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Dear All, I implemented the sample block driver for the removable devices and the code contains no statements related to the spin lock except a lock to the blk_init_queue API as shown below. spinlock_t qlock; gDisk->blkqueue = blk_init_queue(do_my_request, &gDisk->qlock); The kernel version is 2.6.10. Everything works fine but when I try to copy a file of huge size (about 100MB), the following debug messages are getting displayed on the console: Fc3: drivers/block/ll_rw_blk.c: 2351: spin_lock already locked by the drivers. Fc3: drivers/block/ll_rw_blk.c: 2468: spin_unlock not locked by the drivers. In spite of these debug messages; the file is getting copied successfully. I studied the Block driver 16th chapter in LDD third edition. Can any one provide a pointer to these debug messages. Do I need to implement any patches for the kernel. Regards, Srinivas G. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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