linux-kernel - Re: [Bug #19082] fs/fs-writeback.c to dump

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Date:	Mon, 27 Sep 2010 03:40:17 +0400
From:	Pavel Vasilyev <pavel@...linux.ru>
To:	"Rafael J. Wysocki" <rjw@...k.pl>, linux-kernel@...r.kernel.org
Subject: Re: [Bug #19082] fs/fs-writeback.c to dump

В сообщении от Понедельник 27 сентября 2010 00:04:16 вы написали:
> This message has been generated automatically as a part of a summary report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.35.  Please verify if it still should be listed and let the
> tracking team know (either way).

I don't know, this bug or not :)

# view +73 fs/fs-writeback.c
...

static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
{
        struct super_block *sb = inode->i_sb;
        struct backing_dev_info *bdi = inode->i_mapping->backing_dev_info;

        /*
         * For inodes on standard filesystems, we use superblock's bdi. For
         * inodes on virtual filesystems, we want to use inode mapping's bdi
         * because they can possibly point to something useful (think about
         * block_dev filesystem).
         */

        if (sb->s_bdi && sb->s_bdi != &noop_backing_dev_info) {

               /* Some device inodes could play dirty tricks. Catch them... */

          WARN(bdi != sb->s_bdi && bdi_cap_writeback_dirty(bdi),
                        "Dirtiable inode bdi %s != sb bdi %s\n",
                        bdi->name, sb->s_bdi->name);
                return sb->s_bdi;
        }
        return bdi;
}




> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=19082
> Subject		: fs/fs-writeback.c to dump
> Submitter	: Pavel Vasilyev <pavel@...linux.ru>
> Date		: 2010-09-25 15:52 (2 days old)
> Message-ID	: <201009251952.58749.pavel@...linux.ru>
> References	: http://marc.info/?l=linux-kernel&m=128543035026659&w=2

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