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authorChris Mason <chris.mason@oracle.com>2011-07-19 12:04:14 -0400
committerChris Mason <chris.mason@oracle.com>2011-07-27 12:46:45 -0400
commita65917156e345946dbde3d7effd28124c6d6a8c2 (patch)
treedc5478189be0f6a321bfc23ee0545f71de67763b /arch
parent199c36eaa95077a47ae1bc55532fc0fbeb80cc95 (diff)
Btrfs: stop using highmem for extent_buffers
The extent_buffers have a very complex interface where we use HIGHMEM for metadata and try to cache a kmap mapping to access the memory. The next commit adds reader/writer locks, and concurrent use of this kmap cache would make it even more complex. This commit drops the ability to use HIGHMEM with extent buffers, and rips out all of the related code. Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'arch')
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