f2fs: fix incorrect free inode count in ->statfs

PATCH New Chao Yu 1 participant 1 message Nov 18, 2016 F2FS file system

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Chao Yu

author maintainer

2016-11-18 14:27 UTC #0 lore raw

PATCH 1/1 f2fs: fix incorrect free inode count in ->statfs

From: Chao Yu <[email protected]>

While calculating inode count that we can create at most in the left space, we should consider space which data/node blocks occupied, since we create data/node mixly in main area. So fix the wrong calculation in ->statfs.

Signed-off-by Chao Yu <[email protected]>

---
 fs/f2fs/super.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

fs/f2fs/super.c +2 -1

index 4ccbb86..2852a0b 100644
@@ -852,7 +852,8 @@ static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
 	buf->f_bavail = user_block_count - valid_user_blocks(sbi);
 
 	buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
-	buf->f_ffree = buf->f_files - valid_inode_count(sbi);
+	buf->f_ffree = min(buf->f_files - valid_node_count(sbi),
+							buf->f_bavail);
 
 	buf->f_namelen = F2FS_NAME_LEN;
 	buf->f_fsid.val[0] = (u32)id;

Signature · 1 line

2.10.1