Messages in this thread | | | Date | Thu, 05 Sep 2002 12:17:23 -0700 | From | Andrew Morton <> | Subject | Re: invalidate_inode_pages in 2.5.32/3 |
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Chuck Lever wrote: > > On Thu, 5 Sep 2002, Andrew Morton wrote: > > > That all assumes SMP/preempt. If you're seeing these problems on > > uniproc/non-preempt then something fishy may be happening. > > sorry, forgot to mention: the system is UP, non-preemptible, high mem. > > invalidate_inode_pages isn't freeing these pages because the page count is > two. perhaps the page count semantics of one of the page cache helper > functions has changed slightly. i'm still diagnosing.
OK, thanks. I can't immediately think of anything which would have altered the refcounting in there except for page reclaim.
What you could do is to check whether the `page_count(page) != 1' pages are on the LRU. If they have !PageLRU(page) then the extra ref was taken by shrink_cache(). But that would be pretty rare, especially on UP.
You may have more success using the stronger invalidate_inode_pages2(). - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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