From b45e41d7d56dfef1ae9e02e6c59990066ba82e5c Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 6 Feb 2008 10:11:15 +0000 Subject: [GFS2] Add extent allocation to block allocator Rather than having to allocate a single block at a time, this patch allows the block allocator to allocate an extent. Since there is no difference (so far as the block allocator is concerned) between data blocks and indirect blocks, it is posible to allocate a single extent and for the caller to unrevoke just the blocks required for indirect blocks. Currently the only bit of GFS2 to make use of this feature is the build height function. The intention is that gfs2_block_map will be changed to make use of this feature in future patches. Signed-off-by: Steven Whitehouse --- fs/gfs2/eattr.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'fs/gfs2/eattr.c') diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c index f9f63bc21cd2..0e79cd543496 100644 --- a/fs/gfs2/eattr.c +++ b/fs/gfs2/eattr.c @@ -582,9 +582,10 @@ static int ea_alloc_blk(struct gfs2_inode *ip, struct buffer_head **bhp) { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); struct gfs2_ea_header *ea; + unsigned int n = 1; u64 block; - block = gfs2_alloc_block(ip); + block = gfs2_alloc_block(ip, &n); gfs2_trans_add_unrevoke(sdp, block, 1); *bhp = gfs2_meta_new(ip->i_gl, block); gfs2_trans_add_bh(ip->i_gl, *bhp, 1); @@ -642,8 +643,9 @@ static int ea_write(struct gfs2_inode *ip, struct gfs2_ea_header *ea, struct buffer_head *bh; u64 block; int mh_size = sizeof(struct gfs2_meta_header); + unsigned int n = 1; - block = gfs2_alloc_block(ip); + block = gfs2_alloc_block(ip, &n); gfs2_trans_add_unrevoke(sdp, block, 1); bh = gfs2_meta_new(ip->i_gl, block); gfs2_trans_add_bh(ip->i_gl, bh, 1); @@ -966,8 +968,8 @@ static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er, gfs2_trans_add_bh(ip->i_gl, indbh, 1); } else { u64 blk; - - blk = gfs2_alloc_block(ip); + unsigned int n = 1; + blk = gfs2_alloc_block(ip, &n); gfs2_trans_add_unrevoke(sdp, blk, 1); indbh = gfs2_meta_new(ip->i_gl, blk); gfs2_trans_add_bh(ip->i_gl, indbh, 1); -- cgit v1.2.3-55-g7522