aboutsummaryrefslogtreecommitdiff
path: root/fs/gfs2
diff options
context:
space:
mode:
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/incore.h2
-rw-r--r--fs/gfs2/log.c57
-rw-r--r--fs/gfs2/lops.c160
-rw-r--r--fs/gfs2/ops_address.c50
-rw-r--r--fs/gfs2/ops_fstype.c1
5 files changed, 143 insertions, 127 deletions
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 23b611aa70d..388dc1bd736 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -612,13 +612,13 @@ struct gfs2_sbd {
unsigned int sd_log_num_revoke;
unsigned int sd_log_num_rg;
unsigned int sd_log_num_databuf;
- unsigned int sd_log_num_jdata;
struct list_head sd_log_le_gl;
struct list_head sd_log_le_buf;
struct list_head sd_log_le_revoke;
struct list_head sd_log_le_rg;
struct list_head sd_log_le_databuf;
+ struct list_head sd_log_le_ordered;
unsigned int sd_log_blks_free;
struct mutex sd_log_reserve_mutex;
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index d8232ec2539..20fa528d457 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -620,6 +620,57 @@ static void log_flush_commit(struct gfs2_sbd *sdp)
}
}
+static void gfs2_ordered_write(struct gfs2_sbd *sdp)
+{
+ struct gfs2_bufdata *bd;
+ struct buffer_head *bh;
+ LIST_HEAD(written);
+
+ gfs2_log_lock(sdp);
+ while (!list_empty(&sdp->sd_log_le_ordered)) {
+ bd = list_entry(sdp->sd_log_le_ordered.next, struct gfs2_bufdata, bd_le.le_list);
+ list_move(&bd->bd_le.le_list, &written);
+ bh = bd->bd_bh;
+ if (!buffer_dirty(bh))
+ continue;
+ get_bh(bh);
+ gfs2_log_unlock(sdp);
+ lock_buffer(bh);
+ if (test_clear_buffer_dirty(bh)) {
+ bh->b_end_io = end_buffer_write_sync;
+ submit_bh(WRITE, bh);
+ } else {
+ unlock_buffer(bh);
+ brelse(bh);
+ }
+ gfs2_log_lock(sdp);
+ }
+ list_splice(&written, &sdp->sd_log_le_ordered);
+ gfs2_log_unlock(sdp);
+}
+
+static void gfs2_ordered_wait(struct gfs2_sbd *sdp)
+{
+ struct gfs2_bufdata *bd;
+ struct buffer_head *bh;
+
+ gfs2_log_lock(sdp);
+ while (!list_empty(&sdp->sd_log_le_ordered)) {
+ bd = list_entry(sdp->sd_log_le_ordered.prev, struct gfs2_bufdata, bd_le.le_list);
+ bh = bd->bd_bh;
+ if (buffer_locked(bh)) {
+ get_bh(bh);
+ gfs2_log_unlock(sdp);
+ wait_on_buffer(bh);
+ brelse(bh);
+ gfs2_log_lock(sdp);
+ continue;
+ }
+ list_del_init(&bd->bd_le.le_list);
+ }
+ gfs2_log_unlock(sdp);
+}
+
/**
* gfs2_log_flush - flush incore transaction(s)
* @sdp: the filesystem
@@ -648,7 +699,7 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
INIT_LIST_HEAD(&ai->ai_ail2_list);
gfs2_assert_withdraw(sdp,
- sdp->sd_log_num_buf + sdp->sd_log_num_jdata ==
+ sdp->sd_log_num_buf + sdp->sd_log_num_databuf ==
sdp->sd_log_commited_buf +
sdp->sd_log_commited_databuf);
gfs2_assert_withdraw(sdp,
@@ -658,7 +709,10 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
sdp->sd_log_flush_wrapped = 0;
ai->ai_first = sdp->sd_log_flush_head;
+ gfs2_ordered_write(sdp);
lops_before_commit(sdp);
+ gfs2_ordered_wait(sdp);
+
if (!list_empty(&sdp->sd_log_flush_list))
log_flush_commit(sdp);
else if (sdp->sd_log_tail != current_tail(sdp) && !sdp->sd_log_idle){
@@ -751,7 +805,6 @@ void gfs2_log_shutdown(struct gfs2_sbd *sdp)
gfs2_assert_withdraw(sdp, !sdp->sd_log_blks_reserved);
gfs2_assert_withdraw(sdp, !sdp->sd_log_num_gl);
gfs2_assert_withdraw(sdp, !sdp->sd_log_num_buf);
- gfs2_assert_withdraw(sdp, !sdp->sd_log_num_jdata);
gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke);
gfs2_assert_withdraw(sdp, !sdp->sd_log_num_rg);
gfs2_assert_withdraw(sdp, !sdp->sd_log_num_databuf);
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index 3ec587135d4..7e2d4e692b5 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -555,10 +555,11 @@ static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
if (gfs2_is_jdata(ip)) {
gfs2_pin(sdp, bd->bd_bh);
tr->tr_num_databuf_new++;
- sdp->sd_log_num_jdata++;
+ sdp->sd_log_num_databuf++;
+ list_add(&le->le_list, &sdp->sd_log_le_databuf);
+ } else {
+ list_add(&le->le_list, &sdp->sd_log_le_ordered);
}
- 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);
@@ -583,114 +584,59 @@ static int gfs2_check_magic(struct buffer_head *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 *bd1 = NULL, *bd2;
struct buffer_head *bh = NULL,*bh1 = NULL;
struct gfs2_log_descriptor *ld;
unsigned int limit;
- unsigned int total_dbuf;
- unsigned int total_jdata;
+ unsigned int total;
unsigned int num, n;
__be64 *ptr = NULL;
+ int magic;
+
limit = databuf_limit(sdp);
- /*
- * Start writing ordered buffers, write journaled buffers
- * into the log along with a header
- */
gfs2_log_lock(sdp);
- total_dbuf = sdp->sd_log_num_databuf;
- total_jdata = sdp->sd_log_num_jdata;
+ total = sdp->sd_log_num_databuf;
bd2 = bd1 = list_prepare_entry(bd1, &sdp->sd_log_le_databuf,
bd_le.le_list);
- while(total_dbuf) {
- num = total_jdata;
+ while(total) {
+ num = total;
if (num > limit)
num = limit;
+
+ gfs2_log_unlock(sdp);
+ bh = gfs2_log_get_buf(sdp);
+ gfs2_log_lock(sdp);
+
+ ld = (struct gfs2_log_descriptor *)bh->b_data;
+ ptr = (__be64 *)(bh->b_data + DATABUF_OFFSET);
+ 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(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));
+
n = 0;
- list_for_each_entry_safe_continue(bd1, bdt,
- &sdp->sd_log_le_databuf,
- bd_le.le_list) {
- /* store off the buffer head in a local ptr since
- * gfs2_bufdata might change when we drop the log lock
- */
+ list_for_each_entry_continue(bd1, &sdp->sd_log_le_databuf,
+ bd_le.le_list) {
bh1 = bd1->bd_bh;
- /* An ordered write buffer */
- if (bh1 && !buffer_pinned(bh1)) {
- 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 (bh1) {
- if (buffer_dirty(bh1)) {
- get_bh(bh1);
-
- gfs2_log_unlock(sdp);
-
- ll_rw_block(SWRITE, 1, &bh1);
- brelse(bh1);
-
- gfs2_log_lock(sdp);
- }
- continue;
- }
- continue;
- } else if (bh1) { /* A journaled buffer */
- int magic;
- gfs2_log_unlock(sdp);
- if (!bh) {
- bh = gfs2_log_get_buf(sdp);
- ld = (struct gfs2_log_descriptor *)
- bh->b_data;
- ptr = (__be64 *)(bh->b_data +
- DATABUF_OFFSET);
- 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(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(bh1);
- *ptr++ = cpu_to_be64(bh1->b_blocknr);
- *ptr++ = cpu_to_be64((__u64)magic);
- clear_buffer_escaped(bh1);
- if (unlikely(magic != 0))
- set_buffer_escaped(bh1);
- gfs2_log_lock(sdp);
- if (++n >= num)
- break;
- } else if (!bh1) {
- total_dbuf--;
- sdp->sd_log_num_databuf--;
- list_del_init(&bd1->bd_le.le_list);
- if (bd1 == bd2) {
- bd2 = NULL;
- bd2 = list_prepare_entry(bd2,
- &sdp->sd_log_le_databuf,
- bd_le.le_list);
- }
- kmem_cache_free(gfs2_bufdata_cachep, bd1);
- }
+ magic = gfs2_check_magic(bh1);
+ *ptr++ = cpu_to_be64(bh1->b_blocknr);
+ *ptr++ = cpu_to_be64((__u64)magic);
+ clear_buffer_escaped(bh1);
+ if (unlikely(magic != 0))
+ set_buffer_escaped(bh1);
+ if (++n >= num)
+ break;
}
gfs2_log_unlock(sdp);
if (bh) {
@@ -727,34 +673,10 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
break;
}
bh = NULL;
- BUG_ON(total_dbuf < num);
- total_dbuf -= num;
- total_jdata -= num;
+ BUG_ON(total < num);
+ total -= num;
}
gfs2_log_unlock(sdp);
-
- /* Wait on all ordered buffers */
- while (!list_empty(&started)) {
- gfs2_log_lock(sdp);
- bd1 = list_entry(started.next, struct gfs2_bufdata,
- bd_le.le_list);
- list_del_init(&bd1->bd_le.le_list);
- sdp->sd_log_num_databuf--;
- bh = bd1->bd_bh;
- if (bh) {
- bh->b_private = NULL;
- get_bh(bh);
- gfs2_log_unlock(sdp);
- wait_on_buffer(bh);
- brelse(bh);
- } else
- gfs2_log_unlock(sdp);
-
- kmem_cache_free(gfs2_bufdata_cachep, bd1);
- }
-
- /* 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);
}
static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
@@ -838,11 +760,9 @@ static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
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);
}
gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf);
- gfs2_assert_warn(sdp, !sdp->sd_log_num_jdata);
}
diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c
index 8407d1db4ea..dd1ea491ddc 100644
--- a/fs/gfs2/ops_address.c
+++ b/fs/gfs2/ops_address.c
@@ -616,13 +616,50 @@ static sector_t gfs2_bmap(struct address_space *mapping, sector_t lblock)
return dblock;
}
+static void gfs2_discard(struct gfs2_sbd *sdp, struct buffer_head *bh)
+{
+ struct gfs2_bufdata *bd;
+
+ lock_buffer(bh);
+ gfs2_log_lock(sdp);
+ clear_buffer_dirty(bh);
+ bd = bh->b_private;
+ if (bd) {
+ if (!list_empty(&bd->bd_le.le_list)) {
+ if (!buffer_pinned(bh))
+ list_del_init(&bd->bd_le.le_list);
+ }
+ }
+ bh->b_bdev = NULL;
+ clear_buffer_mapped(bh);
+ clear_buffer_req(bh);
+ clear_buffer_new(bh);
+ gfs2_log_unlock(sdp);
+ unlock_buffer(bh);
+}
+
static void gfs2_invalidatepage(struct page *page, unsigned long offset)
{
+ struct gfs2_sbd *sdp = GFS2_SB(page->mapping->host);
+ struct buffer_head *bh, *head;
+ unsigned long pos = 0;
+
BUG_ON(!PageLocked(page));
if (offset == 0)
ClearPageChecked(page);
+ if (!page_has_buffers(page))
+ goto out;
- block_invalidatepage(page, offset);
+ bh = head = page_buffers(page);
+ do {
+ if (offset <= pos)
+ gfs2_discard(sdp, bh);
+ pos += bh->b_size;
+ bh = bh->b_this_page;
+ } while (bh != head);
+out:
+ if (offset == 0)
+ try_to_release_page(page, 0);
}
/**
@@ -732,9 +769,14 @@ int gfs2_releasepage(struct page *page, gfp_t gfp_mask)
if (bd) {
gfs2_assert_warn(sdp, bd->bd_bh == bh);
gfs2_assert_warn(sdp, list_empty(&bd->bd_list_tr));
- bd->bd_bh = NULL;
- if (!list_empty(&bd->bd_le.le_list))
- bd = NULL;
+ if (!list_empty(&bd->bd_le.le_list)) {
+ if (!buffer_pinned(bh))
+ list_del_init(&bd->bd_le.le_list);
+ else
+ bd = NULL;
+ }
+ if (bd)
+ bd->bd_bh = NULL;
bh->b_private = NULL;
}
gfs2_log_unlock(sdp);
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 314c1134d12..35f3dfa9bfb 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -82,6 +82,7 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
INIT_LIST_HEAD(&sdp->sd_log_le_revoke);
INIT_LIST_HEAD(&sdp->sd_log_le_rg);
INIT_LIST_HEAD(&sdp->sd_log_le_databuf);
+ INIT_LIST_HEAD(&sdp->sd_log_le_ordered);
mutex_init(&sdp->sd_log_reserve_mutex);
INIT_LIST_HEAD(&sdp->sd_ail1_list);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-16 22:44:32 +0000