[f2fs-dev] [PATCH 1/2] fsck.f2fs: fix meta readahead after non-contiguous blocks

[Yangyang Zang <zangyangyang66@gmail.com>]

When the current block is not contiguous with the in-progress readahead
range, f2fs_ra_meta_pages() issues the pending range but keeps the old
start block and length.

As a result, the current block is not included in any readahead range,
and subsequent non-contiguous blocks keep reissuing the stale range
instead of starting a new one.

Reset start_blk and len after issuing the pending range so readahead can
continue from the current block.

Signed-off-by: Yangyang Zang <zangyangyang1@xiaomi.com>
---
 fsck/mount.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fsck/mount.c b/fsck/mount.c
index 2f4e6c92bf6c..ea171a4c97c5 100644
--- a/fsck/mount.c
+++ b/fsck/mount.c
@@ -901,6 +901,8 @@ int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
 		} else {
 			dev_readahead(start_blk << F2FS_BLKSIZE_BITS,
 						len << F2FS_BLKSIZE_BITS);
+			start_blk = blkaddr;
+			len = 1;
 		}
 	}
 out:
-- 
2.43.0



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