Messages in this thread |  | | | Date | Fri, 20 Mar 2009 19:37:25 +0530 | | From | Nitin Gupta <> | | Subject | [PATCH 0/3] compressed in-memory swapping take2 |
| |
Hi,
It allows creating a RAM based block device which acts as swap disk. Pages swapped to this device are compressed and stored in memory itself. This is a big win over swapping to slow hard-disk which are typically used as swap disk. For flash, these suffer from wear-leveling issues when used as swap disk - so again its helpful. For swapless systems, it allows more apps to run.
* Changelog: take2 vs initial revision: xvmalloc changes: - Use Linux kernel coding sytle for xvmalloc - Collapse all individual flag test/set/get to generic {test_set_get}_flag - Added BLOCK_NEXT() macro to reach next contiguous block - Other minor cleanups - no functional changes compcache block device code: - compcache core changes due to change in xvmalloc interface names Links to performance numbers, use cases can be found in original thread: http://lkml.org/lkml/2009/3/17/116
Thanks to Christoph and Pekka for feedback on initial revision.
Thanks, Nitin
|  |