linux-ext4 - Re: new mballoc patches.

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Date:	Thu, 13 Sep 2007 08:21:21 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	Alex Tomas <alex@...sterfs.com>
CC:	Andreas Dilger <adilger@...sterfs.com>,
	Mingming Cao <cmm@...ibm.com>,
	Avantika Mathur <mathur@...ux.vnet.ibm.com>,
	linux-ext4 <linux-ext4@...r.kernel.org>
Subject: Re: new mballoc patches.


I checked the logs today for the fsstress run i found this in my dmesg log. The
same stack trace is repeated for many times


uh! busy PA
Call Trace:
[c0000000efa72fc0] [c00000000000fe30] .show_stack+0x6c/0x1a0 (unreliable)
[c0000000efa73060] [c0000000001954a0] .ext4_mb_discard_group_preallocations+0x208/0x4fc
[c0000000efa73180] [c0000000001957c8] .ext4_mb_discard_preallocations+0x34/0x94
[c0000000efa73220] [c000000000197fc8] .ext4_mb_new_blocks+0x1fc/0x2c0
[c0000000efa733a0] [c00000000018dfb4] .ext4_ext_get_blocks+0x540/0x6f8
[c0000000efa734d0] [c00000000017bfe8] .ext4_get_block+0x12c/0x1b4
[c0000000efa73580] [c000000000109104] .__blockdev_direct_IO+0x554/0xb94
[c0000000efa736b0] [c000000000179b28] .ext4_direct_IO+0x138/0x208
[c0000000efa73790] [c00000000009a314] .generic_file_direct_IO+0x134/0x1a0
[c0000000efa73840] [c00000000009a404] .generic_file_direct_write+0x84/0x150
[c0000000efa73900] [c00000000009bf54] .__generic_file_aio_write_nolock+0x2c4/0x3d4
[c0000000efa73a00] [c00000000009c0e4] .generic_file_aio_write+0x80/0x114
[c0000000efa73ac0] [c000000000175c90] .ext4_file_write+0x2c/0xd4
[c0000000efa73b50] [c0000000000d0cf4] .do_sync_write+0xc4/0x124
[c0000000efa73cf0] [c0000000000d16bc] .vfs_write+0x120/0x1f4
[c0000000efa73d90] [c0000000000d21a8] .sys_write+0x4c/0x8c
[c0000000efa73e30] [c00000000000852c] syscall_exit+0x0/0x40
uh! busy PA
Call Trace:
[c0000000eed76f40] [c00000000000fe30] .show_stack+0x6c/0x1a0 (unreliable)
[c0000000eed76fe0] [c0000000001954a0] .ext4_mb_discard_group_preallocations+0x208/0x4fc
[c0000000eed77100] [c0000000001957c8] .ext4_mb_discard_preallocations+0x34/0x94
[c0000000eed771a0] [c000000000197fc8] .ext4_mb_new_blocks+0x1fc/0x2c0
[c0000000eed77320] [c00000000018dfb4] .ext4_ext_get_blocks+0x540/0x6f8
[c0000000eed77450] [c00000000017bfe8] .ext4_get_block+0x12c/0x1b4
[c0000000eed77500] [c000000000102b0c] .__block_prepare_write+0x194/0x584
[c0000000eed77610] [c000000000102f30] .block_prepare_write+0x34/0x64
[c0000000eed77690] [c00000000017a638] .ext4_prepare_write+0xd8/0x1e0
[c0000000eed77750] [c00000000009ac18] .generic_file_buffered_write+0x310/0x834
[c0000000eed77900] [c00000000009bf88] .__generic_file_aio_write_nolock+0x2f8/0x3d4
[c0000000eed77a00] [c00000000009c0e4] .generic_file_aio_write+0x80/0x114
[c0000000eed77ac0] [c000000000175c90] .ext4_file_write+0x2c/0xd4
[c0000000eed77b50] [c0000000000d0cf4] .do_sync_write+0xc4/0x124
[c0000000eed77cf0] [c0000000000d16bc] .vfs_write+0x120/0x1f4
[c0000000eed77d90] [c0000000000d21a8] .sys_write+0x4c/0x8c
[c0000000eed77e30] [c00000000000852c] syscall_exit+0x0/0x40
uh! busy PA
Call Trace:
[c0000000ec97abe0] [c00000000000fe30] .show_stack+0x6c/0x1a0 (unreliable)
[c0000000ec97ac80] [c0000000001954a0] .ext4_mb_discard_group_preallocations+0x208/0x4fc
[c0000000ec97ada0] [c0000000001957c8] .ext4_mb_discard_preallocations+0x34/0x94
[c0000000ec97ae40] [c000000000197fc8] .ext4_mb_new_blocks+0x1fc/0x2c0
[c0000000ec97afc0] [c0000000001748c0] .ext4_new_block+0x84/0x98
[c0000000ec97b090] [c00000000018a55c] .ext4_ext_new_block+0x5c/0x7c
[c0000000ec97b130] [c00000000018b994] .ext4_ext_create_new_leaf+0x9e4/0xcf4
[c0000000ec97b250] [c00000000018c524] .ext4_ext_insert_extent+0x36c/0x5c4
[c0000000ec97b320] [c00000000018e020] .ext4_ext_get_blocks+0x5ac/0x6f8
[c0000000ec97b450] [c00000000017bfe8] .ext4_get_block+0x12c/0x1b4
[c0000000ec97b500] [c000000000102b0c] .__block_prepare_write+0x194/0x584
[c0000000ec97b610] [c000000000102f30] .block_prepare_write+0x34/0x64
[c0000000ec97b690] [c00000000017a638] .ext4_prepare_write+0xd8/0x1e0
[c0000000ec97b750] [c00000000009ac18] .generic_file_buffered_write+0x310/0x834
[c0000000ec97b900] [c00000000009bf88] .__generic_file_aio_write_nolock+0x2f8/0x3d4
[c0000000ec97ba00] [c00000000009c0e4] .generic_file_aio_write+0x80/0x114
[c0000000ec97bac0] [c000000000175c90] .ext4_file_write+0x2c/0xd4
[c0000000ec97bb50] [c0000000000d0cf4] .do_sync_write+0xc4/0x124
[c0000000ec97bcf0] [c0000000000d16bc] .vfs_write+0x120/0x1f4
[c0000000ec97bd90] [c0000000000d21a8] .sys_write+0x4c/0x8c
[c0000000ec97be30] [c00000000000852c] syscall_exit+0x0/0x4
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