Re: [RFC] parallel directory operations

Date: Tue Jul 08 2003 - 12:15:26 EST

>>>>> Nikita Danilov (ND) writes:

 ND> By taking this approach one step further you may just add a semaphore
 ND> into struct dentry and take it instead of directory ->i_sem. I think
 ND> Alexander Viro tried something similar in the past, but it slowed down
 ND> common case when there is no concurrent access to the directory.

it's not semaphore. locks are created on demand to protect part of directory.
we can't have a lots of semaphores allocated statically for each part of
each directory.

BTW, all of this have to be enabled by 'pdirops' ext3's mount option. so, things
don't slow down w/o this option.

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