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sysfs is now completely out of driver/module lifetime game. After
deletion, a sysfs node doesn't access anything outside sysfs proper,
so there's no reason to hold onto the attribute owners. Note that
often the wrong modules were accounted for as owners leading to
accessing removed modules.
This patch kills now unnecessary attribute->owner. Note that with
this change, userland holding a sysfs node does not prevent the
backing module from being unloaded.
For more info regarding lifetime rule cleanup, please read the
following message.
http://article.gmane.org/gmane.linux.kernel/510293
(tweaked by Greg to not delete the field just yet, to make it easier to
merge things properly.)
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Some of the sysfs changes inadvertantly broke the simple runtime debug log
filtering employed in ocfs2. Fix this by properly exporting the masklog
category filter names.
Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Fix gcc warning and Oops that it causes:
fs/ocfs2/cluster/masklog.c:161: warning: assignment from incompatible pointer type
[ 2776.204120] OCFS2 Node Manager 1.3.3
[ 2776.211729] BUG: spinlock bad magic on CPU#0, modprobe/4424
[ 2776.214269] lock: ffff810021c8fe18, .magic: ffffffff, .owner: /6394416, .owner_cpu: 0
[ 2776.217864] [ 2776.217865] Call Trace:
[ 2776.219662] [<ffffffff803426c8>] spin_bug+0x9e/0xe9
[ 2776.221921] [<ffffffff803427bf>] _raw_spin_lock+0x23/0xf9
[ 2776.224417] [<ffffffff8051acf4>] _spin_lock+0x9/0xb
[ 2776.226676] [<ffffffff8033c3b1>] kobject_shadow_add+0x98/0x1ac
[ 2776.229367] [<ffffffff8033c4d0>] kobject_add+0xb/0xd
[ 2776.231665] [<ffffffff8033c4df>] kset_add+0xd/0xf
[ 2776.233845] [<ffffffff8033c5a6>] kset_register+0x23/0x28
[ 2776.236309] [<ffffffff8808ccb7>] :ocfs2_nodemanager:mlog_sys_init+0x68/0x6d
[ 2776.239518] [<ffffffff8808ccee>] :ocfs2_nodemanager:o2cb_sys_init+0x32/0x4a
[ 2776.242726] [<ffffffff880b80a6>] :ocfs2_nodemanager:init_o2nm+0xa6/0xd5
[ 2776.245772] [<ffffffff8025266c>] sys_init_module+0x1471/0x15d2
[ 2776.248465] [<ffffffff8033f250>] simple_strtoull+0x0/0xdc
[ 2776.250959] [<ffffffff8020948e>] system_call+0x7e/0x83
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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We need to work on cleaning up the relationship between kobjects, ksets and
ktypes. The removal of 'struct subsystem' is the first step of this,
especially as it is not really needed at all.
Thanks to Kay for fixing the bugs in this patch.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Very simple printk wrapper which adds the ability to enable various
sets of debug messages at run-time.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
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