linux.git/fs/f2fs/segment.h, branch v4.12

Merge branch 'akpm' (patches from Andrew)

2017-05-09T01:17:56+00:00

Merge more updates from Andrew Morton:

 - the rest of MM

 - various misc things

 - procfs updates

 - lib/ updates

 - checkpatch updates

 - kdump/kexec updates

 - add kvmalloc helpers, use them

 - time helper updates for Y2038 issues. We're almost ready to remove
   current_fs_time() but that awaits a btrfs merge.

 - add tracepoints to DAX

* emailed patches from Andrew Morton : (114 commits)
  drivers/staging/ccree/ssi_hash.c: fix build with gcc-4.4.4
  selftests/vm: add a test for virtual address range mapping
  dax: add tracepoint to dax_insert_mapping()
  dax: add tracepoint to dax_writeback_one()
  dax: add tracepoints to dax_writeback_mapping_range()
  dax: add tracepoints to dax_load_hole()
  dax: add tracepoints to dax_pfn_mkwrite()
  dax: add tracepoints to dax_iomap_pte_fault()
  mtd: nand: nandsim: convert to memalloc_noreclaim_*()
  treewide: convert PF_MEMALLOC manipulations to new helpers
  mm: introduce memalloc_noreclaim_{save,restore}
  mm: prevent potential recursive reclaim due to clearing PF_MEMALLOC
  mm/huge_memory.c: deposit a pgtable for DAX PMD faults when required
  mm/huge_memory.c: use zap_deposited_table() more
  time: delete CURRENT_TIME_SEC and CURRENT_TIME
  gfs2: replace CURRENT_TIME with current_time
  apparmorfs: replace CURRENT_TIME with current_time()
  lustre: replace CURRENT_TIME macro
  fs: ubifs: replace CURRENT_TIME_SEC with current_time
  fs: ufs: use ktime_get_real_ts64() for birthtime
  ...

fs: f2fs: use ktime_get_real_seconds for sit_info times

2017-05-09T00:15:15+00:00

CURRENT_TIME_SEC is not y2038 safe.

Replace use of CURRENT_TIME_SEC with ktime_get_real_seconds in segment
timestamps used by GC algorithm including the segment mtime timestamps.

Link: http://lkml.kernel.org/r/1491613030-11599-2-git-send-email-deepa.kernel@gmail.com
Signed-off-by: Deepa Dinamani 
Reviewed-by: Arnd Bergmann 
Cc: Jaegeuk Kim 
Cc: Chao Yu 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

f2fs: reconstruct code to write a data page

2017-05-03T04:19:46+00:00

This patch introduces encrypt_one_page which encrypts one data page before
submit_bio, and change the use of need_inplace_update.

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

f2fs: skip encrypted inode in ASYNC IPU policy

2017-04-24T20:13:24+00:00

Async request may be throttled in block layer, so page for async may keep WRITE_BACK
for a long time.

For encrytped inode, we need wait on page writeback no matter if the device supports
BDI_CAP_STABLE_WRITES. This may result in a higher waiting page writeback time for
async encrypted inode page.

This patch skips IPU for encrypted inode's updating write.

Signed-off-by: Hou Pengyang 
Signed-off-by: Jaegeuk Kim

f2fs: add ioctl to flush data from faster device to cold area

2017-04-24T19:55:41+00:00

This patch adds an ioctl to flush data in faster device to cold area. User can
give device number and number of segments to move. It doesn't move it if there
is only one device.

The parameter looks like:

struct f2fs_flush_device {
	u32 dev_num;		/* device number to flush */
	u32 segments;		/* # of segments to flush */
};

Signed-off-by: Jaegeuk Kim

f2fs: introduce async IPU policy

2017-04-19T18:00:46+00:00

This patch introduces an ASYNC IPU policy.

Under senario of large # of async updating(e.g. log writing in Android),
disk would be seriously fragmented, and higher frequent gc would be triggered.

This patch uses IPU to rewrite the async update writting, since async is
NOT sensitive to io latency.

Signed-off-by: Hou Pengyang

f2fs: clean up some macros in terms of GET_SEGNO

2017-04-11T02:48:13+00:00

This patch cleans several macros by introducing:
- BLKS_PER_SEC
- GET_SEC_FROM_SEG
- GET_SEG_FROM_SEC
- GET_ZONE_FROM_SEC
- GET_ZONE_FROM_SEG

Signed-off-by: Jaegeuk Kim

f2fs: clean up get_valid_blocks with consistent parameter

2017-04-11T02:48:12+00:00

This patch cleans up get_valid_blocks, which has no functional change.

Signed-off-by: Jaegeuk Kim

f2fs: use segment number for get_valid_blocks

2017-04-11T02:48:11+00:00

This patch fixes to submit a segment number for get_valid_blocks.

Signed-off-by: Jaegeuk Kim

f2fs: guard macro variables with braces

2017-04-11T02:48:10+00:00

Add braces around variables used within macros for those make sense
to do it. Many of the macros in f2fs already do this. What this commit
doesn't do is anything that changes line# as a result of adding braces,
which usually affects the binary via __LINE__.

Confirmed no diff in fs/f2fs/f2fs.ko before/after this commit on x86_64,
to make sure this has no functional change as well as there's been no
unexpected side effect due to callers' arithmetics within the existing
code.

Signed-off-by: Tomohiro Kusumi 
Signed-off-by: Jaegeuk Kim