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authorBob Peterson <rpeterso@redhat.com>2011-11-18 10:58:32 -0500
committerSteven Whitehouse <swhiteho@redhat.com>2011-11-21 10:04:09 +0000
commit6e87ed0fc93ffbe2aec296e6912b1dcb19034d6c (patch)
tree4f4ac522d34f35de3e3671996ddc35977aaa49ad /fs/debugfs
parent4442f2e03ed9646664c94e197e637b03324a6664 (diff)
downloadop-kernel-dev-6e87ed0fc93ffbe2aec296e6912b1dcb19034d6c.zip
op-kernel-dev-6e87ed0fc93ffbe2aec296e6912b1dcb19034d6c.tar.gz
GFS2: move toward a generic multi-block allocator
This patch is a revision of the one I previously posted. I tried to integrate all the suggestions Steve gave. The purpose of the patch is to change function gfs2_alloc_block (allocate either a dinode block or an extent of data blocks) to a more generic gfs2_alloc_blocks function that can allocate both a dinode _and_ an extent of data blocks in the same call. This will ultimately help us create a multi-block reservation scheme to reduce file fragmentation. This patch moves more toward a generic multi-block allocator that takes a pointer to the number of data blocks to allocate, plus whether or not to allocate a dinode. In theory, it could be called to allocate (1) a single dinode block, (2) a group of one or more data blocks, or (3) a dinode plus several data blocks. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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