rbd: drop rbd_header_from_disk() gfp_flags parameter

The function rbd_header_from_disk() is only called in one spot, and
it passes GFP_KERNEL as its value for the gfp_flags parameter.

Just drop that parameter and substitute GFP_KERNEL everywhere within
that function it had been used.  (If we find we need the parameter
again in the future it's easy enough to add back again.)

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index eed58e9..34ca5c6 100644 (file)
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -493,8 +493,7 @@ static bool rbd_dev_ondisk_valid(struct rbd_image_header_ondisk *ondisk)
  */
 static int rbd_header_from_disk(struct rbd_image_header *header,
                                 struct rbd_image_header_ondisk *ondisk,
-                                u32 allocated_snaps,
-                                gfp_t gfp_flags)
+                                u32 allocated_snaps)
 {
        u32 i, snap_count;
 
@@ -507,18 +506,18 @@ static int rbd_header_from_disk(struct rbd_image_header *header,
                return -EINVAL;
        header->snapc = kmalloc(sizeof(struct ceph_snap_context) +
                                snap_count * sizeof(u64),
-                               gfp_flags);
+                               GFP_KERNEL);
        if (!header->snapc)
                return -ENOMEM;
 
        header->snap_names_len = le64_to_cpu(ondisk->snap_names_len);
        if (snap_count) {
                header->snap_names = kmalloc(header->snap_names_len,
-                                            gfp_flags);
+                                            GFP_KERNEL);
                if (!header->snap_names)
                        goto err_snapc;
                header->snap_sizes = kmalloc(snap_count * sizeof(u64),
-                                            gfp_flags);
+                                            GFP_KERNEL);
                if (!header->snap_sizes)
                        goto err_names;
        } else {
@@ -527,7 +526,7 @@ static int rbd_header_from_disk(struct rbd_image_header *header,
        }
 
        header->object_prefix = kmalloc(sizeof (ondisk->block_name) + 1,
-                                       gfp_flags);
+                                       GFP_KERNEL);
        if (!header->object_prefix)
                goto err_sizes;
 
@@ -1625,7 +1624,7 @@ static int rbd_read_header(struct rbd_device *rbd_dev,
                if (rc < 0)
                        goto out_dh;
 
-               rc = rbd_header_from_disk(header, dh, snap_count, GFP_KERNEL);
+               rc = rbd_header_from_disk(header, dh, snap_count);
                if (rc < 0) {
                        if (rc == -ENXIO)
                                pr_warning("unrecognized header format"