]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
[XFS] eagerly remove vmap mappings to avoid upsetting Xen
authorJeremy Fitzhardinge <jeremy@xensource.com>
Wed, 17 Oct 2007 03:55:03 +0000 (13:55 +1000)
committerTim Shimmin <tes@chook.melbourne.sgi.com>
Wed, 17 Oct 2007 04:14:35 +0000 (14:14 +1000)
commit7f015072348a14f16d548be557ee58c5c55df0aa
tree957c0ddf2bddd976269f707ef8043e588baf1c5f
parent6572bc28de150aaa6ca182eaf3e60c199ba48630
[XFS] eagerly remove vmap mappings to avoid upsetting Xen

XFS leaves stray mappings around when it vmaps memory to make it virtually
contigious. This upsets Xen if one of those pages is being recycled into a
pagetable, since it finds an extra writable mapping of the page.

This patch solves the problem in a brute force way, by making XFS always
eagerly unmap its mappings.

SGI-PV: 971902
SGI-Modid: xfs-linux-melb:xfs-kern:29886a

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
fs/xfs/linux-2.6/xfs_buf.c