From: Dave Chinner <david@fromorbit.com>
To: Al Viro <viro@ZenIV.linux.org.uk>
Cc: linux-kernel@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>,
Neil Brown <neilb@suse.de>,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 06/10] [vfs] don't put symlink bodies in pagecache into highmem
Date: Fri, 20 Nov 2015 10:02:32 +1100 [thread overview]
Message-ID: <20151119230232.GF19199@dastard> (raw)
In-Reply-To: <1447801246-24588-6-git-send-email-viro@ZenIV.linux.org.uk>
On Tue, Nov 17, 2015 at 11:00:42PM +0000, Al Viro wrote:
> From: Al Viro <viro@zeniv.linux.org.uk>
>
> kmap() in page_follow_link_light() needed to go - allowing to hold
> an arbitrary number of kmaps for long is a great way to deadlocking
> the system.
>
> new helper (inode_nohigh(inode)) needs to be used for pagecache
inode_nohighmem() seems like a better name as it's self-documenting
at the call site.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
next prev parent reply other threads:[~2015-11-19 23:02 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-17 22:57 [PATCHSET] ->follow_link() without dropping from RCU mode Al Viro
2015-11-17 23:00 ` [PATCH 01/10] switch befs long symlinks to page_symlink_operations Al Viro
2015-11-17 23:00 ` [PATCH 02/10] logfs: don't duplicate page_symlink_inode_operations Al Viro
2015-11-17 23:00 ` [PATCH 03/10] udf: " Al Viro
2015-11-17 23:00 ` [PATCH 04/10] ufs: get rid of ->setattr() for symlinks Al Viro
2015-11-17 23:00 ` [PATCH 05/10] namei: page_getlink() and page_follow_link_light() are the same thing Al Viro
2015-11-17 23:00 ` [PATCH 06/10] [vfs] don't put symlink bodies in pagecache into highmem Al Viro
2015-11-19 23:02 ` Dave Chinner [this message]
2015-11-17 23:00 ` [PATCH 07/10] [vfs] replace ->follow_link() with new method that could stay in RCU mode Al Viro
2015-11-17 23:00 ` [PATCH 08/10] teach page_get_link() to work " Al Viro
2015-11-17 23:00 ` [PATCH 09/10] teach shmem_get_link() " Al Viro
2015-11-17 23:00 ` [PATCH 10/10] teach proc_self_get_link()/proc_thread_self_get_link() " Al Viro
2015-12-09 5:32 ` [PATCHSET v2] ->follow_link() without dropping from " Al Viro
2015-12-09 5:34 ` [PATCH v2 01/11] switch befs long symlinks to page_symlink_operations Al Viro
2015-12-09 5:34 ` [PATCH v2 02/11] logfs: don't duplicate page_symlink_inode_operations Al Viro
2015-12-09 5:34 ` [PATCH v2 03/11] udf: " Al Viro
2015-12-09 5:34 ` [PATCH v2 04/11] ufs: get rid of ->setattr() for symlinks Al Viro
2015-12-09 5:34 ` [PATCH v2 05/11] namei: page_getlink() and page_follow_link_light() are the same thing Al Viro
2015-12-09 5:34 ` [PATCH v2 06/11] don't put symlink bodies in pagecache into highmem Al Viro
2016-01-14 13:22 ` Tomeu Vizoso
2016-01-14 15:25 ` Al Viro
2016-01-14 15:58 ` Tomeu Vizoso
2016-01-14 16:23 ` Al Viro
2016-01-14 16:57 ` Tomeu Vizoso
2016-01-14 17:13 ` Al Viro
2016-01-14 19:15 ` Tomeu Vizoso
2016-01-14 21:02 ` Al Viro
2016-01-14 21:40 ` Linus Torvalds
2016-01-14 22:25 ` Al Viro
2016-01-14 23:33 ` Al Viro
2016-01-14 23:58 ` Linus Torvalds
2016-01-15 0:05 ` Al Viro
2015-12-09 5:34 ` [PATCH v2 07/11] replace ->follow_link() with new method that could stay in RCU mode Al Viro
2015-12-09 5:34 ` [PATCH v2 08/11] teach page_get_link() to work " Al Viro
2015-12-09 5:34 ` [PATCH v2 09/11] teach shmem_get_link() " Al Viro
2015-12-09 5:34 ` [PATCH v2 10/11] teach proc_self_get_link()/proc_thread_self_get_link() " Al Viro
2015-12-09 5:34 ` [PATCH v2 11/11] teach nfs_get_link() " Al Viro
2015-12-09 17:24 ` [PATCHSET v2] ->follow_link() without dropping from " Linus Torvalds
2015-12-09 18:23 ` Al Viro
2015-12-10 0:10 ` Al Viro
2015-12-10 2:40 ` Al Viro
2015-12-11 1:54 ` Al Viro
2015-12-11 7:49 ` Rasmus Villemoes
2015-12-11 23:16 ` Al Viro
2015-12-12 2:00 ` Al Viro
2015-12-13 18:43 ` Rasmus Villemoes
2015-12-13 3:47 ` Al Viro
2015-12-09 21:57 ` NeilBrown
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