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    SubjectRe: [Announce] BKL shifting into drivers and filesystems - beware


    On Fri, 14 Jul 2000, Hans Reiser wrote:

    > Alexander Viro wrote:
    >
    > > * Probably inode methods for directories are going to be called without
    > > BKL. Again, I'll do the work for in-kernel filesystems, but 3rd-party ones
    > > will have to be fixed by their maintainers.
    >
    > I encourage you to do this one, it really affects performance significantly for
    > squid. Reiserfs would put everything in one directory for squid and gain 10-24%
    > if not for this lock. Whether it should be done pre or post 2.4 I leave to
    > others..... except to say that we will be happy to scramble a bit to adapt to
    > your fix of this.
    >

    No, this is the big kernel lock, and is not the directory semaphore that
    serializes creates/deletes to a single dir.

    -chris


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