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authorDavid Sterba <dsterba@suse.com>2017-03-02 18:54:52 +0100
committerDavid Sterba <dsterba@suse.com>2017-04-18 14:07:25 +0200
commit7ef70b4d9987a78d39c4e40a02093493333e5408 (patch)
tree95d61665823af9253ba7fa6a00a84754ab820c93 /README
parentcc8385b59e17d489814d54d6a846aba7051fdea5 (diff)
downloadlinux-7ef70b4d9987a78d39c4e40a02093493333e5408.tar.bz2
btrfs: preallocate radix tree node for global readahead tree
We can preallocate the node so insertion does not have to do that under the lock. The GFP flags for the global radix tree are initialized to GFP_NOFS & ~__GFP_DIRECT_RECLAIM but we can use GFP_KERNEL, because readahead is optional and not on any critical writeout path. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
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