From: Pekka Enberg <penberg@kernel.org>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Cong Wang <amwang@redhat.com>,
linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
Christoph Hellwig <hch@lst.de>, Hugh Dickins <hughd@google.com>,
Dave Hansen <dave@linux.vnet.ibm.com>,
Lennart Poettering <lennart@poettering.net>,
Kay Sievers <kay.sievers@vrfy.org>,
linux-mm@kvack.org
Subject: Re: [V3 PATCH 1/2] tmpfs: add fallocate support
Date: Wed, 23 Nov 2011 23:11:26 +0200 [thread overview]
Message-ID: <CAOJsxLH2foaRHYoPgRufu_J8B-YEvQ8aJNuQqHOPNj9YFvAubw@mail.gmail.com> (raw)
In-Reply-To: <CAHGf_=rOYkEGHakyHpihopMg2VtVfDV7XvC_QGs_kj6HgDmBRA@mail.gmail.com>
On Wed, Nov 23, 2011 at 9:59 PM, KOSAKI Motohiro
<kosaki.motohiro@jp.fujitsu.com> wrote:
>> +
>> + goto unlock;
>> +
>> +undo:
>> + while (index > start) {
>> + shmem_truncate_page(inode, index);
>> + index--;
>
> Hmmm...
> seems too aggressive truncate if the file has pages before starting fallocate.
> but I have no idea to make better undo. ;)
Why do we need to undo anyway?
Pekka
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next prev parent reply other threads:[~2011-11-23 21:11 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-23 8:53 Cong Wang
2011-11-23 8:53 ` [PATCH 2/2] fs: wire up .truncate_range and .fallocate Cong Wang
2011-11-23 10:38 ` Christoph Hellwig
2011-11-23 19:16 ` Hugh Dickins
2011-11-23 9:06 ` [V3 PATCH 1/2] tmpfs: add fallocate support Pekka Enberg
2011-11-23 19:07 ` Hugh Dickins
2011-11-24 3:18 ` Cong Wang
2011-11-23 19:59 ` KOSAKI Motohiro
2011-11-23 21:11 ` Pekka Enberg [this message]
2011-11-23 22:20 ` Hugh Dickins
2011-11-24 3:15 ` Cong Wang
2011-11-24 1:52 ` KAMEZAWA Hiroyuki
2011-11-24 2:46 ` KOSAKI Motohiro
2011-11-24 3:01 ` KAMEZAWA Hiroyuki
2011-11-24 3:22 ` Cong Wang
2011-11-24 4:23 ` KAMEZAWA Hiroyuki
2011-11-24 5:52 ` Cong Wang
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