b45e41d7d5
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 <swhiteho@redhat.com>
71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License version 2.
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*/
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#ifndef __RGRP_DOT_H__
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#define __RGRP_DOT_H__
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struct gfs2_rgrpd;
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struct gfs2_sbd;
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struct gfs2_holder;
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void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd);
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struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk);
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struct gfs2_rgrpd *gfs2_rgrpd_get_first(struct gfs2_sbd *sdp);
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struct gfs2_rgrpd *gfs2_rgrpd_get_next(struct gfs2_rgrpd *rgd);
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void gfs2_clear_rgrpd(struct gfs2_sbd *sdp);
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int gfs2_rindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ri_gh);
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int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd);
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void gfs2_rgrp_bh_hold(struct gfs2_rgrpd *rgd);
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void gfs2_rgrp_bh_put(struct gfs2_rgrpd *rgd);
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void gfs2_rgrp_repolish_clones(struct gfs2_rgrpd *rgd);
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struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip);
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static inline void gfs2_alloc_put(struct gfs2_inode *ip)
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{
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BUG_ON(ip->i_alloc == NULL);
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kfree(ip->i_alloc);
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ip->i_alloc = NULL;
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}
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int gfs2_inplace_reserve_i(struct gfs2_inode *ip,
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char *file, unsigned int line);
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#define gfs2_inplace_reserve(ip) \
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gfs2_inplace_reserve_i((ip), __FILE__, __LINE__)
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void gfs2_inplace_release(struct gfs2_inode *ip);
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unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block);
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u64 gfs2_alloc_block(struct gfs2_inode *ip, unsigned int *n);
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u64 gfs2_alloc_di(struct gfs2_inode *ip, u64 *generation);
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void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen);
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void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen);
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void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip);
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void gfs2_unlink_di(struct inode *inode);
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struct gfs2_rgrp_list {
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unsigned int rl_rgrps;
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unsigned int rl_space;
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struct gfs2_rgrpd **rl_rgd;
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struct gfs2_holder *rl_ghs;
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};
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void gfs2_rlist_add(struct gfs2_sbd *sdp, struct gfs2_rgrp_list *rlist,
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u64 block);
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void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state);
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void gfs2_rlist_free(struct gfs2_rgrp_list *rlist);
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u64 gfs2_ri_total(struct gfs2_sbd *sdp);
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#endif /* __RGRP_DOT_H__ */
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