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SubjectRe: linux-next: build failure after merge of the vfs tree
Hi all,

On Wed, 3 Oct 2018 10:32:22 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> After merging the vfs tree, today's linux-next build (x86_64 allmodconfig)
> failed like this:
>
> /home/sfr/next/next/fs/f2fs/super.c: In function 'f2fs_remount':
> /home/sfr/next/next/fs/f2fs/super.c:1589:16: error: 'MS_RDONLY' undeclared (first use in this function); did you mean 'IS_RDONLY'?
> if ((*flags & MS_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
> ^~~~~~~~~
> IS_RDONLY
>
> Caused by commit
>
> dcf8001d292b ("vfs: Suppress MS_* flag defs within the kernel unless explicitly enabled")
>
> interacting with commit
>
> f80f781514ef ("f2fs: checkpoint disabling")
>
> from the f2fs tree.
>
> I have added the following merge fix patch for today. If it is correct,
> I assume that it could be applied to f2fs tree as the the other uses of
> MS_RDONLY have already been changed to SB_RDONLY. (There is another
> use of MS_READONLY in this function that is already cleaned up in the
> vfs tree commit.)

Can this be applied to the f2fs tree?

> From: Stephen Rothwell <sfr@canb.auug.org.au>
> Date: Wed, 3 Oct 2018 10:27:04 +1000
> Subject: [PATCH] f2fs: update for MS_* flags mostly going away
>
> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
> ---
> fs/f2fs/super.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index 6ed77589ff2b..b612a9e4a35e 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -1586,7 +1586,7 @@ static int f2fs_remount(struct super_block *sb, int *flags,
> goto restore_opts;
> }
>
> - if ((*flags & MS_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
> + if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
> err = -EINVAL;
> f2fs_msg(sbi->sb, KERN_WARNING,
> "disabling checkpoint not compatible with read-only");
> --
> 2.18.0

--
Cheers,
Stephen Rothwell
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