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On Wed, Apr 17, 2002 at 08:09:12AM -0700, William Lee Irwin III wrote: > I did some research on how truncate_inode_pages()'s locking works. > Please feel free to clarify and/or correct my notes on the subject, > which I'd like to turn into a docpatch soon. > > (9) exclusion from simultaneous manipulation of page->mapping > pagemap_lru_lock This is incorrect. It appears to be a combination of PG_locked and pagecache_lock, where both are required for writing, and only one of the two for reading. Cheers, Bill - 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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