queue-4.14/f2fs-move-dir-data-flush-to-write-checkpoint-process.patch

   1 From 5641cdf29b90a83166aab8bc4f97b39df59d9359 Mon Sep 17 00:00:00 2001
   2 From: Yunlei He <heyunlei@huawei.com>
   3 Date: Tue, 6 Nov 2018 10:25:29 +0800
   4 Subject: f2fs: move dir data flush to write checkpoint process
   5
   6 [ Upstream commit b61ac5b720146c619c7cdf17eff2551b934399e5 ]
   7
   8 This patch move dir data flush to write checkpoint process, by
   9 doing this, it may reduce some time for dir fsync.
  10
  11 pre:
  12         -f2fs_do_sync_file enter
  13                 -file_write_and_wait_range  <- flush & wait
  14                 -write_checkpoint
  15                         -do_checkpoint      <- wait all
  16         -f2fs_do_sync_file exit
  17
  18 now:
  19         -f2fs_do_sync_file enter
  20                 -write_checkpoint
  21                         -block_operations   <- flush dir & no wait
  22                         -do_checkpoint      <- wait all
  23         -f2fs_do_sync_file exit
  24
  25 Signed-off-by: Yunlei He <heyunlei@huawei.com>
  26 Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
  27 Signed-off-by: Sasha Levin <sashal@kernel.org>
  28 ---
  29  fs/f2fs/file.c | 3 +++
  30  1 file changed, 3 insertions(+)
  31
  32 diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
  33 index 7d3189f1941c..5f549bc4e097 100644
  34 --- a/fs/f2fs/file.c
  35 +++ b/fs/f2fs/file.c
  36 @@ -205,6 +205,9 @@ static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
  37
  38         trace_f2fs_sync_file_enter(inode);
  39
  40 +       if (S_ISDIR(inode->i_mode))
  41 +               goto go_write;
  42 +
  43         /* if fdatasync is triggered, let's do in-place-update */
  44         if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
  45                 set_inode_flag(inode, FI_NEED_IPU);
  46 --
  47 2.19.1
  48