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Commit 7e08ce43 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
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f2fs: speed up defragment on sparse file 



We have supported to get next page offset with valid mapping crossing
hole in f2fs_map_blocks, utilizing it to speed up defragment on sparse
file.

Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 0f914cab

fs/f2fs/data.c

+5 −1
Original line number Diff line number Diff line
@@ -1017,10 +1017,14 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, 
					*map->m_next_pgofs = pgofs + 1;

				goto sync_out;

			}

			if (flag != F2FS_GET_BLOCK_FIEMAP)

			if (flag != F2FS_GET_BLOCK_FIEMAP) {

				/* for defragment case */

				if (map->m_next_pgofs)

					*map->m_next_pgofs = pgofs + 1;

				goto sync_out;

			}

		}

	}



	if (flag == F2FS_GET_BLOCK_PRE_AIO)

		goto skip;

fs/f2fs/file.c

+6 −5
Original line number Diff line number Diff line
@@ -2070,10 +2070,10 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi, 
					struct f2fs_defragment *range)

{

	struct inode *inode = file_inode(filp);

	struct f2fs_map_blocks map = { .m_next_pgofs = NULL,

			.m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE };

	struct f2fs_map_blocks map = { .m_next_extent = NULL,

					.m_seg_type = NO_CHECK_TYPE };

	struct extent_info ei = {0,0,0};

	pgoff_t pg_start, pg_end;

	pgoff_t pg_start, pg_end, next_pgofs;

	unsigned int blk_per_seg = sbi->blocks_per_seg;

	unsigned int total = 0, sec_num;

	block_t blk_end = 0;
@@ -2107,6 +2107,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi, 
	}



	map.m_lblk = pg_start;

	map.m_next_pgofs = &next_pgofs;



	/*

	 * lookup mapping info in dnode page cache, skip defragmenting if all
@@ -2120,7 +2121,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi, 
			goto out;



		if (!(map.m_flags & F2FS_MAP_FLAGS)) {

			map.m_lblk++;

			map.m_lblk = next_pgofs;

			continue;

		}
@@ -2165,7 +2166,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi, 
			goto clear_out;



		if (!(map.m_flags & F2FS_MAP_FLAGS)) {

			map.m_lblk++;

			map.m_lblk = next_pgofs;

			continue;

		}