From: <gregkh@suse•de>
To: ebiederm@xmission•com, bcrl@lhnet•ca, cornelia.huck@de•ibm.com,
eric.dumazet@gmail•com, gregkh@suse•de, kay.sievers@vrfy•org,
netdev@vger•kernel.org, serue@us•ibm.com, tj@kernel•org
Subject: patch sysfs-basic-support-for-multiple-super-blocks.patch added to gregkh-2.6 tree
Date: Thu, 29 Apr 2010 13:29:04 -0700 [thread overview]
Message-ID: <1272572944166@kroah.org> (raw)
In-Reply-To: <1269973889-25260-1-git-send-email-ebiederm@xmission.com>
This is a note to let you know that I've just added the patch titled
Subject: sysfs: Basic support for multiple super blocks
to my gregkh-2.6 tree. Its filename is
sysfs-basic-support-for-multiple-super-blocks.patch
This tree can be found at
http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/patches/
>From ebiederm@xmission•com Thu Apr 29 12:41:57 2010
From: "Eric W. Biederman" <ebiederm@xmission•com>
Date: Tue, 30 Mar 2010 11:31:24 -0700
Subject: sysfs: Basic support for multiple super blocks
To: Greg Kroah-Hartman <gregkh@suse•de>
Cc: Kay Sievers <kay.sievers@vrfy•org>, linux-kernel@vger•kernel.org, Tejun Heo <tj@kernel•org>, Cornelia Huck <cornelia.huck@de•ibm.com>, linux-fsdevel@vger•kernel.org, Eric Dumazet <eric.dumazet@gmail•com>, Benjamin LaHaise <bcrl@lhnet•ca>, Serge Hallyn <serue@us•ibm.com>, <netdev@vger•kernel.org>, "Eric W. Biederman" <ebiederm@xmission•com>
Message-ID: <1269973889-25260-1-git-send-email-ebiederm@xmission•com>
From: Eric W. Biederman <ebiederm@xmission•com>
Add all of the necessary bioler plate to support
multiple superblocks in sysfs.
Signed-off-by: Eric W. Biederman <ebiederm@xmission•com>
Acked-by: Serge Hallyn <serue@us•ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse•de>
---
fs/sysfs/mount.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++--
fs/sysfs/sysfs.h | 3 ++
2 files changed, 59 insertions(+), 2 deletions(-)
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -72,16 +72,70 @@ static int sysfs_fill_super(struct super
return 0;
}
+static int sysfs_test_super(struct super_block *sb, void *data)
+{
+ struct sysfs_super_info *sb_info = sysfs_info(sb);
+ struct sysfs_super_info *info = data;
+ int found = 1;
+ return found;
+}
+
+static int sysfs_set_super(struct super_block *sb, void *data)
+{
+ int error;
+ error = set_anon_super(sb, data);
+ if (!error)
+ sb->s_fs_info = data;
+ return error;
+}
+
static int sysfs_get_sb(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
- return get_sb_single(fs_type, flags, data, sysfs_fill_super, mnt);
+ struct sysfs_super_info *info;
+ struct super_block *sb;
+ int error;
+
+ error = -ENOMEM;
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ goto out;
+ sb = sget(fs_type, sysfs_test_super, sysfs_set_super, info);
+ if (IS_ERR(sb) || sb->s_fs_info != info)
+ kfree(info);
+ if (IS_ERR(sb)) {
+ kfree(info);
+ error = PTR_ERR(sb);
+ goto out;
+ }
+ if (!sb->s_root) {
+ sb->s_flags = flags;
+ error = sysfs_fill_super(sb, data, flags & MS_SILENT ? 1 : 0);
+ if (error) {
+ deactivate_locked_super(sb);
+ goto out;
+ }
+ sb->s_flags |= MS_ACTIVE;
+ }
+
+ simple_set_mnt(mnt, sb);
+ error = 0;
+out:
+ return error;
+}
+
+static void sysfs_kill_sb(struct super_block *sb)
+{
+ struct sysfs_super_info *info = sysfs_info(sb);
+
+ kill_anon_super(sb);
+ kfree(info);
}
static struct file_system_type sysfs_fs_type = {
.name = "sysfs",
.get_sb = sysfs_get_sb,
- .kill_sb = kill_anon_super,
+ .kill_sb = sysfs_kill_sb,
};
int __init sysfs_init(void)
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -114,6 +114,9 @@ struct sysfs_addrm_cxt {
/*
* mount.c
*/
+struct sysfs_super_info {
+};
+#define sysfs_info(SB) ((struct sysfs_super_info *)(SB->s_fs_info))
extern struct sysfs_dirent sysfs_root;
extern struct kmem_cache *sysfs_dir_cachep;
next prev parent reply other threads:[~2010-04-30 17:08 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-30 18:30 [PATCH 0/6] tagged sysfs support Eric W. Biederman
2010-03-30 18:31 ` [PATCH 1/6] sysfs: Basic support for multiple super blocks Eric W. Biederman
2010-03-30 19:23 ` Eric Dumazet
2010-03-30 23:50 ` [PATCH 7/6] sysfs: Remove double free sysfs_get_sb Eric W. Biederman
2010-03-31 5:01 ` [PATCH 1/6] sysfs: Basic support for multiple super blocks Serge E. Hallyn
2010-03-31 5:01 ` Serge E. Hallyn
2010-03-31 5:41 ` Tejun Heo
2010-03-31 5:51 ` Eric W. Biederman
2010-03-31 13:47 ` Serge E. Hallyn
2010-03-31 14:02 ` Eric W. Biederman
2010-04-05 7:45 ` Tejun Heo
2010-04-29 20:29 ` gregkh [this message]
2010-03-30 18:31 ` [PATCH 2/6] kobj: Add basic infrastructure for dealing with namespaces Eric W. Biederman
2010-04-29 20:29 ` patch kobj-add-basic-infrastructure-for-dealing-with-namespaces.patch added to gregkh-2.6 tree gregkh
2010-03-30 18:31 ` [PATCH 3/6] sysfs: Implement sysfs tagged directory support Eric W. Biederman
2010-03-31 2:43 ` Serge E. Hallyn
2010-03-31 3:38 ` Eric W. Biederman
2010-03-31 4:02 ` Serge E. Hallyn
2010-03-31 4:23 ` Eric W. Biederman
2010-03-31 4:53 ` Serge E. Hallyn
2010-03-31 6:49 ` Tejun Heo
2010-03-31 7:43 ` Eric W. Biederman
2010-03-31 8:17 ` Tejun Heo
2010-03-31 8:22 ` Tejun Heo
2010-03-31 9:39 ` Eric W. Biederman
2010-04-05 8:17 ` Tejun Heo
2010-04-29 20:29 ` patch sysfs-implement-sysfs-tagged-directory-support.patch added to gregkh-2.6 tree gregkh
2010-04-30 4:18 ` Tejun Heo
2010-04-30 4:45 ` Greg KH
2010-04-30 5:24 ` Eric W. Biederman
2010-04-30 5:37 ` Tejun Heo
2010-04-30 6:12 ` Tejun Heo
2010-04-30 14:29 ` Serge E. Hallyn
2010-04-30 15:22 ` Tejun Heo
2010-04-30 15:43 ` Serge E. Hallyn
2010-04-30 15:58 ` Greg KH
2010-03-30 18:31 ` [PATCH 4/6] sysfs: Add support for tagged directories with untagged members Eric W. Biederman
2010-04-29 20:29 ` patch sysfs-add-support-for-tagged-directories-with-untagged-members.patch added to gregkh-2.6 tree gregkh
2010-03-30 18:31 ` [PATCH 5/6] sysfs: Implement sysfs_delete_link Eric W. Biederman
2010-04-29 20:29 ` patch sysfs-implement-sysfs_delete_link.patch added to gregkh-2.6 tree gregkh
2010-03-30 18:31 ` [PATCH 6/6] driver core: Implement ns directory support for device classes Eric W. Biederman
2010-04-29 20:29 ` patch driver-core-implement-ns-directory-support-for-device-classes.patch added to gregkh-2.6 tree gregkh
2010-03-30 18:53 ` [PATCH 0/6] tagged sysfs support Kay Sievers
2010-03-30 23:04 ` Eric W. Biederman
2010-03-31 5:51 ` Kay Sievers
2010-03-31 6:25 ` Tejun Heo
2010-03-31 6:52 ` Eric W. Biederman
2010-04-03 0:58 ` Ben Hutchings
2010-04-03 8:35 ` Kay Sievers
2010-04-03 16:05 ` Ben Hutchings
2010-04-03 16:35 ` Kay Sievers
2010-03-31 17:21 ` Serge E. Hallyn
2010-03-31 18:09 ` Eric W. Biederman
2010-05-05 0:35 ` [PATCH 0/6] netns support in the kobject layer Eric W. Biederman
2010-05-06 20:04 ` Greg KH
2010-05-16 6:26 ` David Miller
2010-05-17 18:11 ` Greg KH
2010-05-17 20:58 ` Eric W. Biederman
2010-05-17 21:03 ` Greg KH
2010-05-17 22:37 ` Eric W. Biederman
2010-05-17 22:54 ` Greg KH
2010-05-17 23:48 ` David Miller
2010-05-18 4:08 ` Greg KH
2010-05-18 4:21 ` David Miller
2010-05-05 0:36 ` [PATCH 1/6] kobject: Send hotplug events in all network namespaces Eric W. Biederman
2010-05-20 18:10 ` patch kobject-send-hotplug-events-in-all-network-namespaces.patch added to gregkh-2.6 tree gregkh
2010-05-05 0:36 ` [PATCH 2/6] netns: Teach network device kobjects which namespace they are in Eric W. Biederman
2010-05-05 15:17 ` Serge E. Hallyn
2010-05-05 19:56 ` Eric W. Biederman
2010-05-05 22:01 ` Serge E. Hallyn
2010-05-17 4:59 ` [PATCH 7/6] net/sysfs: Fix the bitrot in network device kobject namespace support Eric W. Biederman
2010-05-17 5:07 ` David Miller
2010-05-20 18:10 ` patch netns-teach-network-device-kobjects-which-namespace-they-are-in.patch added to gregkh-2.6 tree gregkh
2010-05-05 0:36 ` [PATCH 3/6] netlink: Implment netlink_broadcast_filtered Eric W. Biederman
2010-05-20 18:10 ` patch netlink-implment-netlink_broadcast_filtered.patch added to gregkh-2.6 tree gregkh
2010-05-05 0:36 ` [PATCH 4/6] kobj: Send hotplug events in the proper namespace Eric W. Biederman
2010-05-20 18:10 ` patch kobj-send-hotplug-events-in-the-proper-namespace.patch added to gregkh-2.6 tree gregkh
2010-05-05 0:36 ` [PATCH 5/6] hotplug: netns aware uevent_helper Eric W. Biederman
2010-05-20 18:10 ` patch hotplug-netns-aware-uevent_helper.patch added to gregkh-2.6 tree gregkh
2010-05-05 0:36 ` [PATCH 6/6] net: Expose all network devices in a namespaces in sysfs Eric W. Biederman
2010-05-20 18:10 ` patch net-expose-all-network-devices-in-a-namespaces-in-sysfs.patch added to gregkh-2.6 tree gregkh
2010-05-20 17:47 ` [PATCH 0/6] tagged sysfs support Greg KH
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