Messages in this thread |  | | | Date | Wed, 1 Feb 2012 04:18:07 -0500 | | From | Christoph Hellwig <> | | Subject | Re: [PATCH] fix readahead pipeline break caused by block plug |
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On Tue, Jan 31, 2012 at 10:36:53PM -0500, Vivek Goyal wrote: > I still see that IO is being submitted one page at a time. The only > real difference seems to be that queue unplug happening at random times > and many a times we are submitting much smaller requests (40 sectors, 48 > sectors etc).
This is expected given that the block device node uses block_read_full_page, and not mpage_readpage(s).
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