Richard Yao 2a3871d4bc Cleanup zvol initialization code ... The following error will occur on some (possibly all) kernels because blk_init_queue() will try to take the spinlock before we initialize it. BUG: spinlock bad magic on CPU#0, zpool/4054 lock: 0xffff88021a73de60, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 Pid: 4054, comm: zpool Not tainted 3.9.3 #11 Call Trace: [<ffffffff81478ef8>] spin_dump+0x8c/0x91 [<ffffffff81478f1e>] spin_bug+0x21/0x26 [<ffffffff812da097>] do_raw_spin_lock+0x127/0x130 [<ffffffff8147d851>] _raw_spin_lock_irq+0x21/0x30 [<ffffffff812c2c1e>] cfq_init_queue+0x1fe/0x350 [<ffffffff812aacb8>] elevator_init+0x78/0x140 [<ffffffff812b2677>] blk_init_allocated_queue+0x87/0xb0 [<ffffffff812b26d5>] blk_init_queue_node+0x35/0x70 [<ffffffff812b271e>] blk_init_queue+0xe/0x10 [<ffffffff8125211b>] __zvol_create_minor+0x24b/0x620 [<ffffffff81253264>] zvol_create_minors_cb+0x24/0x30 [<ffffffff811bd9ca>] dmu_objset_find_spa+0xea/0x510 [<ffffffff811bda71>] dmu_objset_find_spa+0x191/0x510 [<ffffffff81253ea2>] zvol_create_minors+0x92/0x180 [<ffffffff811f8d80>] spa_open_common+0x250/0x380 [<ffffffff811f8ece>] spa_open+0xe/0x10 [<ffffffff8122817e>] pool_status_check.part.22+0x1e/0x80 [<ffffffff81228a55>] zfsdev_ioctl+0x155/0x190 [<ffffffff8116a695>] do_vfs_ioctl+0x325/0x5a0 [<ffffffff8116a950>] sys_ioctl+0x40/0x80 [<ffffffff814812c9>] ? do_page_fault+0x9/0x10 [<ffffffff81483929>] system_call_fastpath+0x16/0x1b zd0: unknown partition table We fix this by calling spin_lock_init before blk_init_queue. The manner in which zvol_init() initializes structures is suspectible to a race between initialization and a probe on a zvol. We reorganize zvol_init() to prevent that. Signed-off-by: Richard Yao <ryao@gentoo.org> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>		2013-07-03 09:23:35 -07:00
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avl	Add script for builtin module building.	2012-07-26 13:45:09 -07:00
nvpair	Register correct handlers in nvlist_alloc()	2013-06-20 09:58:15 -07:00
unicode	Add script for builtin module building.	2012-07-26 13:45:09 -07:00
zcommon	Add snapdev=[hidden|visible] dataset property	2013-03-05 12:37:54 -08:00
zfs	Cleanup zvol initialization code	2013-07-03 09:23:35 -07:00
zpios	Refresh links to web site	2013-03-06 15:46:41 -08:00
.gitignore	gitignore: anchor entries at their respective directory	2013-04-02 10:50:17 -07:00
Makefile.in	Add KMODDIR to install target	2013-03-06 15:46:40 -08:00