linux-stable.git/fs/f2fs/node.c, branch v4.16

f2fs: use GFP_F2FS_ZERO for cleanup

2018-01-25T18:39:49+00:00

Clean up codes with GFP_F2FS_ZERO, no logic changes.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: drop page cache after fs shutdown

2018-01-22T22:56:56+00:00

Don't remain dirtied page cache in f2fs after shutdown, it can mitigate
memory pressure of whole system, in order to keep other modules working
properly.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: implement cgroup writeback support

2018-01-16T23:40:01+00:00

Cgroup writeback requires explicit support from the filesystem.
f2fs's data and node writeback IOs go through __write_data_page,
which sets fio for submiting IOs. So, we add io_wbc for fio,
associate bios with blkcg by invoking wbc_init_bio() and
account IOs issuing by wbc_account_io().
In addtion, f2fs_fill_super() is updated to set SB_I_CGROUPWB.

Meta writeback IOs is left alone by this patch and will always be
attributed to the root cgroup.

The results show that f2fs can throttle writeback nicely for
data writing and file creating.

Reviewed-by: Chao Yu 
Signed-off-by: Yufen Yu 
Signed-off-by: Jaegeuk Kim

f2fs: update inode info to inode page for new file

2018-01-16T23:39:56+00:00

After checkpoint,
 1. creat a new file A ,(with dirty inode && dirty inode page && xattr info)
 2. backgroud wb write back file A inode page (without update from inode cache)
 3. fsync file A, write back inode page of file A with inode cache info
 4. sudden power off before new checkpoint

In this case, recovery process will try to recover a zero inode
page. Inline xattr flag of file A will be miss and xattr info
will be taken as blkaddr index.

Signed-off-by: Yunlei He 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: no need return value in restore summary process

2018-01-03T03:27:30+00:00

No need return value in restore summary process

Signed-off-by: Yunlei He 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: inject fault to kvmalloc

2018-01-03T03:27:29+00:00

This patch supports to inject fault into kvmalloc/kvzalloc.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: inject fault to kzalloc

2018-01-03T03:27:29+00:00

This patch introduces f2fs_kzalloc based on f2fs_kmalloc in order to
support error injection for kzalloc().

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: remove repeated f2fs_bug_on

2018-01-03T03:27:28+00:00

f2fs: remove repeated f2fs_bug_on which has already existed
      in function invalidate_blocks.

Signed-off-by: Zhikang Zhang 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: remove unused parameter

2018-01-03T03:27:27+00:00

Commit d260081ccf37 ("f2fs: change recovery policy of xattr node block")
removes the use of blkaddr, which is no longer used. So remove the
parameter.

Signed-off-by: Sheng Yong 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: fix concurrent problem for updating free bitmap

2018-01-03T03:27:27+00:00

alloc_nid_failed and scan_nat_page can be called at the same time,
and we haven't protected add_free_nid and update_free_nid_bitmap
with the same nid_list_lock. That could lead to

Thread A				Thread B
- __build_free_nids
 - scan_nat_page
  - add_free_nid
					- alloc_nid_failed
					 - update_free_nid_bitmap
  - update_free_nid_bitmap

scan_nat_page will clear the free bitmap since the nid is PREALLOC_NID,
but alloc_nid_failed needs to set the free bitmap. This results in
free nid with free bitmap cleared.
This patch update the bitmap under the same nid_list_lock in add_free_nid.
And use __GFP_NOFAIL to make sure to update status of free nid correctly.

Signed-off-by: Fan li 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim