On 09/06, Chao Yu wrote: > On 2017/9/6 5:06, Jaegeuk Kim wrote: > > 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@xxxxxxxxxxxxxxx> # 4.8+ > > Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx> > > --- > > 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 - > > set_cp(user_block_count, ((get_cp(free_segment_count) + 6 - > get_cp(overprov_segment_count)) * c.blks_per_seg)); > > As we calculated in mkfs, we have removed ovp_count in user_block_count, so > shouldn't we add ovp_count for f_bfree here? Hehe, I already dropped this. :P It seems like something wrong with df in android. > > Thanks, > > > sbi->reserved_blocks; > > > > avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; > >