On Wed, Sep 12, 2018 at 08:57:16AM +0900, Wang Shilong wrote: > diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c > index a7074115d6f6..f81102bd3203 100644 > --- a/fs/ext4/ioctl.c > +++ b/fs/ext4/ioctl.c > @@ -339,19 +339,14 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid) > if (projid_eq(kprojid, EXT4_I(inode)->i_projid)) > return 0; > > - err = mnt_want_write_file(filp); > - if (err) > - return err; > - A huge part of this patch is dropping the calls to mnt_want_write_file() and mnt_drop_write_file(). What's the justification for doing this? The use of mnt_want_write_file() looks necessary to me... - Ted
