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authorJaegeuk Kim <jaegeuk@kernel.org>2017-06-22 06:55:55 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2017-07-07 20:34:40 +0300
commit0cc091d0c8c34092c471fb5ae7335d075d08c324 (patch)
treecf9186d45d44cab1f4bcef57e8eb9c4c9b6f662d /fs/f2fs/super.c
parent34dc77ad74368707f0f51f42536e38e6ef30ff22 (diff)
downloadlinux-0cc091d0c8c34092c471fb5ae7335d075d08c324.tar.xz
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>
Diffstat (limited to 'fs/f2fs/super.c')
-rw-r--r--fs/f2fs/super.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 8e39b850bfc0..3da6fb276f8b 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -680,6 +680,7 @@ static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
struct f2fs_sb_info *sbi = F2FS_SB(sb);
u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
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);
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_bavail = user_block_count - valid_user_blocks(sbi);
- buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
- buf->f_ffree = min(buf->f_files - valid_node_count(sbi),
- buf->f_bavail);
+ avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
+
+ 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_fsid.val[0] = (u32)id;