forked from luck/tmp_suning_uos_patched
46290341cd
This patch fixes a GFS2 problem whereby the first rename after a mount can result in a file system consistency error being flagged improperly and cause the file system to withdraw. The problem is that the rename code tries to run the rgrp list with function gfs2_blk2rgrpd before the rgrp list is guaranteed to be read in from disk. The patch makes the rename function hold the rindex glock (as the gfs2_unlink code does today) which reads in the rgrp list if need be. There were a total of three places in the rename code that improperly referenced the rgrp list without the rindex glock and this patch fixes all three. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
76 lines
2.6 KiB
C
76 lines
2.6 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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#include <linux/slab.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, int hold_rindex,
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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), 1, __FILE__, __LINE__)
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#define gfs2_inplace_reserve_ri(ip) \
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gfs2_inplace_reserve_i((ip), 0, __FILE__, __LINE__)
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extern void gfs2_inplace_release(struct gfs2_inode *ip);
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extern int gfs2_alloc_block(struct gfs2_inode *ip, u64 *bn, unsigned int *n);
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extern int gfs2_alloc_di(struct gfs2_inode *ip, u64 *bn, 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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extern int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr,
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unsigned int type);
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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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