Re: Inotify problem [was Re: 2.6.13-rc6-mm1]

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On Thu, 2005-08-25 at 10:13 -0400, John McCutchan wrote:

> I really don't want 2.6.13 to go out with this bug or the compromise. If
> we use 0, we will have a lot of wd re-use. Which will cause "strange"
> problems in inotify using applications that cleanup upon receipt of an
> IN_IGNORE event.

What happens when, given bug-free code that doesn't reuse, you hit the
8192 limit with wd, even if they're not all open at the same time? Does
it still add them, or will inotify give an error? And does the idr layer
handle something like that gracefully without using lots of memory?

The background is that the process using this is potentially quite
long-running and keeps opening/closing wds, so 8192 doesn't sound like a
high barrier, after all Reuben observed hitting the 1024 limit after 15
minutes or so.

johannes

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