percpu_counter: add @gfp to percpu_counter_init()

Percpu allocator now supports allocation mask.  Add @gfp to
percpu_counter_init() so that !GFP_KERNEL allocation masks can be used
with percpu_counters too.

We could have left percpu_counter_init() alone and added
percpu_counter_init_gfp(); however, the number of users isn't that
high and introducing _gfp variants to all percpu data structures would
be quite ugly, so let's just do the conversion.  This is the one with
the most users.  Other percpu data structures are a lot easier to
convert.

This patch doesn't make any functional difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Jan Kara <jack@suse.cz>
Acked-by: "David S. Miller" <davem@davemloft.net>
Cc: x86@kernel.org
Cc: Jens Axboe <axboe@kernel.dk>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 08e65e9cf2aa..61dae01788d7 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1180,7 +1180,7 @@ static struct btrfs_subvolume_writers *btrfs_alloc_subvolume_writers(void)
         if (!writers)
                 return ERR_PTR(-ENOMEM);
 
-        ret = percpu_counter_init(&writers->counter, 0);
+        ret = percpu_counter_init(&writers->counter, 0, GFP_KERNEL);
         if (ret < 0) {
                 kfree(writers);
                 return ERR_PTR(ret);
@@ -2185,7 +2185,7 @@ int open_ctree(struct super_block *sb,
                 goto fail_srcu;
         }
 
-        ret = percpu_counter_init(&fs_info->dirty_metadata_bytes, 0);
+        ret = percpu_counter_init(&fs_info->dirty_metadata_bytes, 0, GFP_KERNEL);
         if (ret) {
                 err = ret;
                 goto fail_bdi;
@@ -2193,13 +2193,13 @@ int open_ctree(struct super_block *sb,
         fs_info->dirty_metadata_batch = PAGE_CACHE_SIZE *
                                         (1 + ilog2(nr_cpu_ids));
 
-        ret = percpu_counter_init(&fs_info->delalloc_bytes, 0);
+        ret = percpu_counter_init(&fs_info->delalloc_bytes, 0, GFP_KERNEL);
         if (ret) {
                 err = ret;
                 goto fail_dirty_metadata_bytes;
         }
 
-        ret = percpu_counter_init(&fs_info->bio_counter, 0);
+        ret = percpu_counter_init(&fs_info->bio_counter, 0, GFP_KERNEL);
         if (ret) {
                 err = ret;
                 goto fail_delalloc_bytes;