f2fs: support swapfile

This patch adds f2fs_bmap operation to the data address space.
This enables f2fs to support swapfile.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index b1347fc6d688b8dd543f762f2f21fa7fb48bd832..7bd22a201125636397c0d79d15a2822e83c130f4 100644 (file)
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -698,6 +698,11 @@ static int f2fs_set_data_page_dirty(struct page *page)
        return 0;
 }
 
+static sector_t f2fs_bmap(struct address_space *mapping, sector_t block)
+{
+       return generic_block_bmap(mapping, block, get_data_block_ro);
+}
+
 const struct address_space_operations f2fs_dblock_aops = {
        .readpage       = f2fs_read_data_page,
        .readpages      = f2fs_read_data_pages,
@@ -709,4 +714,5 @@ const struct address_space_operations f2fs_dblock_aops = {
        .invalidatepage = f2fs_invalidate_data_page,
        .releasepage    = f2fs_release_data_page,
        .direct_IO      = f2fs_direct_IO,
+       .bmap           = f2fs_bmap,
 };