diff options
| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-03-18 08:47:11 +0400 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-03-18 11:37:53 +0400 |
| commit | 50c8cdb35ad8016c52fb2326ef9d65542e3a3e1b (patch) | |
| tree | db261148aaa96080b35d61f8b1ac09d1fecb87a4 /fs/f2fs/checkpoint.c | |
| parent | d3baf95da5b0bce9fe980eeff6140817d63fabdf (diff) | |
| download | linux-50c8cdb35ad8016c52fb2326ef9d65542e3a3e1b.tar.xz | |
f2fs: introduce nr_pages_to_write for segment alignment
This patch introduces nr_pages_to_write to align page writes to the segment
or other operational unit size, which can be tuned according to the system
environment.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/checkpoint.c')
| -rw-r--r-- | fs/f2fs/checkpoint.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index aef32f36e2f3..2a00c94726fb 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -187,18 +187,19 @@ static int f2fs_write_meta_pages(struct address_space *mapping, struct writeback_control *wbc) { struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); - int nrpages = nr_pages_to_skip(sbi, META); - long written; + long diff, written; /* collect a number of dirty meta pages and write together */ - if (wbc->for_kupdate || get_pages(sbi, F2FS_DIRTY_META) < nrpages) + if (wbc->for_kupdate || + get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) goto skip_write; /* if mounting is failed, skip writing node pages */ mutex_lock(&sbi->cp_mutex); - written = sync_meta_pages(sbi, META, nrpages); + diff = nr_pages_to_write(sbi, META, wbc); + written = sync_meta_pages(sbi, META, wbc->nr_to_write); mutex_unlock(&sbi->cp_mutex); - wbc->nr_to_write -= written; + wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); return 0; skip_write: |