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f2fs: report # of free inodes more precisely 

If the partition is small, we don't need to report total # of inodes including
hidden free nodes.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2017-06-21 20:55:55 -07:00
parent 34dc77ad74
commit 0cc091d0c8
1 changed files with 11 additions and 3 deletions
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14
fs/f2fs/super.c
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@ -680,6 +680,7 @@ static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
struct f2fs_sb_info *sbi = F2FS_SB(sb); struct f2fs_sb_info *sbi = F2FS_SB(sb);
u64 id = huge_encode_dev(sb->s_bdev->bd_dev); u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
block_t total_count, user_block_count, start_count, ovp_count; block_t total_count, user_block_count, start_count, ovp_count;
u64 avail_node_count;
total_count = le64_to_cpu(sbi->raw_super->block_count); total_count = le64_to_cpu(sbi->raw_super->block_count);
user_block_count = sbi->user_block_count; user_block_count = sbi->user_block_count;
@ -692,9 +693,16 @@ static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
buf->f_bfree = user_block_count - valid_user_blocks(sbi) + ovp_count; buf->f_bfree = user_block_count - valid_user_blocks(sbi) + ovp_count;
buf->f_bavail = user_block_count - valid_user_blocks(sbi); buf->f_bavail = user_block_count - valid_user_blocks(sbi);
buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
buf->f_ffree = min(buf->f_files - valid_node_count(sbi),
buf->f_bavail); if (avail_node_count > user_block_count) {
buf->f_files = user_block_count;
buf->f_ffree = buf->f_bavail;
} else {
buf->f_files = avail_node_count;
buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
buf->f_bavail);
}
buf->f_namelen = F2FS_NAME_LEN; buf->f_namelen = F2FS_NAME_LEN;
buf->f_fsid.val[0] = (u32)id; buf->f_fsid.val[0] = (u32)id;