lkml.org 
[lkml]   [2023]   [Jan]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/5] mm: compaction: Remove redundant VM_BUG_ON() in compact_zone()
On Tue, Jan 10, 2023 at 03:25:32PM -0800, Andrew Morton wrote:
> On Tue, 10 Jan 2023 13:37:57 +0000 Matthew Wilcox <willy@infradead.org> wrote:
>
> > On Tue, Jan 10, 2023 at 09:36:18PM +0800, Baolin Wang wrote:
> > > The compaction_suitable() will never return values other than COMPACT_SUCCESS,
> > > COMPACT_SKIPPED and COMPACT_CONTINUE, so after validation of COMPACT_SUCCESS
> > > and COMPACT_SKIPPED, we will never hit other unexpected case. Thus remove
> > > the redundant VM_BUG_ON() validation for the return values of compaction_suitable().
> >
> > I don't understand why we'd remove this check.
>
> Well, just from code inspection it serves no purpose.
>
> Such an assertion might be useful during early code development, but I
> think we can consider compaction_suitable() to adequately debugged by
> now?

What if compaction_suitable() is modified to return another value?
This seems like a relatively innocuous check.

\
 
 \ /
  Last update: 2023-03-26 23:35    [W:0.046 / U:0.200 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site