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Message-Id: <20070131162422.6bccc52c.akpm@osdl.org>
Date: Wed, 31 Jan 2007 16:24:22 -0800
From: Andrew Morton <akpm@...l.org>
To: Christoph Lameter <clameter@....com>
Cc: linux-kernel@...r.kernel.org, Jens Axboe <jens.axboe@...cle.com>
Subject: Re: 2.6.20-rc6-mm3
On Wed, 31 Jan 2007 16:14:10 -0800 (PST)
Christoph Lameter <clameter@....com> wrote:
> On Mon, 29 Jan 2007, Andrew Morton wrote:
>
> > - Restored git-block.patch: mainly the block unplugging rework. The
> > problematic CFQ updates have been taken out.
>
> MD hung again as before so I compiled a kernel
> without it. Next XFS started hanging during bootup.
ow. Please don't make me drop git-block-and-lots-of-other-things again.
Was 2.6.20-rc6-mm2 OK? It didn't have git-block.
> Some traces of processes hung but I do not have a clue as to what is
> wrong here...:
Probably an IO got lost.
> Call Trace:
> [<a00000010074c1b0>] schedule+0x1bf0/0x1ec0
> sp=e00000301560fac0 bsp=e000003015608fc8
> [<a0000001003ba350>] xfs_buf_iorequest+0x130/0x820
> sp=e00000301560fbd0 bsp=e000003015608f58
> [<a0000001003c5b00>] xfs_bdstrat_cb+0x60/0x100
> sp=e00000301560fc00 bsp=e000003015608f38
> [<a0000001003b2ba0>] xfs_bwrite+0xe0/0x1e0
> sp=e00000301560fc00 bsp=e000003015608f00
> [<a0000001003a3980>] xfs_syncsub+0x2c0/0x520
> sp=e00000301560fc00 bsp=e000003015608eb0
> [<a0000001003a3d30>] xfs_sync+0x70/0xa0
> sp=e00000301560fc00 bsp=e000003015608e88
> [<a0000001003cb400>] vfs_sync+0xa0/0xc0
> sp=e00000301560fc00 bsp=e000003015608e58
> [<a0000001003c8910>] xfs_fs_write_super+0x70/0xa0
> sp=e00000301560fc00 bsp=e000003015608e38
> [<a00000010016d490>] sync_supers+0x150/0x260
> sp=e00000301560fc00 bsp=e000003015608e08
> [<a000000100115820>] wb_kupdate+0x60/0x280
> sp=e00000301560fc00 bsp=e000003015608dc8
> [<a000000100116570>] pdflush+0x330/0x4e0
> sp=e00000301560fc50 bsp=e000003015608d90
> [<a0000001000d2ac0>] kthread+0x220/0x2a0
> sp=e00000301560fd50 bsp=e000003015608d48
> [<a000000100010a50>] kernel_thread_helper+0xd0/0x100
> sp=e00000301560fe30 bsp=e000003015608d20
> [<a000000100009140>] start_kernel_thread+0x20/0x40
> sp=e00000301560fe30 bsp=e000003015608d20
>
> Call Trace:
> [<a00000010074c1b0>] schedule+0x1bf0/0x1ec0
> sp=e00001b03869f8b0 bsp=e00001b038699618
> [<a00000010074db00>] schedule_timeout+0x40/0x180
> sp=e00001b03869f9c0 bsp=e00001b0386995e0
> [<a000000100385420>] _xfs_log_force+0x500/0x5c0
> sp=e00001b03869f9f0 bsp=e00001b038699580
> [<a00000010030ccf0>] xfs_alloc_search_busy+0x190/0x1e0
> sp=e00001b03869fa20 bsp=e00001b038699538
> [<a000000100311010>] xfs_alloc_ag_vextent+0x2250/0x2420
> sp=e00001b03869fa20 bsp=e00001b0386994a8
> [<a000000100312490>] xfs_alloc_vextent+0x690/0x9c0
> sp=e00001b03869fa60 bsp=e00001b038699428
> [<a000000100332540>] xfs_bmapi+0x1e00/0x33a0
> sp=e00001b03869fa60 bsp=e00001b0386992d8
> [<a00000010037e750>] xfs_iomap_write_allocate+0x3f0/0x760
> sp=e00001b03869fba0 bsp=e00001b038699248
> [<a00000010037d650>] xfs_iomap+0x670/0xb00
> sp=e00001b03869fc30 bsp=e00001b0386991d0
> [<a0000001003c5a80>] xfs_bmap+0x40/0x60
> sp=e00001b03869fc80 bsp=e00001b038699188
> [<a0000001003b5b40>] xfs_map_blocks+0xa0/0x120
> sp=e00001b03869fc80 bsp=e00001b038699148
> [<a0000001003b6260>] xfs_page_state_convert+0x540/0x1a40
> sp=e00001b03869fc90 bsp=e00001b038699080
> [<a0000001003b7e20>] xfs_vm_writepage+0x180/0x220
> sp=e00001b03869fd50 bsp=e00001b038699040
> [<a0000001001146e0>] generic_writepages+0x420/0x800
> sp=e00001b03869fd60 bsp=e00001b038698fc0
> [<a0000001003b7f50>] xfs_vm_writepages+0x90/0xc0
> sp=e00001b03869fdf0 bsp=e00001b038698f88
> [<a000000100114b70>] do_writepages+0xb0/0x120
> sp=e00001b03869fdf0 bsp=e00001b038698f58
> [<a000000100108470>] __filemap_fdatawrite_range+0xb0/0xe0
> sp=e00001b03869fdf0 bsp=e00001b038698f20
> [<a0000001001089c0>] filemap_fdatawrite+0x40/0x60
> sp=e00001b03869fe30 bsp=e00001b038698f00
> [<a0000001003befe0>] fs_flush_pages+0xc0/0x100
> sp=e00001b03869fe30 bsp=e00001b038698eb8
> [<a0000001003adaf0>] xfs_close+0x190/0x1e0
> sp=e00001b03869fe30 bsp=e00001b038698e80
> [<a0000001003be4e0>] xfs_file_close+0xa0/0xc0
> sp=e00001b03869fe30 bsp=e00001b038698e60
> [<a0000001001643b0>] filp_close+0xd0/0x140
> sp=e00001b03869fe30 bsp=e00001b038698e30
> [<a000000100164560>] sys_close+0x140/0x1e0
> sp=e00001b03869fe30 bsp=e00001b038698db0
> [<a00000010000b360>] ia64_ret_from_syscall+0x0/0x20
> sp=e00001b03869fe30 bsp=e00001b038698db0
> [<a000000000010620>] __kernel_syscall_via_break+0x0/0x20
> sp=e00001b0386a0000 bsp=e00001b038698db0
-
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