ASSERT trip in XFS

[Daniel Moore <dxm@xxxxxxxxxxxxxxxxxxxxxxxx>]

With T-o-T XFS, on IDE, no kio, SMP, no HIGHMEM, qa 042 fails in page_daemon:
(related to recent "xfs_strategy" changes ?)

(failed 2 out of 2 runs)


XFS assertion failed: tp->t_blk_res_used <= tp->t_blk_res, file: xfs_trans.c, 
line: 335
kernel BUG at debug.c:48!

Entering kdb (current=0xc7844000, pid 732) on processor 0 Panic: invalid 
operand
due to panic @ 0xc8828da5
eax = 0x0000001a ebx = 0xc2690360 ecx = 0x00000001 edx = 0x00000000 
esi = 0xfffffff1 edi = 0xc7845c24 esp = 0xc78459e8 eip = 0xc8828da5 
ebp = 0xc78459f4 xss = 0x00000018 xcs = 0x00000010 eflags = 0x00010246 
xds = 0x00000018 xes = 0x00000018 origeax = 0xffffffff &regs = 0xc78459b4
[0]kdb> bt
    EBP       EIP         Function(args)
0xc78459f4 0xc8828da5 [xfs_support]assfail+0x2d (0xc89b1580, 0xc89b13d4, 0x14f)
                               xfs_support .text 0xc8828060 0xc8828d78 
0xc8828dac
0xc7845a10 0xc89830f6 [xfs]xfs_trans_mod_sb+0x142 (0xc2690360, 0x4, 0xfffffff1)
                               xfs .text 0xc8926060 0xc8982fb4 0xc8983250
0xc7845a2c 0xc8926e50 [xfs]xfs_alloc_ag_vextent+0x278 (0xc7845c24, 0xc45e3000, 
0x17de, 0x0)
                               xfs .text 0xc8926060 0xc8926bd8 0xc8926e6c
0xc7845a64 0xc89297ae [xfs]xfs_alloc_vextent+0x21e (0xc7845c24)
                               xfs .text 0xc8926060 0xc8929590 0xc8929a7c
0xc7845c74 0xc8939d7c [xfs]xfs_bmap_alloc+0x1930 (0xc7845da4)
                               xfs .text 0xc8926060 0xc893844c 0xc893a04c
0xc7845df0 0xc893dff1 [xfs]xfs_bmapi+0x875 (0xc2690360, 0xc4d7b304, 0x1, 0x0, 
0xf)
                               xfs .text 0xc8926060 0xc893d77c 0xc893f118
0xc7845f24 0xc8998e7b [xfs]xfs_strategy+0x577 (0xc4d7b31c, 0x0, 0x0, 0x1000, 
0x10002)
                               xfs .text 0xc8926060 0xc8998904 0xc89992f0
0xc7845f5c 0xc8997039 [xfs]linvfs_pb_bmap+0xa5 (0xc4155440, 0x0, 0x0, 0x1000, 
0xc7845f9c)
                               xfs .text 0xc8926060 0xc8996f94 0xc8997048
0xc7845fb8 0xc8833623 [pagebuf]pagebuf_delalloc_convert+0x4b (0xc1171008, 
0xc77b4000)
                               pagebuf .text 0xc882e060 0xc88335d8 0xc883382c
0xc7845fec 0xc8833a20 [pagebuf]page_cleaner_daemon+0x1f4
                               pagebuf .text 0xc882e060 0xc883382c 0xc8833b00
           0xc0107547 kernel_thread+0x23
[0]more> 
                               kernel .text 0xc0100000 0xc0107524 0xc010755c