f2fs: avoid to ra unneeded blocks in recover flow
To improve recovery speed, f2fs try to readahead many contiguous blocks in warm
node segment, but for most time, abnormal power-off do not occur frequently, so
when mount a normal power-off f2fs image, by contrary ra so many blocks and then
invalid them will hurt the performance of mount.
It's better to just ra the first next-block for normal condition.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index 9a93a6e..9160a37 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -170,13 +170,15 @@
curseg = CURSEG_I(sbi, CURSEG_WARM_NODE);
blkaddr = NEXT_FREE_BLKADDR(sbi, curseg);
+ ra_meta_pages(sbi, blkaddr, 1, META_POR);
+
while (1) {
struct fsync_inode_entry *entry;
if (blkaddr < MAIN_BLKADDR(sbi) || blkaddr >= MAX_BLKADDR(sbi))
return 0;
- page = get_meta_page_ra(sbi, blkaddr);
+ page = get_meta_page(sbi, blkaddr);
if (cp_ver != cpver_of_node(page))
break;
@@ -227,6 +229,8 @@
/* check next segment */
blkaddr = next_blkaddr_of_node(page);
f2fs_put_page(page, 1);
+
+ ra_meta_pages_cond(sbi, blkaddr);
}
f2fs_put_page(page, 1);
return err;
@@ -436,7 +440,9 @@
if (blkaddr < MAIN_BLKADDR(sbi) || blkaddr >= MAX_BLKADDR(sbi))
break;
- page = get_meta_page_ra(sbi, blkaddr);
+ ra_meta_pages_cond(sbi, blkaddr);
+
+ page = get_meta_page(sbi, blkaddr);
if (cp_ver != cpver_of_node(page)) {
f2fs_put_page(page, 1);