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From: Richard Weinberger <richard@nod.at>
To: Michal Hocko <mhocko@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Artem Bityutskiy <dedekind1@gmail.com>,
	David Woodhouse <dwmw2@infradead.org>,
	Brian Norris <computersforpeace@gmail.com>,
	Boris Brezillon <boris.brezillon@free-electrons.com>,
	Marek Vasut <marek.vasut@gmail.com>,
	Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>,
	"Theodore Ts'o" <tytso@mit.edu>,
	Andreas Dilger <adilger.kernel@dilger.ca>,
	Steven Whitehouse <swhiteho@redhat.com>,
	Bob Peterson <rpeterso@redhat.com>,
	Trond Myklebust <trond.myklebust@primarydata.com>,
	Anna Schumaker <anna.schumaker@netapp.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Philippe Ombredanne <pombredanne@nexb.com>,
	Kate Stewart <kstewart@linuxfoundation.org>,
	Mikulas Patocka <mpatocka@redhat.com>,
	linux-mtd@lists.infradead.org, linux-ext4@vger.kernel.org,
	cluster-devel@redhat.com, linux-nfs@vger.kernel.org,
	linux-mm@kvack.org
Subject: Re: vmalloc with GFP_NOFS
Date: Tue, 24 Apr 2018 21:10:08 +0200	[thread overview]
Message-ID: <1912881.zKmfqiQKhD@blindfold> (raw)
In-Reply-To: <20180424162712.GL17484@dhcp22.suse.cz>

[resending without html ...]

Am Dienstag, 24. April 2018, 18:27:12 CEST schrieb Michal Hocko:
> Hi,
> it seems that we still have few vmalloc users who perform GFP_NOFS
> allocation:
> drivers/mtd/ubi/io.c

UBI is not a big deal. We use it here like in UBIFS for debugging
when self-checks are enabled.

> fs/ext4/xattr.c
> fs/gfs2/dir.c
> fs/gfs2/quota.c
> fs/nfs/blocklayout/extent_tree.c
> fs/ubifs/debug.c
> fs/ubifs/lprops.c
> fs/ubifs/lpt_commit.c
> fs/ubifs/orphan.c

All users in UBIFS are debugging code and some error reporting.
No fast paths.
I think we can switch to prealloation + locking without much hassle.
I can prepare a patch.

Thanks,
//richard

WARNING: multiple messages have this Message-ID (diff)
From: Richard Weinberger <richard@nod.at>
To: Michal Hocko <mhocko@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Artem Bityutskiy <dedekind1@gmail.com>,
	David Woodhouse <dwmw2@infradead.org>,
	Brian Norris <computersforpeace@gmail.com>,
	Boris Brezillon <boris.brezillon@free-electrons.com>,
	Marek Vasut <marek.vasut@gmail.com>,
	Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>,
	Theodore Ts'o <tytso@mit.edu>,
	Andreas Dilger <adilger.kernel@dilger.ca>,
	Steven Whitehouse <swhiteho@redhat.com>,
	Bob Peterson <rpeterso@redhat.com>,
	Trond Myklebust <trond.myklebust@primarydata.com>,
	Anna Schumaker <anna.schumaker@netapp.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Philippe Ombredanne <pombredanne@nexb.com>,
	Kate Stewart <kstewart@linuxfoundation.org>,
	Mikulas Patocka <mpatocka@redhat.com>,
	linux-mtd@lists.infradead.org, linux-ext4@vger.k
Subject: Re: vmalloc with GFP_NOFS
Date: Tue, 24 Apr 2018 21:10:08 +0200	[thread overview]
Message-ID: <1912881.zKmfqiQKhD@blindfold> (raw)
In-Reply-To: <20180424162712.GL17484@dhcp22.suse.cz>

[resending without html ...]

Am Dienstag, 24. April 2018, 18:27:12 CEST schrieb Michal Hocko:
> Hi,
> it seems that we still have few vmalloc users who perform GFP_NOFS
> allocation:
> drivers/mtd/ubi/io.c

UBI is not a big deal. We use it here like in UBIFS for debugging
when self-checks are enabled.

> fs/ext4/xattr.c
> fs/gfs2/dir.c
> fs/gfs2/quota.c
> fs/nfs/blocklayout/extent_tree.c
> fs/ubifs/debug.c
> fs/ubifs/lprops.c
> fs/ubifs/lpt_commit.c
> fs/ubifs/orphan.c

All users in UBIFS are debugging code and some error reporting.
No fast paths.
I think we can switch to prealloation + locking without much hassle.
I can prepare a patch.

Thanks,
//richard

WARNING: multiple messages have this Message-ID (diff)
From: Richard Weinberger <richard@nod.at>
To: cluster-devel.redhat.com
Subject: [Cluster-devel] vmalloc with GFP_NOFS
Date: Tue, 24 Apr 2018 21:10:08 +0200	[thread overview]
Message-ID: <1912881.zKmfqiQKhD@blindfold> (raw)
In-Reply-To: <20180424162712.GL17484@dhcp22.suse.cz>

[resending without html ...]

Am Dienstag, 24. April 2018, 18:27:12 CEST schrieb Michal Hocko:
> Hi,
> it seems that we still have few vmalloc users who perform GFP_NOFS
> allocation:
> drivers/mtd/ubi/io.c

UBI is not a big deal. We use it here like in UBIFS for debugging
when self-checks are enabled.

> fs/ext4/xattr.c
> fs/gfs2/dir.c
> fs/gfs2/quota.c
> fs/nfs/blocklayout/extent_tree.c
> fs/ubifs/debug.c
> fs/ubifs/lprops.c
> fs/ubifs/lpt_commit.c
> fs/ubifs/orphan.c

All users in UBIFS are debugging code and some error reporting.
No fast paths.
I think we can switch to prealloation + locking without much hassle.
I can prepare a patch.

Thanks,
//richard



  parent reply	other threads:[~2018-04-24 19:10 UTC|newest]

Thread overview: 127+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-24 16:27 vmalloc with GFP_NOFS Michal Hocko
2018-04-24 16:27 ` [Cluster-devel] " Michal Hocko
2018-04-24 16:27 ` Michal Hocko
2018-04-24 16:27 ` Michal Hocko
2018-04-24 16:46 ` Mikulas Patocka
2018-04-24 16:46   ` [Cluster-devel] " Mikulas Patocka
2018-04-24 16:46   ` Mikulas Patocka
2018-04-24 16:55   ` Michal Hocko
2018-04-24 16:55     ` [Cluster-devel] " Michal Hocko
2018-04-24 16:55     ` Michal Hocko
2018-04-24 17:05     ` Mikulas Patocka
2018-04-24 17:05       ` [Cluster-devel] " Mikulas Patocka
2018-04-24 17:05       ` Mikulas Patocka
2018-04-24 18:35 ` Theodore Y. Ts'o
2018-04-24 18:35   ` [Cluster-devel] " Theodore Y. Ts'o
2018-04-24 18:35   ` Theodore Y. Ts'o
2018-04-24 19:25   ` Michal Hocko
2018-04-24 19:25     ` [Cluster-devel] " Michal Hocko
2018-04-24 19:25     ` Michal Hocko
2018-05-09 13:42     ` Michal Hocko
2018-05-09 13:42       ` [Cluster-devel] " Michal Hocko
2018-05-09 13:42       ` Michal Hocko
2018-05-09 14:13       ` David Sterba
2018-05-09 14:13         ` [Cluster-devel] " David Sterba
2018-05-09 14:13         ` David Sterba
2018-05-09 15:13       ` Darrick J. Wong
2018-05-09 15:13         ` [Cluster-devel] " Darrick J. Wong
2018-05-09 15:13         ` Darrick J. Wong
2018-05-09 16:24         ` Mike Rapoport
2018-05-09 16:24           ` [Cluster-devel] " Mike Rapoport
2018-05-09 16:24           ` Mike Rapoport
2018-05-09 21:06           ` Michal Hocko
2018-05-09 21:06             ` [Cluster-devel] " Michal Hocko
2018-05-09 21:06             ` Michal Hocko
2018-05-09 21:04         ` Michal Hocko
2018-05-09 21:04           ` [Cluster-devel] " Michal Hocko
2018-05-09 21:04           ` Michal Hocko
2018-05-09 22:02           ` Darrick J. Wong
2018-05-09 22:02             ` [Cluster-devel] " Darrick J. Wong
2018-05-09 22:02             ` Darrick J. Wong
2018-05-10  5:58             ` Michal Hocko
2018-05-10  5:58               ` [Cluster-devel] " Michal Hocko
2018-05-10  5:58               ` Michal Hocko
2018-05-10  7:18               ` Michal Hocko
2018-05-10  7:18                 ` [Cluster-devel] " Michal Hocko
2018-05-10  7:18                 ` Michal Hocko
2018-05-24 11:43   ` [PATCH] doc: document scope NOFS, NOIO APIs Michal Hocko
2018-05-24 11:43     ` Michal Hocko
2018-05-24 14:33     ` Shakeel Butt
2018-05-24 14:47       ` Michal Hocko
2018-05-24 16:37     ` Randy Dunlap
2018-05-25  7:52       ` Michal Hocko
2018-05-28  7:21         ` Nikolay Borisov
2018-05-29  8:22           ` Michal Hocko
2018-05-28 11:32         ` Vlastimil Babka
2018-05-24 20:52     ` Jonathan Corbet
2018-05-24 20:52       ` Jonathan Corbet
2018-05-25  8:11       ` Michal Hocko
2018-05-24 22:17     ` Dave Chinner
2018-05-24 23:25       ` Theodore Y. Ts'o
2018-05-25  8:16       ` Michal Hocko
2018-05-27 12:47         ` Mike Rapoport
2018-05-28  9:21           ` Michal Hocko
2018-05-28 16:10             ` Randy Dunlap
2018-05-29  8:21               ` Michal Hocko
2018-05-27 23:48         ` Dave Chinner
2018-05-28  9:19           ` Michal Hocko
2018-05-28 22:32             ` Dave Chinner
2018-05-29  8:18               ` Michal Hocko
2018-05-29  8:26     ` [PATCH v2] " Michal Hocko
2018-05-29  8:26       ` Michal Hocko
2018-05-29 10:22       ` Dave Chinner
2018-05-29 11:50       ` Mike Rapoport
2018-05-29 11:51       ` Jonathan Corbet
2018-05-29 11:51         ` Jonathan Corbet
2018-05-29 12:37         ` Michal Hocko
2018-07-17 12:49   ` vmalloc with GFP_NOFS Michal Hocko
2018-07-17 12:49     ` [Cluster-devel] " Michal Hocko
2018-07-17 12:49     ` Michal Hocko
2018-04-24 19:03 ` Richard Weinberger
2018-04-24 19:03   ` [Cluster-devel] " Richard Weinberger
2018-04-24 19:03   ` Richard Weinberger
2018-04-24 19:28   ` Michal Hocko
2018-04-24 19:28     ` [Cluster-devel] " Michal Hocko
2018-04-24 19:28     ` Michal Hocko
2018-04-24 22:18     ` Richard Weinberger
2018-04-24 22:18       ` [Cluster-devel] " Richard Weinberger
2018-04-24 22:18       ` Richard Weinberger
2018-04-24 23:09       ` Michal Hocko
2018-04-24 23:09         ` [Cluster-devel] " Michal Hocko
2018-04-24 23:09         ` Michal Hocko
2018-04-24 23:17         ` Mikulas Patocka
2018-04-24 23:17           ` [Cluster-devel] " Mikulas Patocka
2018-04-24 23:17           ` Mikulas Patocka
2018-04-24 23:25           ` Michal Hocko
2018-04-24 23:25             ` [Cluster-devel] " Michal Hocko
2018-04-24 23:25             ` Michal Hocko
2018-04-25 12:43             ` Mikulas Patocka
2018-04-25 12:43               ` [Cluster-devel] " Mikulas Patocka
2018-04-25 12:43               ` Mikulas Patocka
2018-04-25 14:45               ` Michal Hocko
2018-04-25 14:45                 ` [Cluster-devel] " Michal Hocko
2018-04-25 14:45                 ` Michal Hocko
2018-04-25 15:25                 ` Mikulas Patocka
2018-04-25 15:25                   ` [Cluster-devel] " Mikulas Patocka
2018-04-25 15:25                   ` Mikulas Patocka
2018-04-25 16:56                   ` Michal Hocko
2018-04-25 16:56                     ` [Cluster-devel] " Michal Hocko
2018-04-25 16:56                     ` Michal Hocko
2018-07-17 12:47   ` Michal Hocko
2018-07-17 12:47     ` [Cluster-devel] " Michal Hocko
2018-07-17 12:47     ` Michal Hocko
2018-04-24 19:05 ` Richard Weinberger
2018-04-24 19:05   ` [Cluster-devel] " Richard Weinberger
2018-04-24 19:05   ` Richard Weinberger
2018-04-24 19:10 ` Richard Weinberger [this message]
2018-04-24 19:10   ` [Cluster-devel] " Richard Weinberger
2018-04-24 19:10   ` Richard Weinberger
2018-04-24 19:26 ` Steven Whitehouse
2018-04-24 19:26   ` [Cluster-devel] " Steven Whitehouse
2018-04-24 19:26   ` Steven Whitehouse
2018-04-24 20:09   ` Michal Hocko
2018-04-24 20:09     ` [Cluster-devel] " Michal Hocko
2018-04-24 20:09     ` Michal Hocko
2018-07-17 12:50     ` Michal Hocko
2018-07-17 12:50       ` [Cluster-devel] " Michal Hocko
2018-07-17 12:50       ` Michal Hocko

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