Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ac6f1999 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: avoid latency-critical readahead of node pages 



The f2fs_map_blocks is very related to the performance, so let's avoid any
latency to read ahead node pages.

Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 2c237eba

fs/f2fs/data.c

+1 −1
Original line number Diff line number Diff line
@@ -652,7 +652,7 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, 
	unsigned int maxblocks = map->m_len;

	struct dnode_of_data dn;

	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);

	int mode = create ? ALLOC_NODE : LOOKUP_NODE_RA;

	int mode = create ? ALLOC_NODE : LOOKUP_NODE;

	pgoff_t pgofs, end_offset, end;

	int err = 0, ofs = 1;

	unsigned int ofs_in_node, last_ofs_in_node;

fs/f2fs/file.c

+1 −1
Original line number Diff line number Diff line
@@ -354,7 +354,7 @@ static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) 


	for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {

		set_new_dnode(&dn, inode, NULL, NULL, 0);

		err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA);

		err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);

		if (err && err != -ENOENT) {

			goto fail;

		} else if (err == -ENOENT) {