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| author |   Chao Yu <chao2.yu@samsung.com> | 2015-10-12 17:05:59 +0800 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2015-10-12 14:03:15 -0700 |
| commit | 26879fb101f28c554294eaf25ac7817a2825b180 (patch) | |
| tree | 06eef8e5fc29c7dd5638cf2f78cd0bcc46575d79 /fs/f2fs/segment.c | |
| parent | f2fs: don't tag REQ_META for temporary non-meta pages (diff) | |
| download | linux-dev-26879fb101f28c554294eaf25ac7817a2825b180.tar.xz linux-dev-26879fb101f28c554294eaf25ac7817a2825b180.zip | |
f2fs: support lower priority asynchronous readahead in ra_meta_pages
Now, we use ra_meta_pages to reads continuous physical blocks as much as
possible to improve performance of following reads. However, ra_meta_pages
uses a synchronous readahead approach by submitting bio with READ, as READ
is with high priority, it can not be used in the case of preloading blocks,
and it's not sure when these RAed pages will be used.
This patch supports asynchronous readahead in ra_meta_pages by tagging bio
with READA flag in order to allow preloading.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.c')
| -rw-r--r-- | fs/f2fs/segment.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 13aa7a6eee53..5337fd6fdc32 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -1621,7 +1621,7 @@ static int restore_curseg_summaries(struct f2fs_sb_info *sbi) if (npages >= 2) ra_meta_pages(sbi, start_sum_block(sbi), npages, - META_CP); + META_CP, true); /* restore for compacted data summary */ if (read_compacted_summaries(sbi)) @@ -1631,7 +1631,7 @@ static int restore_curseg_summaries(struct f2fs_sb_info *sbi) if (__exist_node_summaries(sbi)) ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type), - NR_CURSEG_TYPE - type, META_CP); + NR_CURSEG_TYPE - type, META_CP, true); for (; type <= CURSEG_COLD_NODE; type++) { err = read_normal_summaries(sbi, type); @@ -2118,7 +2118,7 @@ static void build_sit_entries(struct f2fs_sb_info *sbi) int nrpages = MAX_BIO_BLOCKS(sbi); do { - readed = ra_meta_pages(sbi, start_blk, nrpages, META_SIT); + readed = ra_meta_pages(sbi, start_blk, nrpages, META_SIT, true); start = start_blk * sit_i->sents_per_block; end = (start_blk + readed) * sit_i->sents_per_block; |