Messages in this thread | | | Date | Mon, 23 Oct 2006 17:32:57 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH] Use extents for recording what swap is allocated. |
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Hi!
> Switch from bitmaps to using extents to record what swap is allocated; > they make more efficient use of memory, particularly where the allocated > storage is small and the swap space is large.
> This is also part of the ground work for implementing support for > supporting multiple swap devices.
bitmaps were more efficient and longer than original code... I did not _like_ them, but they are in now. I'd hate to change the code again, for what, 0.5% gain?
...and this is still longer than bitmaps.
And SNAPSHOT_GET_SWAP_PAGE seems to support multiple swap spaces already. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - 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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