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891a8e9335
Some items picked up through automated code analysis. A few bits of unreachable code and two unchecked return values. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
782 lines
19 KiB
C
782 lines
19 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/sched.h>
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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/gfs2_ondisk.h>
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#include <linux/bio.h>
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#include <linux/fs.h>
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#include "gfs2.h"
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#include "incore.h"
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#include "inode.h"
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#include "glock.h"
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#include "log.h"
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#include "lops.h"
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#include "meta_io.h"
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#include "recovery.h"
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#include "rgrp.h"
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#include "trans.h"
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#include "util.h"
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#include "trace_gfs2.h"
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/**
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* gfs2_pin - Pin a buffer in memory
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* @sdp: The superblock
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* @bh: The buffer to be pinned
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*
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* The log lock must be held when calling this function
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*/
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static void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh)
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{
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struct gfs2_bufdata *bd;
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BUG_ON(!current->journal_info);
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clear_buffer_dirty(bh);
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if (test_set_buffer_pinned(bh))
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gfs2_assert_withdraw(sdp, 0);
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if (!buffer_uptodate(bh))
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gfs2_io_error_bh(sdp, bh);
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bd = bh->b_private;
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/* If this buffer is in the AIL and it has already been written
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* to in-place disk block, remove it from the AIL.
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*/
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spin_lock(&sdp->sd_ail_lock);
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if (bd->bd_ail)
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list_move(&bd->bd_ail_st_list, &bd->bd_ail->ai_ail2_list);
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spin_unlock(&sdp->sd_ail_lock);
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get_bh(bh);
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atomic_inc(&sdp->sd_log_pinned);
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trace_gfs2_pin(bd, 1);
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}
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static bool buffer_is_rgrp(const struct gfs2_bufdata *bd)
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{
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return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP;
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}
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static void maybe_release_space(struct gfs2_bufdata *bd)
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{
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struct gfs2_glock *gl = bd->bd_gl;
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struct gfs2_sbd *sdp = gl->gl_sbd;
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struct gfs2_rgrpd *rgd = gl->gl_object;
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unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number;
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struct gfs2_bitmap *bi = rgd->rd_bits + index;
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if (bi->bi_clone == 0)
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return;
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if (sdp->sd_args.ar_discard)
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gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi);
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memcpy(bi->bi_clone + bi->bi_offset,
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bd->bd_bh->b_data + bi->bi_offset, bi->bi_len);
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clear_bit(GBF_FULL, &bi->bi_flags);
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rgd->rd_free_clone = rgd->rd_free;
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}
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/**
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* gfs2_unpin - Unpin a buffer
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* @sdp: the filesystem the buffer belongs to
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* @bh: The buffer to unpin
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* @ai:
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* @flags: The inode dirty flags
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*
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*/
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static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh,
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struct gfs2_ail *ai)
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{
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struct gfs2_bufdata *bd = bh->b_private;
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BUG_ON(!buffer_uptodate(bh));
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BUG_ON(!buffer_pinned(bh));
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lock_buffer(bh);
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mark_buffer_dirty(bh);
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clear_buffer_pinned(bh);
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if (buffer_is_rgrp(bd))
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maybe_release_space(bd);
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spin_lock(&sdp->sd_ail_lock);
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if (bd->bd_ail) {
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list_del(&bd->bd_ail_st_list);
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brelse(bh);
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} else {
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struct gfs2_glock *gl = bd->bd_gl;
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list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list);
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atomic_inc(&gl->gl_ail_count);
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}
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bd->bd_ail = ai;
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list_add(&bd->bd_ail_st_list, &ai->ai_ail1_list);
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spin_unlock(&sdp->sd_ail_lock);
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clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
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trace_gfs2_pin(bd, 0);
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unlock_buffer(bh);
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atomic_dec(&sdp->sd_log_pinned);
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}
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static inline struct gfs2_log_descriptor *bh_log_desc(struct buffer_head *bh)
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{
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return (struct gfs2_log_descriptor *)bh->b_data;
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}
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static inline __be64 *bh_log_ptr(struct buffer_head *bh)
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{
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struct gfs2_log_descriptor *ld = bh_log_desc(bh);
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return (__force __be64 *)(ld + 1);
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}
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static inline __be64 *bh_ptr_end(struct buffer_head *bh)
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{
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return (__force __be64 *)(bh->b_data + bh->b_size);
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}
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static struct buffer_head *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type)
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{
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struct buffer_head *bh = gfs2_log_get_buf(sdp);
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struct gfs2_log_descriptor *ld = bh_log_desc(bh);
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ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
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ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD);
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ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD);
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ld->ld_type = cpu_to_be32(ld_type);
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ld->ld_length = 0;
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ld->ld_data1 = 0;
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ld->ld_data2 = 0;
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memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved));
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return bh;
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}
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static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
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{
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struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
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struct gfs2_meta_header *mh;
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struct gfs2_trans *tr;
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lock_buffer(bd->bd_bh);
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gfs2_log_lock(sdp);
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if (!list_empty(&bd->bd_list_tr))
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goto out;
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tr = current->journal_info;
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tr->tr_touched = 1;
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tr->tr_num_buf++;
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list_add(&bd->bd_list_tr, &tr->tr_list_buf);
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if (!list_empty(&le->le_list))
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goto out;
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set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
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set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
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gfs2_meta_check(sdp, bd->bd_bh);
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gfs2_pin(sdp, bd->bd_bh);
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mh = (struct gfs2_meta_header *)bd->bd_bh->b_data;
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mh->__pad0 = cpu_to_be64(0);
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mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid);
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sdp->sd_log_num_buf++;
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list_add(&le->le_list, &sdp->sd_log_le_buf);
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tr->tr_num_buf_new++;
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out:
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gfs2_log_unlock(sdp);
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unlock_buffer(bd->bd_bh);
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}
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static void buf_lo_before_commit(struct gfs2_sbd *sdp)
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{
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struct buffer_head *bh;
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struct gfs2_log_descriptor *ld;
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struct gfs2_bufdata *bd1 = NULL, *bd2;
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unsigned int total;
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unsigned int limit;
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unsigned int num;
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unsigned n;
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__be64 *ptr;
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limit = buf_limit(sdp);
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/* for 4k blocks, limit = 503 */
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gfs2_log_lock(sdp);
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total = sdp->sd_log_num_buf;
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bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list);
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while(total) {
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num = total;
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if (total > limit)
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num = limit;
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gfs2_log_unlock(sdp);
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bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_METADATA);
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gfs2_log_lock(sdp);
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ld = bh_log_desc(bh);
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ptr = bh_log_ptr(bh);
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ld->ld_length = cpu_to_be32(num + 1);
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ld->ld_data1 = cpu_to_be32(num);
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n = 0;
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list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf,
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bd_le.le_list) {
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*ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr);
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if (++n >= num)
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break;
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}
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gfs2_log_unlock(sdp);
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submit_bh(WRITE_SYNC, bh);
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gfs2_log_lock(sdp);
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n = 0;
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list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf,
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bd_le.le_list) {
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get_bh(bd2->bd_bh);
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gfs2_log_unlock(sdp);
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lock_buffer(bd2->bd_bh);
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bh = gfs2_log_fake_buf(sdp, bd2->bd_bh);
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submit_bh(WRITE_SYNC, bh);
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gfs2_log_lock(sdp);
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if (++n >= num)
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break;
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}
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BUG_ON(total < num);
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total -= num;
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}
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gfs2_log_unlock(sdp);
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}
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static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
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{
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struct list_head *head = &sdp->sd_log_le_buf;
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struct gfs2_bufdata *bd;
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while (!list_empty(head)) {
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bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
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list_del_init(&bd->bd_le.le_list);
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sdp->sd_log_num_buf--;
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gfs2_unpin(sdp, bd->bd_bh, ai);
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}
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gfs2_assert_warn(sdp, !sdp->sd_log_num_buf);
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}
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static void buf_lo_before_scan(struct gfs2_jdesc *jd,
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struct gfs2_log_header_host *head, int pass)
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{
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struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
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if (pass != 0)
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return;
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sdp->sd_found_blocks = 0;
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sdp->sd_replayed_blocks = 0;
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}
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static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
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struct gfs2_log_descriptor *ld, __be64 *ptr,
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int pass)
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{
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struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
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struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
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struct gfs2_glock *gl = ip->i_gl;
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unsigned int blks = be32_to_cpu(ld->ld_data1);
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struct buffer_head *bh_log, *bh_ip;
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u64 blkno;
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int error = 0;
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if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA)
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return 0;
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gfs2_replay_incr_blk(sdp, &start);
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for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
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blkno = be64_to_cpu(*ptr++);
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sdp->sd_found_blocks++;
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if (gfs2_revoke_check(sdp, blkno, start))
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continue;
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error = gfs2_replay_read_block(jd, start, &bh_log);
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if (error)
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return error;
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bh_ip = gfs2_meta_new(gl, blkno);
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memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size);
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if (gfs2_meta_check(sdp, bh_ip))
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error = -EIO;
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else
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mark_buffer_dirty(bh_ip);
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brelse(bh_log);
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brelse(bh_ip);
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if (error)
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break;
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sdp->sd_replayed_blocks++;
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}
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return error;
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}
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static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
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{
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struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
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struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
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if (error) {
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gfs2_meta_sync(ip->i_gl);
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return;
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}
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if (pass != 1)
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return;
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gfs2_meta_sync(ip->i_gl);
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fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n",
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jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks);
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}
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static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
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{
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struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
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struct gfs2_glock *gl = bd->bd_gl;
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struct gfs2_trans *tr;
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tr = current->journal_info;
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tr->tr_touched = 1;
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tr->tr_num_revoke++;
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sdp->sd_log_num_revoke++;
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atomic_inc(&gl->gl_revokes);
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set_bit(GLF_LFLUSH, &gl->gl_flags);
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list_add(&le->le_list, &sdp->sd_log_le_revoke);
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}
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static void revoke_lo_before_commit(struct gfs2_sbd *sdp)
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{
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struct gfs2_log_descriptor *ld;
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struct gfs2_meta_header *mh;
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struct buffer_head *bh;
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unsigned int offset;
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struct list_head *head = &sdp->sd_log_le_revoke;
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struct gfs2_bufdata *bd;
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if (!sdp->sd_log_num_revoke)
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return;
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bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE);
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ld = bh_log_desc(bh);
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ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke,
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sizeof(u64)));
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ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke);
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offset = sizeof(struct gfs2_log_descriptor);
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list_for_each_entry(bd, head, bd_le.le_list) {
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sdp->sd_log_num_revoke--;
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if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) {
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submit_bh(WRITE_SYNC, bh);
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bh = gfs2_log_get_buf(sdp);
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mh = (struct gfs2_meta_header *)bh->b_data;
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mh->mh_magic = cpu_to_be32(GFS2_MAGIC);
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mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB);
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mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB);
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offset = sizeof(struct gfs2_meta_header);
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}
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*(__be64 *)(bh->b_data + offset) = cpu_to_be64(bd->bd_blkno);
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offset += sizeof(u64);
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}
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gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke);
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submit_bh(WRITE_SYNC, bh);
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}
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static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
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{
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struct list_head *head = &sdp->sd_log_le_revoke;
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struct gfs2_bufdata *bd;
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struct gfs2_glock *gl;
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while (!list_empty(head)) {
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bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
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list_del_init(&bd->bd_le.le_list);
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gl = bd->bd_gl;
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atomic_dec(&gl->gl_revokes);
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clear_bit(GLF_LFLUSH, &gl->gl_flags);
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kmem_cache_free(gfs2_bufdata_cachep, bd);
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}
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}
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static void revoke_lo_before_scan(struct gfs2_jdesc *jd,
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struct gfs2_log_header_host *head, int pass)
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{
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struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
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if (pass != 0)
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return;
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sdp->sd_found_revokes = 0;
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sdp->sd_replay_tail = head->lh_tail;
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}
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static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
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struct gfs2_log_descriptor *ld, __be64 *ptr,
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int pass)
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{
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struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
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unsigned int blks = be32_to_cpu(ld->ld_length);
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unsigned int revokes = be32_to_cpu(ld->ld_data1);
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struct buffer_head *bh;
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unsigned int offset;
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u64 blkno;
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int first = 1;
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int error;
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if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE)
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return 0;
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offset = sizeof(struct gfs2_log_descriptor);
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for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
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error = gfs2_replay_read_block(jd, start, &bh);
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if (error)
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return error;
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if (!first)
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gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB);
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while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) {
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blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset));
|
|
|
|
error = gfs2_revoke_add(sdp, blkno, start);
|
|
if (error < 0) {
|
|
brelse(bh);
|
|
return error;
|
|
}
|
|
else if (error)
|
|
sdp->sd_found_revokes++;
|
|
|
|
if (!--revokes)
|
|
break;
|
|
offset += sizeof(u64);
|
|
}
|
|
|
|
brelse(bh);
|
|
offset = sizeof(struct gfs2_meta_header);
|
|
first = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
|
|
{
|
|
struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
|
|
|
|
if (error) {
|
|
gfs2_revoke_clean(sdp);
|
|
return;
|
|
}
|
|
if (pass != 1)
|
|
return;
|
|
|
|
fs_info(sdp, "jid=%u: Found %u revoke tags\n",
|
|
jd->jd_jid, sdp->sd_found_revokes);
|
|
|
|
gfs2_revoke_clean(sdp);
|
|
}
|
|
|
|
/**
|
|
* databuf_lo_add - Add a databuf to the transaction.
|
|
*
|
|
* This is used in two distinct cases:
|
|
* i) In ordered write mode
|
|
* We put the data buffer on a list so that we can ensure that its
|
|
* synced to disk at the right time
|
|
* ii) In journaled data mode
|
|
* We need to journal the data block in the same way as metadata in
|
|
* the functions above. The difference is that here we have a tag
|
|
* which is two __be64's being the block number (as per meta data)
|
|
* and a flag which says whether the data block needs escaping or
|
|
* not. This means we need a new log entry for each 251 or so data
|
|
* blocks, which isn't an enormous overhead but twice as much as
|
|
* for normal metadata blocks.
|
|
*/
|
|
static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
|
|
{
|
|
struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
|
|
struct gfs2_trans *tr = current->journal_info;
|
|
struct address_space *mapping = bd->bd_bh->b_page->mapping;
|
|
struct gfs2_inode *ip = GFS2_I(mapping->host);
|
|
|
|
lock_buffer(bd->bd_bh);
|
|
gfs2_log_lock(sdp);
|
|
if (tr) {
|
|
if (!list_empty(&bd->bd_list_tr))
|
|
goto out;
|
|
tr->tr_touched = 1;
|
|
if (gfs2_is_jdata(ip)) {
|
|
tr->tr_num_buf++;
|
|
list_add(&bd->bd_list_tr, &tr->tr_list_buf);
|
|
}
|
|
}
|
|
if (!list_empty(&le->le_list))
|
|
goto out;
|
|
|
|
set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
|
|
set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
|
|
if (gfs2_is_jdata(ip)) {
|
|
gfs2_pin(sdp, bd->bd_bh);
|
|
tr->tr_num_databuf_new++;
|
|
sdp->sd_log_num_databuf++;
|
|
list_add_tail(&le->le_list, &sdp->sd_log_le_databuf);
|
|
} else {
|
|
list_add_tail(&le->le_list, &sdp->sd_log_le_ordered);
|
|
}
|
|
out:
|
|
gfs2_log_unlock(sdp);
|
|
unlock_buffer(bd->bd_bh);
|
|
}
|
|
|
|
static void gfs2_check_magic(struct buffer_head *bh)
|
|
{
|
|
void *kaddr;
|
|
__be32 *ptr;
|
|
|
|
clear_buffer_escaped(bh);
|
|
kaddr = kmap_atomic(bh->b_page, KM_USER0);
|
|
ptr = kaddr + bh_offset(bh);
|
|
if (*ptr == cpu_to_be32(GFS2_MAGIC))
|
|
set_buffer_escaped(bh);
|
|
kunmap_atomic(kaddr, KM_USER0);
|
|
}
|
|
|
|
static void gfs2_write_blocks(struct gfs2_sbd *sdp, struct buffer_head *bh,
|
|
struct list_head *list, struct list_head *done,
|
|
unsigned int n)
|
|
{
|
|
struct buffer_head *bh1;
|
|
struct gfs2_log_descriptor *ld;
|
|
struct gfs2_bufdata *bd;
|
|
__be64 *ptr;
|
|
|
|
if (!bh)
|
|
return;
|
|
|
|
ld = bh_log_desc(bh);
|
|
ld->ld_length = cpu_to_be32(n + 1);
|
|
ld->ld_data1 = cpu_to_be32(n);
|
|
|
|
ptr = bh_log_ptr(bh);
|
|
|
|
get_bh(bh);
|
|
submit_bh(WRITE_SYNC, bh);
|
|
gfs2_log_lock(sdp);
|
|
while(!list_empty(list)) {
|
|
bd = list_entry(list->next, struct gfs2_bufdata, bd_le.le_list);
|
|
list_move_tail(&bd->bd_le.le_list, done);
|
|
get_bh(bd->bd_bh);
|
|
while (be64_to_cpu(*ptr) != bd->bd_bh->b_blocknr) {
|
|
gfs2_log_incr_head(sdp);
|
|
ptr += 2;
|
|
}
|
|
gfs2_log_unlock(sdp);
|
|
lock_buffer(bd->bd_bh);
|
|
if (buffer_escaped(bd->bd_bh)) {
|
|
void *kaddr;
|
|
bh1 = gfs2_log_get_buf(sdp);
|
|
kaddr = kmap_atomic(bd->bd_bh->b_page, KM_USER0);
|
|
memcpy(bh1->b_data, kaddr + bh_offset(bd->bd_bh),
|
|
bh1->b_size);
|
|
kunmap_atomic(kaddr, KM_USER0);
|
|
*(__be32 *)bh1->b_data = 0;
|
|
clear_buffer_escaped(bd->bd_bh);
|
|
unlock_buffer(bd->bd_bh);
|
|
brelse(bd->bd_bh);
|
|
} else {
|
|
bh1 = gfs2_log_fake_buf(sdp, bd->bd_bh);
|
|
}
|
|
submit_bh(WRITE_SYNC, bh1);
|
|
gfs2_log_lock(sdp);
|
|
ptr += 2;
|
|
}
|
|
gfs2_log_unlock(sdp);
|
|
brelse(bh);
|
|
}
|
|
|
|
/**
|
|
* databuf_lo_before_commit - Scan the data buffers, writing as we go
|
|
*
|
|
*/
|
|
|
|
static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
|
|
{
|
|
struct gfs2_bufdata *bd = NULL;
|
|
struct buffer_head *bh = NULL;
|
|
unsigned int n = 0;
|
|
__be64 *ptr = NULL, *end = NULL;
|
|
LIST_HEAD(processed);
|
|
LIST_HEAD(in_progress);
|
|
|
|
gfs2_log_lock(sdp);
|
|
while (!list_empty(&sdp->sd_log_le_databuf)) {
|
|
if (ptr == end) {
|
|
gfs2_log_unlock(sdp);
|
|
gfs2_write_blocks(sdp, bh, &in_progress, &processed, n);
|
|
n = 0;
|
|
bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_JDATA);
|
|
ptr = bh_log_ptr(bh);
|
|
end = bh_ptr_end(bh) - 1;
|
|
gfs2_log_lock(sdp);
|
|
continue;
|
|
}
|
|
bd = list_entry(sdp->sd_log_le_databuf.next, struct gfs2_bufdata, bd_le.le_list);
|
|
list_move_tail(&bd->bd_le.le_list, &in_progress);
|
|
gfs2_check_magic(bd->bd_bh);
|
|
*ptr++ = cpu_to_be64(bd->bd_bh->b_blocknr);
|
|
*ptr++ = cpu_to_be64(buffer_escaped(bh) ? 1 : 0);
|
|
n++;
|
|
}
|
|
gfs2_log_unlock(sdp);
|
|
gfs2_write_blocks(sdp, bh, &in_progress, &processed, n);
|
|
gfs2_log_lock(sdp);
|
|
list_splice(&processed, &sdp->sd_log_le_databuf);
|
|
gfs2_log_unlock(sdp);
|
|
}
|
|
|
|
static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
|
|
struct gfs2_log_descriptor *ld,
|
|
__be64 *ptr, int pass)
|
|
{
|
|
struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
|
|
struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
|
|
struct gfs2_glock *gl = ip->i_gl;
|
|
unsigned int blks = be32_to_cpu(ld->ld_data1);
|
|
struct buffer_head *bh_log, *bh_ip;
|
|
u64 blkno;
|
|
u64 esc;
|
|
int error = 0;
|
|
|
|
if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA)
|
|
return 0;
|
|
|
|
gfs2_replay_incr_blk(sdp, &start);
|
|
for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
|
|
blkno = be64_to_cpu(*ptr++);
|
|
esc = be64_to_cpu(*ptr++);
|
|
|
|
sdp->sd_found_blocks++;
|
|
|
|
if (gfs2_revoke_check(sdp, blkno, start))
|
|
continue;
|
|
|
|
error = gfs2_replay_read_block(jd, start, &bh_log);
|
|
if (error)
|
|
return error;
|
|
|
|
bh_ip = gfs2_meta_new(gl, blkno);
|
|
memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size);
|
|
|
|
/* Unescape */
|
|
if (esc) {
|
|
__be32 *eptr = (__be32 *)bh_ip->b_data;
|
|
*eptr = cpu_to_be32(GFS2_MAGIC);
|
|
}
|
|
mark_buffer_dirty(bh_ip);
|
|
|
|
brelse(bh_log);
|
|
brelse(bh_ip);
|
|
|
|
sdp->sd_replayed_blocks++;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
/* FIXME: sort out accounting for log blocks etc. */
|
|
|
|
static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
|
|
{
|
|
struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
|
|
struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
|
|
|
|
if (error) {
|
|
gfs2_meta_sync(ip->i_gl);
|
|
return;
|
|
}
|
|
if (pass != 1)
|
|
return;
|
|
|
|
/* data sync? */
|
|
gfs2_meta_sync(ip->i_gl);
|
|
|
|
fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n",
|
|
jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks);
|
|
}
|
|
|
|
static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
|
|
{
|
|
struct list_head *head = &sdp->sd_log_le_databuf;
|
|
struct gfs2_bufdata *bd;
|
|
|
|
while (!list_empty(head)) {
|
|
bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
|
|
list_del_init(&bd->bd_le.le_list);
|
|
sdp->sd_log_num_databuf--;
|
|
gfs2_unpin(sdp, bd->bd_bh, ai);
|
|
}
|
|
gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf);
|
|
}
|
|
|
|
|
|
const struct gfs2_log_operations gfs2_buf_lops = {
|
|
.lo_add = buf_lo_add,
|
|
.lo_before_commit = buf_lo_before_commit,
|
|
.lo_after_commit = buf_lo_after_commit,
|
|
.lo_before_scan = buf_lo_before_scan,
|
|
.lo_scan_elements = buf_lo_scan_elements,
|
|
.lo_after_scan = buf_lo_after_scan,
|
|
.lo_name = "buf",
|
|
};
|
|
|
|
const struct gfs2_log_operations gfs2_revoke_lops = {
|
|
.lo_add = revoke_lo_add,
|
|
.lo_before_commit = revoke_lo_before_commit,
|
|
.lo_after_commit = revoke_lo_after_commit,
|
|
.lo_before_scan = revoke_lo_before_scan,
|
|
.lo_scan_elements = revoke_lo_scan_elements,
|
|
.lo_after_scan = revoke_lo_after_scan,
|
|
.lo_name = "revoke",
|
|
};
|
|
|
|
const struct gfs2_log_operations gfs2_rg_lops = {
|
|
.lo_name = "rg",
|
|
};
|
|
|
|
const struct gfs2_log_operations gfs2_databuf_lops = {
|
|
.lo_add = databuf_lo_add,
|
|
.lo_before_commit = databuf_lo_before_commit,
|
|
.lo_after_commit = databuf_lo_after_commit,
|
|
.lo_scan_elements = databuf_lo_scan_elements,
|
|
.lo_after_scan = databuf_lo_after_scan,
|
|
.lo_name = "databuf",
|
|
};
|
|
|
|
const struct gfs2_log_operations *gfs2_log_ops[] = {
|
|
&gfs2_databuf_lops,
|
|
&gfs2_buf_lops,
|
|
&gfs2_rg_lops,
|
|
&gfs2_revoke_lops,
|
|
NULL,
|
|
};
|
|
|