Messages in this thread | | | Date | Wed, 28 Nov 2001 15:32:32 -0800 | From | "David C. Hansen" <> | Subject | Re: [PATCH] remove BKL from drivers' release functions |
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Alan Cox wrote:
>>drivers' release functions. The release functions are already >>serialized in the VFS code by an atomic_t which guarantees that each >> >The release function was only partially serialized - what stops a release >and an open racing each other ? That in several cases was why the lock >was there. > Nothing, because the BKL is not held for all opens anymore. In most of the cases that we addressed, the BKL was in release _only_, not in open at all. There were quite a few drivers where we added a spinlock, or used atomic operations to keep open from racing with release.
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