From: David Howells <dhowells@redhat.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: dhowells@redhat.com, linux-afs@lists.infradead.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 05/11] afs: Fix to take ref on page when PG_private is set
Date: Wed, 28 Oct 2020 15:24:36 +0000 [thread overview]
Message-ID: <442540.1603898676@warthog.procyon.org.uk> (raw)
In-Reply-To: <20201028142041.GZ20115@casper.infradead.org>
Matthew Wilcox <willy@infradead.org> wrote:
> There's an efficiency question here that I can't answer ... how often do
> you call afs_write_begin() on a page which already has PagePrivate set?
That's a question only userspace can answer - but think shell scripts that do
lots of small appends.
David
next prev parent reply other threads:[~2020-10-28 22:27 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-28 14:09 [PATCH 00/11] AFS fixes [ver #2] David Howells
2020-10-28 14:09 ` [PATCH 01/11] afs: Fix copy_file_range() David Howells
2020-10-28 14:10 ` [PATCH 02/11] afs: Fix tracing deref-before-check David Howells
2020-10-28 14:10 ` [PATCH 03/11] afs: Fix a use after free in afs_xattr_get_acl() David Howells
2020-10-28 14:10 ` [PATCH 04/11] afs: Fix afs_launder_page to not clear PG_writeback David Howells
2020-10-28 14:10 ` [PATCH 05/11] afs: Fix to take ref on page when PG_private is set David Howells
2020-10-28 14:20 ` Matthew Wilcox
2020-10-28 15:24 ` David Howells [this message]
2020-10-28 14:10 ` [PATCH 06/11] afs: Fix page leak on afs_write_begin() failure David Howells
2020-10-28 14:10 ` [PATCH 07/11] afs: Fix where page->private is set during write David Howells
2020-10-28 14:10 ` [PATCH 08/11] afs: Wrap page->private manipulations in inline functions David Howells
2020-10-28 14:10 ` [PATCH 09/11] afs: Alter dirty range encoding in page->private David Howells
2020-10-28 14:10 ` [PATCH 10/11] afs: Fix afs_invalidatepage to adjust the dirty region David Howells
2020-10-28 14:11 ` [PATCH 11/11] afs: Fix dirty-region encoding on ppc32 with 64K pages David Howells
2020-10-28 14:34 ` Matthew Wilcox
2020-10-28 16:53 ` David Howells
2020-10-28 17:05 ` David Howells
2020-10-28 17:11 ` Matthew Wilcox
2020-10-28 17:27 ` David Howells
2020-10-28 22:22 [PATCH 00/11] AFS fixes [ver #3] David Howells
2020-10-28 22:23 ` [PATCH 05/11] afs: Fix to take ref on page when PG_private is set David Howells
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