/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License v.2.
+ * of the GNU General Public License version 2.
*/
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
-#include <asm/semaphore.h>
+#include <linux/gfs2_ondisk.h>
+#include <linux/bio.h>
+#include <linux/fs.h>
#include "gfs2.h"
+#include "incore.h"
+#include "inode.h"
#include "glock.h"
#include "log.h"
#include "lops.h"
#include "recovery.h"
#include "rgrp.h"
#include "trans.h"
+#include "util.h"
+#include "trace_gfs2.h"
-static void glock_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
+/**
+ * gfs2_pin - Pin a buffer in memory
+ * @sdp: The superblock
+ * @bh: The buffer to be pinned
+ *
+ * The log lock must be held when calling this function
+ */
+static void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh)
{
- struct gfs2_glock *gl;
+ struct gfs2_bufdata *bd;
- get_transaction->tr_touched = 1;
+ gfs2_assert_withdraw(sdp, test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags));
- if (!list_empty(&le->le_list))
- return;
+ clear_buffer_dirty(bh);
+ if (test_set_buffer_pinned(bh))
+ gfs2_assert_withdraw(sdp, 0);
+ if (!buffer_uptodate(bh))
+ gfs2_io_error_bh(sdp, bh);
+ bd = bh->b_private;
+ /* If this buffer is in the AIL and it has already been written
+ * to in-place disk block, remove it from the AIL.
+ */
+ if (bd->bd_ail)
+ list_move(&bd->bd_ail_st_list, &bd->bd_ail->ai_ail2_list);
+ get_bh(bh);
+ trace_gfs2_pin(bd, 1);
+}
- gl = container_of(le, struct gfs2_glock, gl_le);
- if (gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl)))
- return;
- gfs2_glock_hold(gl);
- set_bit(GLF_DIRTY, &gl->gl_flags);
+/**
+ * gfs2_unpin - Unpin a buffer
+ * @sdp: the filesystem the buffer belongs to
+ * @bh: The buffer to unpin
+ * @ai:
+ *
+ */
+
+static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh,
+ struct gfs2_ail *ai)
+{
+ struct gfs2_bufdata *bd = bh->b_private;
+
+ gfs2_assert_withdraw(sdp, buffer_uptodate(bh));
+
+ if (!buffer_pinned(bh))
+ gfs2_assert_withdraw(sdp, 0);
+
+ lock_buffer(bh);
+ mark_buffer_dirty(bh);
+ clear_buffer_pinned(bh);
gfs2_log_lock(sdp);
- sdp->sd_log_num_gl++;
- list_add(&le->le_list, &sdp->sd_log_le_gl);
+ if (bd->bd_ail) {
+ list_del(&bd->bd_ail_st_list);
+ brelse(bh);
+ } else {
+ struct gfs2_glock *gl = bd->bd_gl;
+ list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list);
+ atomic_inc(&gl->gl_ail_count);
+ }
+ bd->bd_ail = ai;
+ list_add(&bd->bd_ail_st_list, &ai->ai_ail1_list);
+ clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
+ trace_gfs2_pin(bd, 0);
gfs2_log_unlock(sdp);
+ unlock_buffer(bh);
}
-static void glock_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
+
+static inline struct gfs2_log_descriptor *bh_log_desc(struct buffer_head *bh)
{
- struct list_head *head = &sdp->sd_log_le_gl;
- struct gfs2_glock *gl;
+ return (struct gfs2_log_descriptor *)bh->b_data;
+}
- while (!list_empty(head)) {
- gl = list_entry(head->next, struct gfs2_glock, gl_le.le_list);
- list_del_init(&gl->gl_le.le_list);
- sdp->sd_log_num_gl--;
+static inline __be64 *bh_log_ptr(struct buffer_head *bh)
+{
+ struct gfs2_log_descriptor *ld = bh_log_desc(bh);
+ return (__force __be64 *)(ld + 1);
+}
- gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl));
- gfs2_glock_put(gl);
- }
- gfs2_assert_warn(sdp, !sdp->sd_log_num_gl);
+static inline __be64 *bh_ptr_end(struct buffer_head *bh)
+{
+ return (__force __be64 *)(bh->b_data + bh->b_size);
+}
+
+
+static struct buffer_head *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type)
+{
+ struct buffer_head *bh = gfs2_log_get_buf(sdp);
+ struct gfs2_log_descriptor *ld = bh_log_desc(bh);
+ ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
+ ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD);
+ ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD);
+ ld->ld_type = cpu_to_be32(ld_type);
+ ld->ld_length = 0;
+ ld->ld_data1 = 0;
+ ld->ld_data2 = 0;
+ memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved));
+ return bh;
}
static void buf_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;
+ lock_buffer(bd->bd_bh);
+ gfs2_log_lock(sdp);
if (!list_empty(&bd->bd_list_tr))
- return;
-
- tr = get_transaction;
+ goto out;
+ tr = current->journal_info;
tr->tr_touched = 1;
tr->tr_num_buf++;
list_add(&bd->bd_list_tr, &tr->tr_list_buf);
-
if (!list_empty(&le->le_list))
- return;
-
- gfs2_trans_add_gl(bd->bd_gl);
-
+ goto out;
+ set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
+ set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
gfs2_meta_check(sdp, bd->bd_bh);
gfs2_pin(sdp, bd->bd_bh);
-
- gfs2_log_lock(sdp);
sdp->sd_log_num_buf++;
list_add(&le->le_list, &sdp->sd_log_le_buf);
- gfs2_log_unlock(sdp);
-
tr->tr_num_buf_new++;
-}
-
-static void buf_lo_incore_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
-{
- struct list_head *head = &tr->tr_list_buf;
- struct gfs2_bufdata *bd;
-
- while (!list_empty(head)) {
- bd = list_entry(head->next, struct gfs2_bufdata, bd_list_tr);
- list_del_init(&bd->bd_list_tr);
- tr->tr_num_buf--;
- }
- gfs2_assert_warn(sdp, !tr->tr_num_buf);
+out:
+ gfs2_log_unlock(sdp);
+ unlock_buffer(bd->bd_bh);
}
static void buf_lo_before_commit(struct gfs2_sbd *sdp)
struct buffer_head *bh;
struct gfs2_log_descriptor *ld;
struct gfs2_bufdata *bd1 = NULL, *bd2;
- unsigned int total = sdp->sd_log_num_buf;
- unsigned int offset = sizeof(struct gfs2_log_descriptor);
+ unsigned int total;
unsigned int limit;
unsigned int num;
unsigned n;
__be64 *ptr;
- offset += (sizeof(__be64) - 1);
- offset &= ~(sizeof(__be64) - 1);
- limit = (sdp->sd_sb.sb_bsize - offset)/sizeof(__be64);
+ limit = buf_limit(sdp);
/* for 4k blocks, limit = 503 */
+ gfs2_log_lock(sdp);
+ total = sdp->sd_log_num_buf;
bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list);
while(total) {
num = total;
if (total > limit)
num = limit;
- bh = gfs2_log_get_buf(sdp);
- ld = (struct gfs2_log_descriptor *)bh->b_data;
- ptr = (__be64 *)(bh->b_data + offset);
- ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
- ld->ld_header.mh_type = cpu_to_be16(GFS2_METATYPE_LD);
- ld->ld_header.mh_format = cpu_to_be16(GFS2_FORMAT_LD);
- ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_METADATA);
+ gfs2_log_unlock(sdp);
+ bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_METADATA);
+ gfs2_log_lock(sdp);
+ ld = bh_log_desc(bh);
+ ptr = bh_log_ptr(bh);
ld->ld_length = cpu_to_be32(num + 1);
ld->ld_data1 = cpu_to_be32(num);
- ld->ld_data2 = cpu_to_be32(0);
- memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved));
n = 0;
- list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf, bd_le.le_list) {
+ list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf,
+ bd_le.le_list) {
*ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr);
if (++n >= num)
break;
}
- set_buffer_dirty(bh);
- ll_rw_block(WRITE, 1, &bh);
+ gfs2_log_unlock(sdp);
+ submit_bh(WRITE_SYNC_PLUG, bh);
+ gfs2_log_lock(sdp);
n = 0;
- list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf, bd_le.le_list) {
+ list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf,
+ bd_le.le_list) {
+ get_bh(bd2->bd_bh);
+ gfs2_log_unlock(sdp);
+ lock_buffer(bd2->bd_bh);
bh = gfs2_log_fake_buf(sdp, bd2->bd_bh);
- set_buffer_dirty(bh);
- ll_rw_block(WRITE, 1, &bh);
+ submit_bh(WRITE_SYNC_PLUG, bh);
+ gfs2_log_lock(sdp);
if (++n >= num)
break;
}
+ BUG_ON(total < num);
total -= num;
}
+ gfs2_log_unlock(sdp);
}
static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
}
static void buf_lo_before_scan(struct gfs2_jdesc *jd,
- struct gfs2_log_header *head, int pass)
+ struct gfs2_log_header_host *head, int pass)
{
- struct gfs2_sbd *sdp = jd->jd_inode->i_sbd;
+ struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
if (pass != 0)
return;
struct gfs2_log_descriptor *ld, __be64 *ptr,
int pass)
{
- struct gfs2_sbd *sdp = jd->jd_inode->i_sbd;
- struct gfs2_glock *gl = jd->jd_inode->i_gl;
+ 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;
- uint64_t blkno;
+ u64 blkno;
int error = 0;
if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA)
continue;
error = gfs2_replay_read_block(jd, start, &bh_log);
- if (error)
- return error;
+ if (error)
+ return error;
bh_ip = gfs2_meta_new(gl, blkno);
memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size);
static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
{
- struct gfs2_sbd *sdp = jd->jd_inode->i_sbd;
+ struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
+ struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
if (error) {
- gfs2_meta_sync(jd->jd_inode->i_gl, DIO_START | DIO_WAIT);
+ gfs2_meta_sync(ip->i_gl);
return;
}
if (pass != 1)
return;
- gfs2_meta_sync(jd->jd_inode->i_gl, DIO_START | DIO_WAIT);
+ gfs2_meta_sync(ip->i_gl);
fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n",
jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks);
{
struct gfs2_trans *tr;
- tr = get_transaction;
+ tr = current->journal_info;
tr->tr_touched = 1;
tr->tr_num_revoke++;
-
- gfs2_log_lock(sdp);
sdp->sd_log_num_revoke++;
list_add(&le->le_list, &sdp->sd_log_le_revoke);
- gfs2_log_unlock(sdp);
}
static void revoke_lo_before_commit(struct gfs2_sbd *sdp)
struct buffer_head *bh;
unsigned int offset;
struct list_head *head = &sdp->sd_log_le_revoke;
- struct gfs2_revoke *rv;
+ struct gfs2_bufdata *bd;
if (!sdp->sd_log_num_revoke)
return;
- bh = gfs2_log_get_buf(sdp);
- ld = (struct gfs2_log_descriptor *)bh->b_data;
- ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
- ld->ld_header.mh_type = cpu_to_be16(GFS2_METATYPE_LD);
- ld->ld_header.mh_format = cpu_to_be16(GFS2_FORMAT_LD);
- ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_REVOKE);
- ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, sizeof(uint64_t)));
+ bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE);
+ ld = bh_log_desc(bh);
+ ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke,
+ sizeof(u64)));
ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke);
- ld->ld_data2 = cpu_to_be32(0);
- memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved));
offset = sizeof(struct gfs2_log_descriptor);
while (!list_empty(head)) {
- rv = list_entry(head->next, struct gfs2_revoke, rv_le.le_list);
- list_del(&rv->rv_le.le_list);
+ bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
+ list_del_init(&bd->bd_le.le_list);
sdp->sd_log_num_revoke--;
- if (offset + sizeof(uint64_t) > sdp->sd_sb.sb_bsize) {
- set_buffer_dirty(bh);
- ll_rw_block(WRITE, 1, &bh);
+ if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) {
+ submit_bh(WRITE_SYNC_PLUG, bh);
bh = gfs2_log_get_buf(sdp);
mh = (struct gfs2_meta_header *)bh->b_data;
mh->mh_magic = cpu_to_be32(GFS2_MAGIC);
- mh->mh_type = cpu_to_be16(GFS2_METATYPE_LB);
- mh->mh_format = cpu_to_be16(GFS2_FORMAT_LB);
+ mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB);
+ mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB);
offset = sizeof(struct gfs2_meta_header);
}
- *(__be64 *)(bh->b_data + offset) = cpu_to_be64(rv->rv_blkno);
- kfree(rv);
+ *(__be64 *)(bh->b_data + offset) = cpu_to_be64(bd->bd_blkno);
+ kmem_cache_free(gfs2_bufdata_cachep, bd);
- offset += sizeof(uint64_t);
+ offset += sizeof(u64);
}
gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke);
- set_buffer_dirty(bh);
- ll_rw_block(WRITE, 1, &bh);
+ submit_bh(WRITE_SYNC_PLUG, bh);
}
static void revoke_lo_before_scan(struct gfs2_jdesc *jd,
- struct gfs2_log_header *head, int pass)
+ struct gfs2_log_header_host *head, int pass)
{
- struct gfs2_sbd *sdp = jd->jd_inode->i_sbd;
+ struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
if (pass != 0)
return;
struct gfs2_log_descriptor *ld, __be64 *ptr,
int pass)
{
- struct gfs2_sbd *sdp = jd->jd_inode->i_sbd;
+ struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
unsigned int blks = be32_to_cpu(ld->ld_length);
unsigned int revokes = be32_to_cpu(ld->ld_data1);
struct buffer_head *bh;
unsigned int offset;
- uint64_t blkno;
+ u64 blkno;
int first = 1;
int error;
if (!first)
gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB);
- while (offset + sizeof(uint64_t) <= sdp->sd_sb.sb_bsize) {
+ while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) {
blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset));
error = gfs2_revoke_add(sdp, blkno, start);
- if (error < 0)
+ if (error < 0) {
+ brelse(bh);
return error;
+ }
else if (error)
sdp->sd_found_revokes++;
if (!--revokes)
break;
- offset += sizeof(uint64_t);
+ offset += sizeof(u64);
}
brelse(bh);
static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
{
- struct gfs2_sbd *sdp = jd->jd_inode->i_sbd;
+ struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
if (error) {
gfs2_revoke_clean(sdp);
static void rg_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
{
struct gfs2_rgrpd *rgd;
+ struct gfs2_trans *tr = current->journal_info;
- get_transaction->tr_touched = 1;
-
- if (!list_empty(&le->le_list))
- return;
+ tr->tr_touched = 1;
rgd = container_of(le, struct gfs2_rgrpd, rd_le);
- gfs2_rgrp_bh_hold(rgd);
gfs2_log_lock(sdp);
+ if (!list_empty(&le->le_list)){
+ gfs2_log_unlock(sdp);
+ return;
+ }
+ gfs2_rgrp_bh_hold(rgd);
sdp->sd_log_num_rg++;
list_add(&le->le_list, &sdp->sd_log_le_rg);
- gfs2_log_unlock(sdp);
+ gfs2_log_unlock(sdp);
}
static void rg_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
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 = get_transaction;
+ struct gfs2_trans *tr = current->journal_info;
struct address_space *mapping = bd->bd_bh->b_page->mapping;
- struct gfs2_inode *ip = get_v2ip(mapping->host);
+ struct gfs2_inode *ip = GFS2_I(mapping->host);
- tr->tr_touched = 1;
- if (!list_empty(&bd->bd_list_tr) &&
- (ip->i_di.di_flags & GFS2_DIF_JDATA)) {
- tr->tr_num_buf++;
- gfs2_trans_add_gl(bd->bd_gl);
- list_add(&bd->bd_list_tr, &tr->tr_list_buf);
+ 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(&le->le_list, &sdp->sd_log_le_databuf);
} else {
- clear_buffer_pinned(bd->bd_bh);
+ list_add(&le->le_list, &sdp->sd_log_le_ordered);
}
- gfs2_log_lock(sdp);
- if (ip->i_di.di_flags & GFS2_DIF_JDATA)
- sdp->sd_log_num_jdata++;
- sdp->sd_log_num_databuf++;
- list_add(&le->le_list, &sdp->sd_log_le_databuf);
+out:
gfs2_log_unlock(sdp);
+ unlock_buffer(bd->bd_bh);
}
-static int gfs2_check_magic(struct buffer_head *bh)
+static void gfs2_check_magic(struct buffer_head *bh)
{
- struct page *page = bh->b_page;
void *kaddr;
__be32 *ptr;
- int rv = 0;
- kaddr = kmap_atomic(page, KM_USER0);
+ clear_buffer_escaped(bh);
+ kaddr = kmap_atomic(bh->b_page, KM_USER0);
ptr = kaddr + bh_offset(bh);
if (*ptr == cpu_to_be32(GFS2_MAGIC))
- rv = 1;
- kunmap_atomic(page, KM_USER0);
+ 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);
- return rv;
+ ptr = bh_log_ptr(bh);
+
+ get_bh(bh);
+ submit_bh(WRITE_SYNC_PLUG, 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_PLUG, 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
*
- * Here we scan through the lists of buffers and make the assumption
- * that any buffer thats been pinned is being journaled, and that
- * any unpinned buffer is an ordered write data buffer and therefore
- * will be written back rather than journaled.
*/
+
static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
{
- LIST_HEAD(started);
- struct gfs2_bufdata *bd1 = NULL, *bd2, *bdt;
+ struct gfs2_bufdata *bd = NULL;
struct buffer_head *bh = NULL;
- unsigned int offset = sizeof(struct gfs2_log_descriptor);
- struct gfs2_log_descriptor *ld;
- unsigned int limit;
- unsigned int total_dbuf = sdp->sd_log_num_databuf;
- unsigned int total_jdata = sdp->sd_log_num_jdata;
- unsigned int num, n;
- __be64 *ptr;
-
- offset += (2*sizeof(__be64) - 1);
- offset &= ~(2*sizeof(__be64) - 1);
- limit = (sdp->sd_sb.sb_bsize - offset)/sizeof(__be64);
+ unsigned int n = 0;
+ __be64 *ptr = NULL, *end = NULL;
+ LIST_HEAD(processed);
+ LIST_HEAD(in_progress);
- /* printk(KERN_INFO "totals: jdata=%u dbuf=%u\n", total_jdata, total_dbuf); */
- /*
- * Start writing ordered buffers, write journaled buffers
- * into the log along with a header
- */
- bd2 = bd1 = list_prepare_entry(bd1, &sdp->sd_log_le_databuf, bd_le.le_list);
- while(total_dbuf) {
- num = total_jdata;
- if (num > limit)
- num = limit;
- n = 0;
- list_for_each_entry_safe_continue(bd1, bdt, &sdp->sd_log_le_databuf, bd_le.le_list) {
+ 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);
- /* An ordered write buffer */
- if (bd1->bd_bh && !buffer_pinned(bd1->bd_bh)) {
- list_move(&bd1->bd_le.le_list, &started);
- if (bd1 == bd2) {
- bd2 = NULL;
- bd2 = list_prepare_entry(bd2, &sdp->sd_log_le_databuf, bd_le.le_list);
- }
- total_dbuf--;
- if (bd1->bd_bh) {
- get_bh(bd1->bd_bh);
- gfs2_log_unlock(sdp);
- if (buffer_dirty(bd1->bd_bh)) {
- wait_on_buffer(bd1->bd_bh);
- ll_rw_block(WRITE, 1, &bd1->bd_bh);
- }
- brelse(bd1->bd_bh);
- continue;
- }
- gfs2_log_unlock(sdp);
- continue;
- } else if (bd1->bd_bh) { /* A journaled buffer */
- int magic;
- gfs2_log_unlock(sdp);
- /* printk(KERN_INFO "journaled buffer\n"); */
- if (!bh) {
- bh = gfs2_log_get_buf(sdp);
- ld = (struct gfs2_log_descriptor *)bh->b_data;
- ptr = (__be64 *)(bh->b_data + offset);
- ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
- ld->ld_header.mh_type = cpu_to_be16(GFS2_METATYPE_LD);
- ld->ld_header.mh_format = cpu_to_be16(GFS2_FORMAT_LD);
- ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_JDATA);
- ld->ld_length = cpu_to_be32(num + 1);
- ld->ld_data1 = cpu_to_be32(num);
- ld->ld_data2 = cpu_to_be32(0);
- memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved));
- }
- magic = gfs2_check_magic(bd1->bd_bh);
- *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr);
- *ptr++ = cpu_to_be64((__u64)magic);
- clear_buffer_escaped(bd1->bd_bh);
- if (unlikely(magic != 0))
- set_buffer_escaped(bd1->bd_bh);
- if (n++ > num)
- break;
- }
- }
- if (bh) {
- set_buffer_dirty(bh);
- ll_rw_block(WRITE, 1, &bh);
- bh = NULL;
- }
- n = 0;
- /* printk(KERN_INFO "totals2: jdata=%u dbuf=%u\n", total_jdata, total_dbuf); */
- list_for_each_entry_continue(bd2, &sdp->sd_log_le_databuf, bd_le.le_list) {
- if (!bd2->bd_bh)
- continue;
- /* copy buffer if it needs escaping */
- if (unlikely(buffer_escaped(bd2->bd_bh))) {
- void *kaddr;
- struct page *page = bd2->bd_bh->b_page;
- bh = gfs2_log_get_buf(sdp);
- kaddr = kmap_atomic(page, KM_USER0);
- memcpy(bh->b_data, kaddr + bh_offset(bd2->bd_bh), sdp->sd_sb.sb_bsize);
- kunmap_atomic(page, KM_USER0);
- *(__be32 *)bh->b_data = 0;
- } else {
- bh = gfs2_log_fake_buf(sdp, bd2->bd_bh);
- }
- set_buffer_dirty(bh);
- ll_rw_block(WRITE, 1, &bh);
- if (++n >= num)
- break;
+ continue;
}
- bh = NULL;
- total_dbuf -= num;
- total_jdata -= num;
+ 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++;
}
- /* printk(KERN_INFO "wait on ordered data buffers\n"); */
- /* Wait on all ordered buffers */
- while (!list_empty(&started)) {
- bd1 = list_entry(started.next, struct gfs2_bufdata, bd_le.le_list);
- list_del(&bd1->bd_le.le_list);
- sdp->sd_log_num_databuf--;
-
- gfs2_log_lock(sdp);
- bh = bd1->bd_bh;
- if (bh) {
- set_v2bd(bh, NULL);
- gfs2_log_unlock(sdp);
- wait_on_buffer(bh);
- brelse(bh);
- } else
- gfs2_log_unlock(sdp);
-
- kfree(bd1);
- }
-
- /* printk(KERN_INFO "sd_log_num_databuf %u sd_log_num_jdata %u\n", sdp->sd_log_num_databuf, sdp->sd_log_num_jdata); */
- /* We've removed all the ordered write bufs here, so only jdata left */
- gfs2_assert_warn(sdp, sdp->sd_log_num_databuf == sdp->sd_log_num_jdata);
+ 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_sbd *sdp = jd->jd_inode->i_sbd;
- struct gfs2_glock *gl = jd->jd_inode->i_gl;
+ 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;
- uint64_t blkno;
- uint64_t esc;
+ u64 blkno;
+ u64 esc;
int error = 0;
if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA)
static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
{
- struct gfs2_sbd *sdp = jd->jd_inode->i_sbd;
+ struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
+ struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
if (error) {
- gfs2_meta_sync(jd->jd_inode->i_gl, DIO_START | DIO_WAIT);
+ gfs2_meta_sync(ip->i_gl);
return;
}
if (pass != 1)
return;
/* data sync? */
- gfs2_meta_sync(jd->jd_inode->i_gl, DIO_START | DIO_WAIT);
+ 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);
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--;
- sdp->sd_log_num_jdata--;
gfs2_unpin(sdp, bd->bd_bh, ai);
- brelse(bd->bd_bh);
- kfree(bd);
}
gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf);
- gfs2_assert_warn(sdp, !sdp->sd_log_num_jdata);
}
-struct gfs2_log_operations gfs2_glock_lops = {
- .lo_add = glock_lo_add,
- .lo_after_commit = glock_lo_after_commit,
- .lo_name = "glock"
-};
-
-struct gfs2_log_operations gfs2_buf_lops = {
+const struct gfs2_log_operations gfs2_buf_lops = {
.lo_add = buf_lo_add,
- .lo_incore_commit = buf_lo_incore_commit,
.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"
+ .lo_name = "buf",
};
-struct gfs2_log_operations gfs2_revoke_lops = {
+const struct gfs2_log_operations gfs2_revoke_lops = {
.lo_add = revoke_lo_add,
.lo_before_commit = revoke_lo_before_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"
+ .lo_name = "revoke",
};
-struct gfs2_log_operations gfs2_rg_lops = {
+const struct gfs2_log_operations gfs2_rg_lops = {
.lo_add = rg_lo_add,
.lo_after_commit = rg_lo_after_commit,
- .lo_name = "rg"
+ .lo_name = "rg",
};
-struct gfs2_log_operations gfs2_databuf_lops = {
+const struct gfs2_log_operations gfs2_databuf_lops = {
.lo_add = databuf_lo_add,
- .lo_incore_commit = buf_lo_incore_commit,
.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"
+ .lo_name = "databuf",
};
-struct gfs2_log_operations *gfs2_log_ops[] = {
- &gfs2_glock_lops,
+const struct gfs2_log_operations *gfs2_log_ops[] = {
+ &gfs2_databuf_lops,
&gfs2_buf_lops,
- &gfs2_revoke_lops,
&gfs2_rg_lops,
- &gfs2_databuf_lops,
- NULL
+ &gfs2_revoke_lops,
+ NULL,
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff