Messages in this thread | | | From | "Stephen C. Tweedie" <> | Date | Wed, 23 Jun 1999 13:18:06 +0100 (BST) | Subject | Re: parallel writes to the same file, 2.3.7 |
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Hi,
On 22 Jun 1999 16:44:47 GMT, torvalds@transmeta.com (Linus Torvalds) said:
> So I decided to just get rid of the semaphore on the write side. There > are possibly cases we still have to check, but we'll do that with some > other mechanism. With the semaphore gone, we can do swapping better > anyway, no need for kpiod.
The original problem kpiod was designed to solve was the superblock lock during allocate, not the inode lock. As long as the filesystem, internally, can take a lock which the VM doesn't know about and which prevents recursive IO to that file from succeeding, we'll still need something like kpiod.
--Stephen
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