi->leb_size, GFP_KERNEL);
+        vol->upd_buf = vmalloc(ubi->leb_size);
         if (!vol->upd_buf)
                 return -ENOMEM;
 
@@ -339,7 +339,7 @@ int ubi_more_update_data(struct ubi_device *ubi, int vol_id,
                 err = ubi_wl_flush(ubi);
                 if (err == 0) {
                         err = to_write;
-                        kfree(vol->upd_buf);
+                        vfree(vol->upd_buf);
                         vol->updating = 0;
                 }
         }