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

Merge tag 'f2fs-for-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

2018-01-31T03:07:32+00:00

Pull f2fs updates from Jaegeuk Kim:
 "In this round, we've followed up to support some generic features such
  as cgroup, block reservation, linking fscrypt_ops, delivering
  write_hints, and some ioctls. And, we could fix some corner cases in
  terms of power-cut recovery and subtle deadlocks.

  Enhancements:
   - bitmap operations to handle NAT blocks
   - readahead to improve readdir speed
   - switch to use fscrypt_*
   - apply write hints for direct IO
   - add reserve_root=%u,resuid=%u,resgid=%u to reserve blocks for root/uid/gid
   - modify b_avail and b_free to consider root reserved blocks
   - support cgroup writeback
   - support FIEMAP_FLAG_XATTR for fibmap
   - add F2FS_IOC_PRECACHE_EXTENTS to pre-cache extents
   - add F2FS_IOC_{GET/SET}_PIN_FILE to pin LBAs for data blocks
   - support inode creation time

  Bug fixs:
   - sysfile-based quota operations
   - memory footprint accounting
   - allow to write data on partial preallocation case
   - fix deadlock case on fallocate
   - fix to handle fill_super errors
   - fix missing inode updates of fsync'ed file
   - recover renamed file which was fsycn'ed before
   - drop inmemory pages in corner error case
   - keep last_disk_size correctly
   - recover missing i_inline flags during roll-forward

  Various clean-up patches were added as well"

* tag 'f2fs-for-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (72 commits)
  f2fs: support inode creation time
  f2fs: rebuild sit page from sit info in mem
  f2fs: stop issuing discard if fs is readonly
  f2fs: clean up duplicated assignment in init_discard_policy
  f2fs: use GFP_F2FS_ZERO for cleanup
  f2fs: allow to recover node blocks given updated checkpoint
  f2fs: recover some i_inline flags
  f2fs: correct removexattr behavior for null valued extended attribute
  f2fs: drop page cache after fs shutdown
  f2fs: stop gc/discard thread after fs shutdown
  f2fs: hanlde error case in f2fs_ioc_shutdown
  f2fs: split need_inplace_update
  f2fs: fix to update last_disk_size correctly
  f2fs: kill F2FS_INLINE_XATTR_ADDRS for cleanup
  f2fs: clean up error path of fill_super
  f2fs: avoid hungtask when GC encrypted block if io_bits is set
  f2fs: allow quota to use reserved blocks
  f2fs: fix to drop all inmem pages correctly
  f2fs: speed up defragment on sparse file
  f2fs: support F2FS_IOC_PRECACHE_EXTENTS
  ...

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: split need_inplace_update

2018-01-22T22:56:53+00:00

This patch splits need_inplace_update to two functions:
a. should_update_inplace() includes all conditions that we must use IPU.
b. should_update_outplace() includes all conditions that we must use OPU.

So that, in f2fs_ioc_set_pin_file() and f2fs_defragment_range(), we can
use corresponding function to check whether we can trigger OPU/IPU or not.

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

f2fs: fix to update last_disk_size correctly

2018-01-22T22:56:52+00:00

This patch fixes to update last_disk_size only when writing out page
successfully.

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

f2fs: kill F2FS_INLINE_XATTR_ADDRS for cleanup

2018-01-22T22:56:51+00:00

Use get_inline_xattr_addrs directly instead of F2FS_INLINE_XATTR_ADDRS.

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

f2fs: fix to drop all inmem pages correctly

2018-01-22T22:56:47+00:00

In commit 57864ae5ce3a ("f2fs: limit # of inmemory pages"), we have
limited memory footprint of all inmem pages with 20% of total memory,
otherwise, if we exceed the threshold, we will try to drop all inmem
pages to avoid excessive memory pressure resulting in performance
regression.

But in some unrelated error paths, we will also drop all inmem pages,
which should be wrong, fix it in this patch.

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

f2fs: speed up defragment on sparse file

2018-01-22T22:56:46+00:00

We have supported to get next page offset with valid mapping crossing
hole in f2fs_map_blocks, utilizing it to speed up defragment on sparse
file.

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

f2fs: support F2FS_IOC_PRECACHE_EXTENTS

2018-01-22T22:56:45+00:00

This patch introduces a new ioctl F2FS_IOC_PRECACHE_EXTENTS to precache
extent info like ext4, in order to gain better performance during
triggering AIO by eliminating synchronous waiting of mapping info.

Referred commit: 7869a4a6c5ca ("ext4: add support for extent pre-caching")

In addition, with newly added extent precache abilitiy, this patch add
to support FIEMAP_FLAG_CACHE in ->fiemap.

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

f2fs: add an ioctl to disable GC for specific file

2018-01-22T22:56:35+00:00

This patch gives a flag to disable GC on given file, which would be useful, when
user wants to keep its block map. It also conducts in-place-update for dontmove
file.

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

f2fs: support FIEMAP_FLAG_XATTR

2018-01-19T06:09:11+00:00

This patch enables ->fiemap to handle FIEMAP_FLAG_XATTR flag for xattr
mapping info lookup purpose.

It makes f2fs passing generic/425 test in fstest.

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