Merge tag 'for-f2fs-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk...

Pull f2fs updates from Jaegeuk Kim:
 "This patch series contains several performance tuning patches
  regarding to the IO submission flow, in addition to supporting new
  features such as a ZBC-base drive and multiple devices.

  It also includes some major bug fixes such as:
   - checkpoint version control
   - fdatasync-related roll-forward recovery routine
   - memory boundary or null-pointer access in corner cases
   - missing error cases

  It has various minor clean-up patches as well"

* tag 'for-f2fs-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (66 commits)
  f2fs: fix a missing size change in f2fs_setattr
  f2fs: fix to access nullified flush_cmd_control pointer
  f2fs: free meta pages if sanity check for ckpt is failed
  f2fs: detect wrong layout
  f2fs: call sync_fs when f2fs is idle
  Revert "f2fs: use percpu_counter for # of dirty pages in inode"
  f2fs: return AOP_WRITEPAGE_ACTIVATE for writepage
  f2fs: do not activate auto_recovery for fallocated i_size
  f2fs: fix to determine start_cp_addr by sbi->cur_cp_pack
  f2fs: fix 32-bit build
  f2fs: set ->owner for debugfs status file's file_operations
  f2fs: fix incorrect free inode count in ->statfs
  f2fs: drop duplicate header timer.h
  f2fs: fix wrong AUTO_RECOVER condition
  f2fs: do not recover i_size if it's valid
  f2fs: fix fdatasync
  f2fs: fix to account total free nid correctly
  f2fs: fix an infinite loop when flush nodes in cp
  f2fs: don't wait writeback for datas during checkpoint
  f2fs: fix wrong written_valid_blocks counting
  ...

diff --cc fs/f2fs/checkpoint.c
Simple merge

diff --cc fs/f2fs/data.c
Simple merge

diff --cc fs/f2fs/f2fs.h
Simple merge

diff --cc fs/f2fs/gc.c
Simple merge

diff --cc fs/f2fs/inline.c
Simple merge

diff --cc fs/f2fs/node.c
Simple merge

diff --cc fs/f2fs/segment.c
index f1b4a1775ebebf0bce781fbdc59bf70ab289b61a,d7d5727fe8b2613c6fe3a88f759de55fd0708d78..0738f48293ccbfe0fd528ededfd6a4a08fe4251d
--- 1/fs/f2fs/segment.c
--- 2/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@@ -400,6 -404,33 +404,33 @@@ void f2fs_balance_fs_bg(struct f2fs_sb_
        }
  }
  
 -      bio_set_op_attrs(bio, REQ_OP_WRITE, WRITE_FLUSH);
+ static int __submit_flush_wait(struct block_device *bdev)
+ {
+       struct bio *bio = f2fs_bio_alloc(0);
+       int ret;
+ 
++      bio->bi_opf = REQ_OP_WRITE | REQ_PREFLUSH;
+       bio->bi_bdev = bdev;
+       ret = submit_bio_wait(bio);
+       bio_put(bio);
+       return ret;
+ }
+ 
+ static int submit_flush_wait(struct f2fs_sb_info *sbi)
+ {
+       int ret = __submit_flush_wait(sbi->sb->s_bdev);
+       int i;
+ 
+       if (sbi->s_ndevs && !ret) {
+               for (i = 1; i < sbi->s_ndevs; i++) {
+                       ret = __submit_flush_wait(FDEV(i).bdev);
+                       if (ret)
+                               break;
+               }
+       }
+       return ret;
+ }
+ 
  static int issue_flush_thread(void *data)
  {
        struct f2fs_sb_info *sbi = data;

diff --cc fs/f2fs/super.c
Simple merge

diff --cc include/trace/events/f2fs.h
Simple merge