lkml.org 
[lkml]   [2020]   [May]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [RFC PATCH 54/61] afs: Wait on PG_fscache before modifying/releasing a page
Date
Matthew Wilcox <willy@infradead.org> wrote:

> > PG_fscache is going to be used to indicate that a page is being written to
> > the cache, and that the page should not be modified or released until it's
> > finished.
> >
> > Make afs_invalidatepage() and afs_releasepage() wait for it.
>
> Well, why? Keeping a refcount on the page will prevent it from going
> away while it's being written to storage. And the fact that it's
> being written to this cache is no reason to delay the truncate of a file
> (is it?)

Won't that screw up ITER_MAPPING? Does that mean that ITER_MAPPING isn't
viable?

David

\
 
 \ /
  Last update: 2020-05-06 09:59    [W:0.416 / U:0.652 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site