forked from luck/tmp_suning_uos_patched
dbb7cae2a3
This patch cleans up the inode number handling code. The main difference is that instead of looking up the inodes using a struct gfs2_inum_host we now use just the no_addr member of this structure. The tests relating to no_formal_ino can then be done by the calling code. This has advantages in that we want to do different things in different code paths if the no_formal_ino doesn't match. In the NFS patch we want to return -ESTALE, but in the ->lookup() path, its a bug in the fs if the no_formal_ino doesn't match and thus we can withdraw in this case. In order to later fix bz #201012, we need to be able to look up an inode without knowing no_formal_ino, as the only information that is known to us is the on-disk location of the inode in question. This patch will also help us to fix bz #236099 at a later date by cleaning up a lot of the code in that area. There are no user visible changes as a result of this patch and there are no changes to the on-disk format either. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
245 lines
6.8 KiB
C
245 lines
6.8 KiB
C
/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2006 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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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/completion.h>
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#include <linux/buffer_head.h>
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#include <linux/crc32.h>
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#include <linux/gfs2_ondisk.h>
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#include <linux/lm_interface.h>
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#include <asm/uaccess.h>
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#include "gfs2.h"
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#include "incore.h"
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#include "glock.h"
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#include "lm.h"
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#include "util.h"
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struct kmem_cache *gfs2_glock_cachep __read_mostly;
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struct kmem_cache *gfs2_inode_cachep __read_mostly;
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struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
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void gfs2_assert_i(struct gfs2_sbd *sdp)
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{
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printk(KERN_EMERG "GFS2: fsid=%s: fatal assertion failed\n",
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sdp->sd_fsname);
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}
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/**
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* gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
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* Returns: -1 if this call withdrew the machine,
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* -2 if it was already withdrawn
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*/
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int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
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const char *function, char *file, unsigned int line)
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{
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int me;
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me = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: assertion \"%s\" failed\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname, assertion,
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sdp->sd_fsname, function, file, line);
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dump_stack();
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return (me) ? -1 : -2;
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}
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/**
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* gfs2_assert_warn_i - Print a message to the console if @assertion is false
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* Returns: -1 if we printed something
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* -2 if we didn't
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*/
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int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
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const char *function, char *file, unsigned int line)
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{
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if (time_before(jiffies,
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sdp->sd_last_warning +
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gfs2_tune_get(sdp, gt_complain_secs) * HZ))
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return -2;
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printk(KERN_WARNING
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"GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname, assertion,
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sdp->sd_fsname, function, file, line);
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if (sdp->sd_args.ar_debug)
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BUG();
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else
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dump_stack();
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sdp->sd_last_warning = jiffies;
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return -1;
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}
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/**
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* gfs2_consist_i - Flag a filesystem consistency error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* 0 if it was already withdrawn
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*/
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int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function,
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char *file, unsigned int line)
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{
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int rv;
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rv = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: filesystem consistency error\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, function, file, line);
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return rv;
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}
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/**
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* gfs2_consist_inode_i - Flag an inode consistency error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* 0 if it was already withdrawn
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*/
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int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
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const char *function, char *file, unsigned int line)
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{
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struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
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int rv;
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rv = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: filesystem consistency error\n"
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"GFS2: fsid=%s: inode = %llu %llu\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino,
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(unsigned long long)ip->i_no_addr,
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sdp->sd_fsname, function, file, line);
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return rv;
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}
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/**
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* gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* 0 if it was already withdrawn
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*/
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int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
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const char *function, char *file, unsigned int line)
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{
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struct gfs2_sbd *sdp = rgd->rd_sbd;
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int rv;
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rv = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: filesystem consistency error\n"
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"GFS2: fsid=%s: RG = %llu\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, (unsigned long long)rgd->rd_ri.ri_addr,
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sdp->sd_fsname, function, file, line);
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return rv;
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}
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/**
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* gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* -2 if it was already withdrawn
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*/
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int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
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const char *type, const char *function, char *file,
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unsigned int line)
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{
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int me;
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me = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: invalid metadata block\n"
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"GFS2: fsid=%s: bh = %llu (%s)\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type,
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sdp->sd_fsname, function, file, line);
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return (me) ? -1 : -2;
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}
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/**
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* gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* -2 if it was already withdrawn
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*/
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int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
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u16 type, u16 t, const char *function,
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char *file, unsigned int line)
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{
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int me;
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me = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: invalid metadata block\n"
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"GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t,
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sdp->sd_fsname, function, file, line);
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return (me) ? -1 : -2;
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}
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/**
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* gfs2_io_error_i - Flag an I/O error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* 0 if it was already withdrawn
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*/
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int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file,
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unsigned int line)
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{
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int rv;
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rv = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: I/O error\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, function, file, line);
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return rv;
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}
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/**
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* gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* 0 if it was already withdrawn
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*/
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int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
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const char *function, char *file, unsigned int line)
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{
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int rv;
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rv = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: I/O error\n"
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"GFS2: fsid=%s: block = %llu\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, (unsigned long long)bh->b_blocknr,
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sdp->sd_fsname, function, file, line);
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return rv;
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}
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void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
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unsigned int bit, int new_value)
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{
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unsigned int c, o, b = bit;
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int old_value;
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c = b / (8 * PAGE_SIZE);
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b %= 8 * PAGE_SIZE;
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o = b / 8;
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b %= 8;
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old_value = (bitmap[c][o] & (1 << b));
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gfs2_assert_withdraw(sdp, !old_value != !new_value);
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if (new_value)
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bitmap[c][o] |= 1 << b;
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else
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bitmap[c][o] &= ~(1 << b);
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}
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