SCSI写调用栈

#0 sym53c8xx_queue_command (cmd=0xc74d0ba0, done=0xc01967b4 )
at drivers/scsi/sym53c8xx_2/sym_glue.h:228
#1 0xc0196d64 in scsi_dispatch_cmd (cmd=0xc74d0ba0) at drivers/scsi/scsi.c:567
#2 0xc019c868 in scsi_request_fn (q=0xc74d9b78)
at drivers/scsi/scsi_lib.c:1583
#3 0xc0144128 in __generic_unplug_device (q=0xc74d9b78)
at block/ll_rw_blk.c:1596
#4 0xc014442c in generic_unplug_device (q=0xc74d0ba0)
at block/ll_rw_blk.c:1614
#5 0xc0141820 in blk_unplug (q=0xc74d0ba0) at block/ll_rw_blk.c:1657
#6 0xc0141838 in blk_backing_dev_unplug (bdi=,
page=0xc01967b4) at block/ll_rw_blk.c:1624
#7 0xc00aa12c in sync_buffer (word=)
at include/linux/blkdev.h:711
#8 0xc0276668 in __wait_on_bit (wq=0xc00000d8, q=0xc7cbfc1c,
action=0xc00aa0e4 , mode=2) at kernel/wait.c:169
#9 0xc0276848 in out_of_line_wait_on_bit (word=0xc78064a8, bit=2,
action=0xc00aa0e4 , mode=2) at kernel/wait.c:182
#10 0xc00aa060 in __wait_on_buffer (bh=0xc74d0ba0) at include/linux/wait.h:434
#11 0xc00aab3c in __block_prepare_write (inode=0xc78020a8, page=0xc044a5a0,
from=0, to=512, get_block=0xc00af6f4 )
at include/linux/buffer_head.h:318
#12 0xc00aaca8 in block_write_begin (file=,
---Type to continue, or q to quit---
mapping=, pos=0, len=512, flags=0, pagep=0xc7cbfd94,
fsdata=0xc7cbfd90, get_block=0xc00af6f4 )
at fs/buffer.c:1976
#13 0xc00ae82c in blkdev_write_begin (file=0xc74d0ba0, mapping=0xc01967b4,
pos=-4597233264497786742, len=512, flags=0, pagep=0xc7cbfd94,
fsdata=0xc7cbfd90) at fs/block_dev.c:386
#14 0xc006b148 in generic_file_buffered_write (iocb=0xc7cbfe90,
iov=, nr_segs=,
pos=-4597233264497786742, ppos=0xc7cbfee0, count=512, written=0)
at mm/filemap.c:2236
#15 0xc006ba78 in __generic_file_aio_write_nolock (iocb=0xc7cbfe90,
iov=0xc7cbff20, nr_segs=1, ppos=0xc7cbfee0) at mm/filemap.c:2415
#16 0xc006bc04 in generic_file_aio_write_nolock (iocb=0xc74d0ba0,
iov=0xc01967b4, nr_segs=138, pos=0) at mm/filemap.c:2433
#17 0xc0087d20 in do_sync_write (filp=0xc7c84660, buf=,
len=, ppos=0xc7cbff78) at fs/read_write.c:300
#18 0xc00885ec in vfs_write (file=0xc7c84660, buf=0x51050 "", count=138,
pos=0xc7cbff78) at fs/read_write.c:331
#19 0xc0088b98 in sys_write (fd=, buf=0x0, count=138)
at fs/read_write.c:384
#20 0xc0024e40 in kuser_cmpxchg_fixup ()