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| author | Chao Yu <chao@kernel.org> | 2022-02-04 08:34:10 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2022-02-03 22:21:28 -0800 |
| commit | 430f163b01888dc26696365d9c1053ba9d6c7d92 (patch) | |
| tree | 076333f82610ab1c0ea54be69b4a12cb23009e58 /fs/f2fs/checkpoint.c | |
| parent | 6d18762ed5cd549fde74fd0e05d4d87bac5a3beb (diff) | |
| download | linux-430f163b01888dc26696365d9c1053ba9d6c7d92.tar.gz linux-430f163b01888dc26696365d9c1053ba9d6c7d92.tar.bz2 linux-430f163b01888dc26696365d9c1053ba9d6c7d92.zip | |
f2fs: adjust readahead block number during recovery
In a fragmented image, entries in dnode block list may locate in
incontiguous physical block address space, however, in recovery flow,
we will always readahead BIO_MAX_VECS size blocks, so in such case,
current readahead policy is low efficient, let's adjust readahead
window size dynamically based on consecutiveness of dnode blocks.
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/checkpoint.c')
| -rw-r--r-- | fs/f2fs/checkpoint.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index deeda95688f0..a13b6b4af220 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -282,18 +282,22 @@ out: return blkno - start; } -void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index) +void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index, + unsigned int ra_blocks) { struct page *page; bool readahead = false; + if (ra_blocks == RECOVERY_MIN_RA_BLOCKS) + return; + page = find_get_page(META_MAPPING(sbi), index); if (!page || !PageUptodate(page)) readahead = true; f2fs_put_page(page, 0); if (readahead) - f2fs_ra_meta_pages(sbi, index, BIO_MAX_VECS, META_POR, true); + f2fs_ra_meta_pages(sbi, index, ra_blocks, META_POR, true); } static int __f2fs_write_meta_page(struct page *page, |