| commit | 4983da07f1e2e8dc81cb9d640fbf35b899cdbdf2 | |
| author | Christoph Lameter <clameter@engr.sgi.com> | |
| Wed, 15 Mar 2006 03:50:19 +0000 (14 19:50 -0800) | ||
| committer | Linus Torvalds <torvalds@g5.osdl.org> | |
| Wed, 15 Mar 2006 05:43:02 +0000 (14 21:43 -0800) | ||
| tree | 9c238114f029d1d22bc55f47e8d95ef7335c540d | treesnapshot (tar.gz zip) |
| parent | e843e280cbe218fc8387339806d344708dee348a | commitdiff |
[PATCH] page migration: fail if page is in a vma flagged VM_LOCKED
page migration currently simply retries a couple of times if try_to_unmap()
fails without inspecting the return code.
However, SWAP_FAIL indicates that the page is in a vma that has the
VM_LOCKED flag set (if ignore_refs ==1). We can check for that return code
and avoid retrying the migration.
migrate_page_remove_references() now needs to return a reason why the
failure occured. So switch migrate_page_remove_references to use -Exx
style error messages.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
page migration currently simply retries a couple of times if try_to_unmap()
fails without inspecting the return code.
However, SWAP_FAIL indicates that the page is in a vma that has the
VM_LOCKED flag set (if ignore_refs ==1). We can check for that return code
and avoid retrying the migration.
migrate_page_remove_references() now needs to return a reason why the
failure occured. So switch migrate_page_remove_references to use -Exx
style error messages.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| fs/buffer.c | diffblobblamehistory | |
| mm/vmscan.c | diffblobblamehistory |