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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-05-25 20:57:16 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-06-02 18:05:21 -0700 |
| commit | 46ae957f9b1611be2935ae626f601cda74f8160e (patch) | |
| tree | 25e16458328da67a57490a98f173c95d9e919efa | |
| parent | 28ea6162e29ba0db87a512dda2bb6d6e63a6006f (diff) | |
| download | linux-stable-46ae957f9b1611be2935ae626f601cda74f8160e.tar.gz linux-stable-46ae957f9b1611be2935ae626f601cda74f8160e.tar.bz2 linux-stable-46ae957f9b1611be2935ae626f601cda74f8160e.zip | |
f2fs: remove two steps to flush dirty data pages
If there is no cold page, we don't need to do a loop to flush dirty
data pages.
On /dev/pmem0,
1. dd if=/dev/zero of=/mnt/test/testfile bs=1M count=2048 conv=fsync
Before : 1.1 GB/s
After : 1.2 GB/s
2. dd if=/dev/zero of=/mnt/test/testfile bs=1M count=2048
Before : 2.2 GB/s
After : 2.3 GB/s
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | fs/f2fs/data.c | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 85ceb2be4ac9..5dcd8dbe2064 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1326,10 +1326,9 @@ static int f2fs_write_cache_pages(struct address_space *mapping, int cycled; int range_whole = 0; int tag; - int step = 0; pagevec_init(&pvec, 0); -next: + if (wbc->range_cyclic) { writeback_index = mapping->writeback_index; /* prev offset */ index = writeback_index; @@ -1384,9 +1383,6 @@ continue_unlock: goto continue_unlock; } - if (step == is_cold_data(page)) - goto continue_unlock; - if (PageWriteback(page)) { if (wbc->sync_mode != WB_SYNC_NONE) f2fs_wait_on_page_writeback(page, @@ -1421,11 +1417,6 @@ continue_unlock: cond_resched(); } - if (step < 1) { - step++; - goto next; - } - if (!cycled && !done) { cycled = 1; index = 0; |