linux.git/fs/f2fs/debug.c, branch v4.13

f2fs: show available_nids in f2fs/status

2017-05-03T17:04:57+00:00

This patch adds an entry in f2fs/status to show # of available nids.

Signed-off-by: Jaegeuk Kim

f2fs: add undiscard blocks stat

2017-04-19T18:00:45+00:00

This patch adds to account undiscard blocks.

Signed-off-by: Chao Yu

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: count discard command entry

2017-04-05T18:05:03+00:00

Adds to count discard command entry and show the number in debugfs,
also fix to add cost of discard command cache into total comsumed
memory footprint.

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

f2fs: show issued flush/discard count

2017-04-05T18:05:02+00:00

Show historical count of flush command and discard command.

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

f2fs: show the max number of volatile operations

2017-03-24T19:10:50+00:00

This patch adds to show the max number of volatile operations which are
conducting concurrently.

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

f2fs: calculate the f2fs_stat_info into base_mem

2017-03-22T02:34:36+00:00

The memory size of f2fs_stat_info also should be calculated.

Signed-off-by: Kinglong Mee 
Signed-off-by: Jaegeuk Kim

f2fs: skip scanning free nid bitmap of full NAT blocks

2017-03-20T14:00:17+00:00

This patch adds to account free nids for each NAT blocks, and while
scanning all free nid bitmap, do check count and skip lookuping in
full NAT block.

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

f2fs: introduce free nid bitmap

2017-02-27T18:07:47+00:00

In scenario of intensively node allocation, free nids will be ran out
soon, then it needs to stop to load free nids by traversing NAT blocks,
in worse case, if NAT blocks does not be cached in memory, it generates
IOs which slows down our foreground operations.

In order to speed up node allocation, in this patch we introduce a new
free_nid_bitmap array, so there is an bitmap table for each NAT block,
Once the NAT block is loaded, related bitmap cache will be switched on,
and bitmap will be set during traversing nat entries in NAT block, later
we can query and update nid usage status in memory completely.

With such implementation, I expect performance of node allocation can be
improved in the long-term after filesystem image is mounted.

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