Re: [f2fs-dev] [PATCH] f2fs: do not support mmap write for large folio

[Jaegeuk Kim <jaegeuk@kernel.org>]

On 04/06, Daeho Jeong wrote:
> On Mon, Apr 6, 2026 at 8:56 AM Jaegeuk Kim via Linux-f2fs-devel
> <linux-f2fs-devel@lists.sourceforge.net> wrote:
> >
> > Let's check mmmap writes onto the large folio.
> 
> typo? mmap?
> 
> >
> > Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> > ---
> >  fs/f2fs/file.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
> > index 2c4880f24b54..edfc3a374c40 100644
> > --- a/fs/f2fs/file.c
> > +++ b/fs/f2fs/file.c
> > @@ -82,7 +82,7 @@ static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
> >         int err = 0;
> >         vm_fault_t ret;
> >
> > -       if (unlikely(IS_IMMUTABLE(inode)))
> 
> Did you remove this intentionally?

Ah, let me remain it back to isolate the change.

> 
> > +       if (mapping_large_folio_support(inode->i_mapping))
> >                 return VM_FAULT_SIGBUS;
> >
> >         if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
> > --
> > 2.53.0.1213.gd9a14994de-goog
> >
> >
> >
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