Messages in this thread |  | | Date | Sun, 7 Jan 2001 17:07:59 -0200 (BRST) | From | Marcelo Tosatti <> | Subject | Re: [patch] mm-cleanup-1 (2.4.0) |
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On 7 Jan 2001, Zlatko Calusic wrote:
> The following patch cleans up some obsolete structures from the mm & > proc code. > > Beside that it also fixes what I think is a bug: > > if ((rw == WRITE) && atomic_read(&nr_async_pages) > > pager_daemon.swap_cluster * (1 << page_cluster)) > > In that (swapout logic) it effectively says swap out 512KB at once (at > least on my memory configuration). I think that is a little too much. > I modified it to be a little bit more conservative and send only > (1 << page_cluster) to the swap at a time. Same applies to the > swapin_readahead() function. Comments welcome.
512kb is the maximum limit for in-flight swap pages, not the cluster size for IO.
swapin_readahead actually sends requests of (1 << page_cluster) to disk at each run.
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