Original Message
Subject: Re: [PATCH v5 0/9] btrfs: Fix freeze/sysfs deadlock in better
method.
From: Miao Xie
To: , Qu Wenruo ,
Date: 2015年01月31日 10:30
On Fri, 30 Jan 2015 20:17:49 +0100, David Sterba wrote:
On Fri, Jan 30, 2015 at 05:20:45PM +0800, Qu Wenruo wrote
On Fri, 30 Jan 2015 20:17:49 +0100, David Sterba wrote:
> On Fri, Jan 30, 2015 at 05:20:45PM +0800, Qu Wenruo wrote:
>> [Use VFS protect for sysfs change]
>> The 6th patch will introduce a new help function sb_want_write() to
>> claim write permission to a superblock.
>> With this, we are able to d
On Fri, Jan 30, 2015 at 05:20:45PM +0800, Qu Wenruo wrote:
> [Use VFS protect for sysfs change]
> The 6th patch will introduce a new help function sb_want_write() to
> claim write permission to a superblock.
> With this, we are able to do write protection like mnt_want_write() but
> only needs to e
Patchset to solve the previous found freeze/sysfs deadlock.
Unlike previous pending_changes, which uses transaction commits to
ensure mount option doesn't change during transaction.
This idea is great in concept, but will introduce extra and somewhat
duplicated ro/freeze check, and the original sy
