forked from luck/tmp_suning_uos_patched
0901097834
This patch improves the error handling in the case where we discover that the summary information in the resource group doesn't match the bitmap information while in the process of allocating blocks. Originally this resulted in a kernel bug, but this patch changes that so that we return -EIO and print some messages explaining what went wrong, and how to fix it. We also remember locally not to try and allocate from the same rgrp again, so that a subsequent allocation in a different rgrp should succeed. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
72 lines
2.4 KiB
C
72 lines
2.4 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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extern 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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extern void gfs2_clear_rgrpd(struct gfs2_sbd *sdp);
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extern int gfs2_rindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ri_gh);
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extern int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd);
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extern void gfs2_rgrp_bh_hold(struct gfs2_rgrpd *rgd);
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extern void gfs2_rgrp_bh_put(struct gfs2_rgrpd *rgd);
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extern void gfs2_rgrp_repolish_clones(struct gfs2_rgrpd *rgd);
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extern 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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extern int gfs2_inplace_reserve_i(struct gfs2_inode *ip, char *file,
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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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extern void gfs2_inplace_release(struct gfs2_inode *ip);
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extern unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block);
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extern int gfs2_alloc_block(struct gfs2_inode *ip, u64 *bn, unsigned int *n);
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extern u64 gfs2_alloc_di(struct gfs2_inode *ip, u64 *generation);
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extern void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen);
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extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen);
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extern void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip);
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extern 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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extern void gfs2_rlist_add(struct gfs2_sbd *sdp, struct gfs2_rgrp_list *rlist,
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u64 block);
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extern void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state);
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extern void gfs2_rlist_free(struct gfs2_rgrp_list *rlist);
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extern u64 gfs2_ri_total(struct gfs2_sbd *sdp);
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extern int gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl);
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#endif /* __RGRP_DOT_H__ */
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