linux.git/fs/f2fs/sysfs.c, branch v6.9

f2fs: add a proc entry show disk layout

2024-03-06T17:43:26+00:00

This patch adds the disk map of block address ranges configured by multiple
partitions.

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

f2fs: introduce SEGS_TO_BLKS/BLKS_TO_SEGS for cleanup

2024-03-04T18:18:26+00:00

Just cleanup, no functional change.

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

f2fs: use BLKS_PER_SEG, BLKS_PER_SEC, and SEGS_PER_SEC

2024-02-27T17:41:12+00:00

No functional change.

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

f2fs: show more discard status by sysfs

2023-12-26T21:07:26+00:00

The current pending_discard attr just only shows the discard_cmd_cnt
information. More discard status can be shown so that we can check
them through sysfs when needed.

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

f2fs: Constrain the modification range of dir_level in the sysfs

2023-12-26T21:06:32+00:00

The {struct f2fs_sb_info}->dir_level can be modified through the sysfs
interface, but its value range is not limited. If the value exceeds
MAX_DIR_HASH_DEPTH and the mount options include "noinline_dentry",
the following error will occur:
[root@fedora ~]# mount -o noinline_dentry /dev/sdb  /mnt/sdb/
[root@fedora ~]# echo 128 > /sys/fs/f2fs/sdb/dir_level
[root@fedora ~]# cd /mnt/sdb/
[root@fedora sdb]# mkdir test
[root@fedora sdb]# cd test/
[root@fedora test]# mkdir test
mkdir: cannot create directory 'test': Argument list too long

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

f2fs: sysfs: support discard_io_aware

2023-11-28T18:59:51+00:00

It gives a way to enable/disable IO aware feature for background
discard, so that we can tune background discard more precisely
based on undiscard condition. e.g. force to disable IO aware if
there are large number of discard extents, and discard IO may
always be interrupted by frequent common IO.

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

f2fs: fix to account cp stats correctly

2023-08-14T20:42:05+00:00

cp_foreground_calls sysfs entry shows total CP call count rather than
foreground CP call count, fix it.

Fixes: fc7100ea2a52 ("f2fs: Add f2fs stats to sysfs")
Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: fix to account gc stats correctly

2023-08-14T20:41:57+00:00

As reported, status debugfs entry shows inconsistent GC stats as below:

GC calls: 6008 (BG: 6161)
  - data segments : 3053 (BG: 3053)
  - node segments : 2955 (BG: 2955)

Total GC calls is larger than BGGC calls, the reason is:
- f2fs_stat_info.call_count accounts total migrated section count
by f2fs_gc()
- f2fs_stat_info.bg_gc accounts total call times of f2fs_gc() from
background gc_thread

Another issue is gc_foreground_calls sysfs entry shows total GC call
count rather than FGGC call count.

This patch changes as below for fix:
- account GC calls and migrated segment count separately
- support to account migrated section count if it enables large section
mode
- fix to show correct value in gc_foreground_calls sysfs entry

Fixes: fc7100ea2a52 ("f2fs: Add f2fs stats to sysfs")
Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: refactor struct f2fs_attr macro

2023-06-26T13:21:41+00:00

This patch provides a large number of variants of F2FS_RW_ATTR
and F2FS_RO_ATTR macros, reducing the number of parameters required
to initialize the f2fs_attr structure.

Reported-by: kernel test robot 
Link: https://lore.kernel.org/oe-kbuild-all/202304152234.wjaY3IYm-lkp@intel.com/
Signed-off-by: Yangtao Li 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: add sanity check for proc_mkdir

2023-05-08T18:18:04+00:00

Return -ENOMEM when proc_mkdir failed.

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