Re: [RFC][PATCH] cifs: Fix cifs_writepages_region()

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To: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Subject: Re: [RFC][PATCH] cifs: Fix cifs_writepages_region()
From: David Howells <dhowells@xxxxxxxxxx>
Date: Fri, 24 Feb 2023 20:13:57 +0000
Cc: dhowells@xxxxxxxxxx, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Steve French <stfrench@xxxxxxxxxxxxx>, Vishal Moola <vishal.moola@xxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Paulo Alcantara <pc@xxxxxx>, Huang Ying <ying.huang@xxxxxxxxx>, Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>, Xin Hao <xhao@xxxxxxxxxxxxxxxxx>, linux-mm@xxxxxxxxx, mm-commits@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <Y/kFnhUM5hjWM2Ae@casper.infradead.org>
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References: <Y/kFnhUM5hjWM2Ae@casper.infradead.org> <Y/jhwuTCaOgOTLp2@casper.infradead.org> <2134430.1677240738@warthog.procyon.org.uk> <2009825.1677229488@warthog.procyon.org.uk> <CAHk-=whAAOVBrzwb2uMjCmdRrtudGesYj0tuqdUgi8X_gbw1jw@mail.gmail.com> <20230220135225.91b0f28344c01d5306c31230@linux-foundation.org> <2213409.1677249075@warthog.procyon.org.uk> <2385089.1677258941@warthog.procyon.org.uk>

Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote:

> I don't understand why waiting for fscache here is even the right thing
> to do.

Then why do we have to wait for PG_writeback to complete?

David

Follow-Ups:
- Re: [RFC][PATCH] cifs: Fix cifs_writepages_region()
  - From: David Howells
- Re: [RFC][PATCH] cifs: Fix cifs_writepages_region()
  - From: Linus Torvalds

References:
- Re: [RFC][PATCH] cifs: Fix cifs_writepages_region()
  - From: Matthew Wilcox
- Re: [RFC][PATCH] cifs: Fix cifs_writepages_region()
  - From: Matthew Wilcox
- Re: [GIT PULL] MM updates for 6.3-rc1
  - From: David Howells
- Re: [GIT PULL] MM updates for 6.3-rc1
  - From: David Howells
- Re: [GIT PULL] MM updates for 6.3-rc1
  - From: Linus Torvalds
- [GIT PULL] MM updates for 6.3-rc1
  - From: Andrew Morton
- [RFC][PATCH] cifs: Fix cifs_writepages_region()
  - From: David Howells
- Re: [RFC][PATCH] cifs: Fix cifs_writepages_region()
  - From: David Howells

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