btrfs: use slab for end_io_wq structures
authorDavid Sterba <dsterba@suse.cz>
Tue, 29 Jul 2014 22:55:42 +0000 (00:55 +0200)
committerDavid Sterba <dsterba@suse.cz>
Thu, 2 Oct 2014 15:30:29 +0000 (17:30 +0200)
The structure is frequently reused.  Rename it according to the slab
name.

Signed-off-by: David Sterba <dsterba@suse.cz>

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