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| author | Benjamin LaHaise <bcrl@kvack.org> | 2013-12-21 23:56:08 +0100 |
|---|---|---|
| committer | Benjamin LaHaise <bcrl@kvack.org> | 2013-12-21 23:56:08 +0100 |
| commit | 8e321fefb0e60bae4e2a28d20fc4fa30758d27c6 (patch) | |
| tree | c00de123ad058cc2d69a2e3d59dd7a2bb7500542 /firmware | |
| parent | aio: fix kioctx leak introduced by "aio: Fix a trinity splat" (diff) | |
| download | linux-8e321fefb0e60bae4e2a28d20fc4fa30758d27c6.tar.xz linux-8e321fefb0e60bae4e2a28d20fc4fa30758d27c6.zip | |
aio/migratepages: make aio migrate pages sane
The arbitrary restriction on page counts offered by the core
migrate_page_move_mapping() code results in rather suspicious looking
fiddling with page reference counts in the aio_migratepage() operation.
To fix this, make migrate_page_move_mapping() take an extra_count parameter
that allows aio to tell the code about its own reference count on the page
being migrated.
While cleaning up aio_migratepage(), make it validate that the old page
being passed in is actually what aio_migratepage() expects to prevent
misbehaviour in the case of races.
Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Diffstat (limited to 'firmware')
0 files changed, 0 insertions, 0 deletions