[PATCH 8/9] btrfs: handle a NULL folio in extent_range_redirty_for_io
Christoph Hellwig
hch at lst.de
Wed Jan 18 08:42:47 PST 2023
On Wed, Jan 18, 2023 at 04:08:57PM +0000, Matthew Wilcox wrote:
> On Wed, Jan 18, 2023 at 10:43:28AM +0100, Christoph Hellwig wrote:
> > filemap_get_folio can return NULL, skip those cases.
>
> Hmm, I'm not sure that's true. We have one place that calls
> extent_range_redirty_for_io(), and it previously calls
> extent_range_clear_dirty_for_io() which has an explicit
>
> BUG_ON(!page); /* Pages should be in the extent_io_tree */
>
> so I'm going to say this one can't happen either. I haven't delved far
> enough into btrfs to figure out why it can't happen.
I'll drop this patch for now.
More information about the linux-afs
mailing list