xen/blkback: Use kzalloc's, and GFP_KERNEL for data structures.
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Mon, 14 Mar 2011 16:41:26 +0000 (12:41 -0400)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Thu, 14 Apr 2011 22:26:25 +0000 (18:26 -0400)
commita742b02c75e6e76bd0833f9b6e702f1be7d7e008
treef547cef66dde1712e7dd6f9c5974e694ddf9e826
parent5dc03639cc903f887931831d69895facb5260f4b
xen/blkback: Use kzalloc's, and GFP_KERNEL for data structures.

The patch titled:"xen/blkback: Use 'vzalloc' for page arrays and pre-allocate pages."
allocates the structures and its member variables using the 'vzalloc'.

Daniel Stodden pointed out that vzalloc is good when we use
big number of pages - while these are at the max two pages.

We can do this using kzalloc. Also the GFP_HIGHMEM does not
work properly with Xen, so take that out.

We will have to revisit this when a "get_empty_pages_and_pagevec"
type API shows up to leverage that.

BugLink: http://mid.gmane.org/1299898639.11681.227.camel@agari.van.xensource.com
CC: Daniel Stodden <daniel.stodden@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
drivers/xen/blkback/blkback.c