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f2fs: show # of dirty segments via sysfs 

This patch adds one sysfs entry to show # of dirty segments which can be
used for gc timing by user.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2017-10-24 09:46:54 +02:00
parent 1f227a3e21
commit 8f1572f7ce
1 changed files with 9 additions and 0 deletions
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9
fs/f2fs/sysfs.c
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@ -63,6 +63,13 @@ static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
return NULL;
}
static ssize_t dirty_segments_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%llu\n",
(unsigned long long)(dirty_segments(sbi)));
}
static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
@ -278,6 +285,7 @@ F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
#endif
F2FS_GENERAL_RO_ATTR(dirty_segments);
F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
F2FS_GENERAL_RO_ATTR(features);
@ -320,6 +328,7 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(inject_rate),
ATTR_LIST(inject_type),
#endif
ATTR_LIST(dirty_segments),
ATTR_LIST(lifetime_write_kbytes),
ATTR_LIST(features),
ATTR_LIST(reserved_blocks),