Messages in this thread | | | Date | Wed, 21 Mar 2001 19:11:19 -0800 (PST) | From | Nigel Gamble <> | Subject | lock_kernel() usage and sync_*() functions |
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Why is the kernel lock held around sync_supers() and sync_inodes() in sync_old_buffers() and fsync_dev(), but not in sync_dev()? Is it just to serialize calls to these functions, or is there some other reason?
Since this use of the BKL is one of the causes of high preemption latency in a preemptible kernel, I'm hoping it would be OK to replace them with a semaphore. Please let me know if this is not the case.
Thanks!
Nigel Gamble nigel@nrg.org Mountain View, CA, USA. http://www.nrg.org/
MontaVista Software nigel@mvista.com
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