From: Al Viro <viro@ZenIV.linux.org.uk>
To: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Eric Dumazet <eric.dumazet@gmail.com>,
Andi Kleen <andi@firstfloor.org>, Matthew Wilcox <matthew@wil.cx>,
Anton Blanchard <anton@samba.org>,
npiggin@kernel.dk, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org
Subject: Re: [Patch] VFS : mount lock scalability for files systems without mount point (WAS vfsmount lock issues on very large ppc64 box)
Date: Thu, 21 Jul 2011 21:40:42 +0100 [thread overview]
Message-ID: <20110721204042.GB31405@ZenIV.linux.org.uk> (raw)
In-Reply-To: <1311093158.2707.75.camel@schen9-DESK>
On Tue, Jul 19, 2011 at 09:32:38AM -0700, Tim Chen wrote:
> @@ -1193,6 +1193,7 @@ static void __exit cleanup_mtdchar(void)
> {
> unregister_mtd_user(&mtdchar_notifier);
> mntput(mtd_inode_mnt);
> + kern_unmount(mtd_inode_mnt);
Surely you want to merge that mntput() in there...
> +void kern_unmount(struct vfsmount *mnt)
> +{
> + /* release long term mount so mount point can be released */
> + if (!IS_ERR_OR_NULL(mnt)) {
> + mnt_make_shortterm(mnt);
> + mntput();
> + }
> +}
... and if you pass it the argument, it'll be much happier.
next prev parent reply other threads:[~2011-07-21 20:40 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-17 0:50 vfsmount lock issues on very large ppc64 box Anton Blanchard
2011-07-17 1:04 ` Matthew Wilcox
2011-07-17 8:46 ` Andi Kleen
2011-07-18 8:17 ` Eric Dumazet
2011-07-18 15:40 ` Christoph Hellwig
2011-07-18 15:51 ` Al Viro
2011-07-19 16:32 ` [Patch] VFS : mount lock scalability for files systems without mount point (WAS vfsmount lock issues on very large ppc64 box) Tim Chen
2011-07-21 20:40 ` Al Viro [this message]
2011-07-22 0:27 ` Tim Chen
2011-07-23 13:24 ` Christoph Hellwig
2011-07-25 22:39 ` Tim Chen
2011-07-25 22:51 ` Al Viro
2011-07-25 23:22 ` Tim Chen
2011-07-26 6:00 ` Eric Dumazet
2011-07-26 8:21 ` [PATCH] vfs: dont chain pipe/anon/socket on superblock s_inodes list Eric Dumazet
2011-07-26 9:03 ` Christoph Hellwig
2011-07-26 9:36 ` Eric Dumazet
2011-07-26 9:42 ` Christoph Hellwig
2011-07-26 10:43 ` Eric Dumazet
2011-07-26 11:49 ` Christoph Hellwig
2011-07-27 15:21 ` [PATCH] vfs: avoid taking locks if inode not in lists Eric Dumazet
2011-07-27 17:12 ` Andi Kleen
2011-07-27 20:44 ` Christoph Hellwig
2011-07-27 20:59 ` Andi Kleen
2011-07-27 21:01 ` Christoph Hellwig
2011-07-28 4:11 ` [PATCH] vfs: conditionally call inode_wb_list_del() Eric Dumazet
2011-07-28 4:41 ` [PATCH] vfs: avoid taking locks if inode not in lists Eric Dumazet
2011-07-28 4:55 ` [PATCH] vfs: avoid call to inode_lru_list_del() if possible Eric Dumazet
2011-07-18 16:41 ` vfsmount lock issues on very large ppc64 box Tim Chen
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