Messages in this thread |  | | Subject | Ramdisk / sync deadlock | Date | Tue, 22 Aug 2000 14:45:09 +1000 | From | Daniel Moore <> |
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System: SGI 1400 SMP w/ sym53c8xx SCSI. Kernel: 2.4.0-test5
I've been hitting a SMP deadlock caused by creating traffic on a ramdisk at the same time as syncing. The backtraces show the locks causing the deadlock. I don't know how to fix this one myself, so here's the info in case it helps...
CPU A
insert_into_queues <takes lru_list_lock> getblk rd_request generic_unplug_device <takes io_request_lock> __wait_on_buffer unmap_buffer block_flushpage truncate_inode_pages vmtruncate inode_setattr notify_change do_truncate open_namei filp_open sys_open system_call
CPU B
sym53c8xx_intr <takes io_request_lock> handle_IRQ_event <scsi interrupt here> sync_buffers <takes lru_list_lock> fsync_dev sys_sync system_call
Regards, ----------------------------------------------------- Daniel Moore dxm@sgi.com R&D Software Engineer Phone: +61-3-98348209 SGI Performance Tools Group Fax: +61-3-98132378 -----------------------------------------------------
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