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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/gfs2/inode.c
parent4442f2e03ed9646664c94e197e637b03324a6664 (diff)
downloadtalos-obmc-linux-6e87ed0fc93ffbe2aec296e6912b1dcb19034d6c.tar.gz
talos-obmc-linux-6e87ed0fc93ffbe2aec296e6912b1dcb19034d6c.zip
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>
Diffstat (limited to 'fs/gfs2/inode.c')
-rw-r--r--fs/gfs2/inode.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index de2668f5c974..3ab192bac7d3 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -389,6 +389,7 @@ static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
{
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
int error;
+ int dblocks = 0;
if (gfs2_alloc_get(dip) == NULL)
return -ENOMEM;
@@ -402,7 +403,7 @@ static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
if (error)
goto out_ipreserv;
- error = gfs2_alloc_block(dip, no_addr, NULL, 1, generation);
+ error = gfs2_alloc_blocks(dip, no_addr, &dblocks, 1, generation);
gfs2_trans_end(sdp);
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