Commit fb49a442 authored by David Hildenbrand's avatar David Hildenbrand Committed by Andrew Morton
Browse files

treewide: remove MIGRATEPAGE_SUCCESS 

At this point MIGRATEPAGE_SUCCESS is misnamed for all folio users,
and now that we remove MIGRATEPAGE_UNMAP, it's really the only "success"
return value that the code uses and expects.

Let's just get rid of MIGRATEPAGE_SUCCESS completely and just use "0"
for success.

Link: https://lkml.kernel.org/r/20250811143949.1117439-3-david@redhat.com


Signed-off-by: default avatarDavid Hildenbrand <david@redhat.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>			[mm]
Acked-by: Dave Kleikamp <dave.kleikamp@oracle.com>	[jfs]
Acked-by: David Sterba <dsterba@suse.com>		[btrfs]
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: default avatarByungchul Park <byungchul@sk.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dave Kleikamp <shaggy@kernel.org>
Cc: Eugenio Pé rez <eperezma@redhat.com>
Cc: Gregory Price <gourry@gourry.net>
Cc: "Huang, Ying" <ying.huang@linux.alibaba.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Jerrin Shaji George <jerrin.shaji-george@broadcom.com>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Mathew Brost <matthew.brost@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Cc: Lance Yang <lance.yang@linux.dev>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 95c2908f

arch/powerpc/platforms/pseries/cmm.c

+1 −1
Original line number Diff line number Diff line
@@ -545,7 +545,7 @@ static int cmm_migratepage(struct balloon_dev_info *b_dev_info, 
	/* balloon page list reference */

	put_page(page);



	return MIGRATEPAGE_SUCCESS;

	return 0;

}



static void cmm_balloon_compaction_init(void)

drivers/misc/vmw_balloon.c

+2 −2
Original line number Diff line number Diff line
@@ -1806,7 +1806,7 @@ static int vmballoon_migratepage(struct balloon_dev_info *b_dev_info, 
		 * the list after acquiring the lock.

		 */

		get_page(newpage);

		ret = MIGRATEPAGE_SUCCESS;

		ret = 0;

	}



	/* Update the balloon list under the @pages_lock */
@@ -1817,7 +1817,7 @@ static int vmballoon_migratepage(struct balloon_dev_info *b_dev_info, 
	 * If we succeed just insert it to the list and update the statistics

	 * under the lock.

	 */

	if (ret == MIGRATEPAGE_SUCCESS) {

	if (!ret) {

		balloon_page_insert(&b->b_dev_info, newpage);

		__count_vm_event(BALLOON_MIGRATE);

	}

drivers/virtio/virtio_balloon.c

+1 −1
Original line number Diff line number Diff line
@@ -875,7 +875,7 @@ static int virtballoon_migratepage(struct balloon_dev_info *vb_dev_info, 
	balloon_page_finalize(page);

	put_page(page); /* balloon reference */



	return MIGRATEPAGE_SUCCESS;

	return 0;

}

#endif /* CONFIG_BALLOON_COMPACTION */

fs/aio.c

+1 −1
Original line number Diff line number Diff line
@@ -445,7 +445,7 @@ static int aio_migrate_folio(struct address_space *mapping, struct folio *dst, 
	folio_get(dst);



	rc = folio_migrate_mapping(mapping, dst, src, 1);

	if (rc != MIGRATEPAGE_SUCCESS) {

	if (rc) {

		folio_put(dst);

		goto out_unlock;

	}

fs/btrfs/inode.c

+2 −2
Original line number Diff line number Diff line
@@ -7421,7 +7421,7 @@ static int btrfs_migrate_folio(struct address_space *mapping, 
{

	int ret = filemap_migrate_folio(mapping, dst, src, mode);



	if (ret != MIGRATEPAGE_SUCCESS)

	if (ret)

		return ret;



	if (folio_test_ordered(src)) {
@@ -7429,7 +7429,7 @@ static int btrfs_migrate_folio(struct address_space *mapping, 
		folio_set_ordered(dst);

	}



	return MIGRATEPAGE_SUCCESS;

	return 0;

}

#else

#define btrfs_migrate_folio NULL