diff options
| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-05-25 17:17:56 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-06-02 18:05:20 -0700 |
| commit | 28ea6162e29ba0db87a512dda2bb6d6e63a6006f (patch) | |
| tree | b9d2e7bb0dc8ec94b5bfcd95b90fc9cc1bdb46b1 | |
| parent | 53aa6bbfdaae6fe71762e66e23c0fda1207beb2b (diff) | |
f2fs: do not skip writing data pages
For data pages, let's try to flush as much as possible in background.
On /dev/pmem0,
1. dd if=/dev/zero of=/mnt/test/testfile bs=1M count=2048 conv=fsync
Before : 800 MB/s
After : 1.1 GB/s
2. dd if=/dev/zero of=/mnt/test/testfile bs=1M count=2048
Before : 1.3 GB/s
After : 2.2 GB/s
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | fs/f2fs/data.c | 11 | ||||
| -rw-r--r-- | fs/f2fs/segment.h | 4 |
2 files changed, 6 insertions, 9 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 7132b0202860..85ceb2be4ac9 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1444,7 +1444,6 @@ static int f2fs_write_data_pages(struct address_space *mapping, struct inode *inode = mapping->host; struct f2fs_sb_info *sbi = F2FS_I_SB(inode); int ret; - long diff; /* deal with chardevs and other special file */ if (!mapping->a_ops->writepage) @@ -1469,14 +1468,14 @@ static int f2fs_write_data_pages(struct address_space *mapping, trace_f2fs_writepages(mapping->host, wbc, DATA); - diff = nr_pages_to_write(sbi, DATA, wbc); - ret = f2fs_write_cache_pages(mapping, wbc, __f2fs_writepage, mapping); - f2fs_submit_merged_bio_cond(sbi, inode, NULL, 0, DATA, WRITE); + /* + * if some pages were truncated, we cannot guarantee its mapping->host + * to detect pending bios. + */ + f2fs_submit_merged_bio(sbi, DATA, WRITE); remove_dirty_inode(inode); - - wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); return ret; skip_write: diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index 5d016a1edf21..890bb28d2082 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -728,9 +728,7 @@ static inline long nr_pages_to_write(struct f2fs_sb_info *sbi, int type, nr_to_write = wbc->nr_to_write; - if (type == DATA) - desired = 4096; - else if (type == NODE) + if (type == NODE) desired = 3 * max_hw_blocks(sbi); else desired = MAX_BIO_BLOCKS(sbi); |