system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-15 15:59:15 +00:00
Code Issues Packages Projects Releases Wiki Activity

ext4: reflect mb_optimize_scan value in options file

Browse source 
Add support to display the mb_optimize_scan value in
/proc/fs/ext4/<dev>/options file. The option is only
displayed when the value is non default.

Signed-off-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Link: https://lore.kernel.org/r/20220704054603.21462-1-ojaswin@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Ojaswin Mujoo 2022-07-04 11:16:03 +05:30 committed by Theodore Ts'o
parent b24e77ef1c
commit 3fa5d23e68
1 changed files with 9 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
fs/ext4/super.c
View file

@ -3011,6 +3011,15 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
} else if (test_opt2(sb, DAX_INODE)) {
SEQ_OPTS_PUTS("dax=inode");
}
if (sbi->s_groups_count >= MB_DEFAULT_LINEAR_SCAN_THRESHOLD &&
!test_opt2(sb, MB_OPTIMIZE_SCAN)) {
SEQ_OPTS_PUTS("mb_optimize_scan=0");
} else if (sbi->s_groups_count < MB_DEFAULT_LINEAR_SCAN_THRESHOLD &&
test_opt2(sb, MB_OPTIMIZE_SCAN)) {
SEQ_OPTS_PUTS("mb_optimize_scan=1");
}
ext4_show_quota_options(seq, sb);
return 0;
}