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Subject[PATCH] f2fs: fix wrong bfree and bavail
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This patch fixes bavail and bfree finally.

long f_bfree; /* free blocks in fs */
long f_bavail; /* free blocks avail to non-superuser */

So, bfree represents all the reserved blocks, while bavail does the space only
visible to normal user.

Fix: 3e6d0b4d9c1c ("f2fs: fix incorrect f_bfree calculation in ->statfs")
Cc: <stable@vger.kernel.org> # 4.8+
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/super.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 7e29db227910..17cca4cb93af 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -955,8 +955,8 @@ static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
buf->f_bsize = sbi->blocksize;

buf->f_blocks = total_count - start_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_bfree = user_block_count - valid_user_blocks(sbi);
+ buf->f_bavail = user_block_count - valid_user_blocks(sbi) - ovp_count -
sbi->reserved_blocks;

avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
--
2.14.0.rc1.383.gd1ce394fe2-goog
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