From: Theodore Ts'o <tytso@mit.edu>
Date: Mon, 7 Dec 2009 15:36:20 +0000 (-0500)
Subject: ext4: Use slab allocator for sub-page sized allocations
X-Git-Tag: v2.6.34-rc1~199^2~30
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d2eecb03936878ec574ade5532fa83df7d75dde7;p=pandora-kernel.git

ext4: Use slab allocator for sub-page sized allocations

Now that the SLUB seems to be fixed so that it respects the requested
alignment, use kmem_cache_alloc() to allocator if the block size of
the buffer heads to be allocated is less than the page size.
Previously, we were using 16k page on a Power system for each buffer,
even when the file system was using 1k or 4k block size.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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