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Diffstat (limited to 'fs/gfs2/log.c')
-rw-r--r--fs/gfs2/log.c104
1 files changed, 57 insertions, 47 deletions
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 9a2ca8be764..b404f485303 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -73,7 +73,7 @@ unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
void gfs2_remove_from_ail(struct gfs2_bufdata *bd)
{
- bd->bd_ail = NULL;
+ bd->bd_tr = NULL;
list_del_init(&bd->bd_ail_st_list);
list_del_init(&bd->bd_ail_gl_list);
atomic_dec(&bd->bd_gl->gl_ail_count);
@@ -90,7 +90,7 @@ void gfs2_remove_from_ail(struct gfs2_bufdata *bd)
static int gfs2_ail1_start_one(struct gfs2_sbd *sdp,
struct writeback_control *wbc,
- struct gfs2_ail *ai)
+ struct gfs2_trans *tr)
__releases(&sdp->sd_ail_lock)
__acquires(&sdp->sd_ail_lock)
{
@@ -99,15 +99,15 @@ __acquires(&sdp->sd_ail_lock)
struct gfs2_bufdata *bd, *s;
struct buffer_head *bh;
- list_for_each_entry_safe_reverse(bd, s, &ai->ai_ail1_list, bd_ail_st_list) {
+ list_for_each_entry_safe_reverse(bd, s, &tr->tr_ail1_list, bd_ail_st_list) {
bh = bd->bd_bh;
- gfs2_assert(sdp, bd->bd_ail == ai);
+ gfs2_assert(sdp, bd->bd_tr == tr);
if (!buffer_busy(bh)) {
if (!buffer_uptodate(bh))
gfs2_io_error_bh(sdp, bh);
- list_move(&bd->bd_ail_st_list, &ai->ai_ail2_list);
+ list_move(&bd->bd_ail_st_list, &tr->tr_ail2_list);
continue;
}
@@ -116,7 +116,7 @@ __acquires(&sdp->sd_ail_lock)
if (gl == bd->bd_gl)
continue;
gl = bd->bd_gl;
- list_move(&bd->bd_ail_st_list, &ai->ai_ail1_list);
+ list_move(&bd->bd_ail_st_list, &tr->tr_ail1_list);
mapping = bh->b_page->mapping;
if (!mapping)
continue;
@@ -144,15 +144,15 @@ __acquires(&sdp->sd_ail_lock)
void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc)
{
struct list_head *head = &sdp->sd_ail1_list;
- struct gfs2_ail *ai;
+ struct gfs2_trans *tr;
trace_gfs2_ail_flush(sdp, wbc, 1);
spin_lock(&sdp->sd_ail_lock);
restart:
- list_for_each_entry_reverse(ai, head, ai_list) {
+ list_for_each_entry_reverse(tr, head, tr_list) {
if (wbc->nr_to_write <= 0)
break;
- if (gfs2_ail1_start_one(sdp, wbc, ai))
+ if (gfs2_ail1_start_one(sdp, wbc, tr))
goto restart;
}
spin_unlock(&sdp->sd_ail_lock);
@@ -183,20 +183,20 @@ static void gfs2_ail1_start(struct gfs2_sbd *sdp)
*
*/
-static void gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
+static void gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
{
struct gfs2_bufdata *bd, *s;
struct buffer_head *bh;
- list_for_each_entry_safe_reverse(bd, s, &ai->ai_ail1_list,
+ list_for_each_entry_safe_reverse(bd, s, &tr->tr_ail1_list,
bd_ail_st_list) {
bh = bd->bd_bh;
- gfs2_assert(sdp, bd->bd_ail == ai);
+ gfs2_assert(sdp, bd->bd_tr == tr);
if (buffer_busy(bh))
continue;
if (!buffer_uptodate(bh))
gfs2_io_error_bh(sdp, bh);
- list_move(&bd->bd_ail_st_list, &ai->ai_ail2_list);
+ list_move(&bd->bd_ail_st_list, &tr->tr_ail2_list);
}
}
@@ -210,14 +210,14 @@ static void gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
static int gfs2_ail1_empty(struct gfs2_sbd *sdp)
{
- struct gfs2_ail *ai, *s;
+ struct gfs2_trans *tr, *s;
int ret;
spin_lock(&sdp->sd_ail_lock);
- list_for_each_entry_safe_reverse(ai, s, &sdp->sd_ail1_list, ai_list) {
- gfs2_ail1_empty_one(sdp, ai);
- if (list_empty(&ai->ai_ail1_list))
- list_move(&ai->ai_list, &sdp->sd_ail2_list);
+ list_for_each_entry_safe_reverse(tr, s, &sdp->sd_ail1_list, tr_list) {
+ gfs2_ail1_empty_one(sdp, tr);
+ if (list_empty(&tr->tr_ail1_list))
+ list_move(&tr->tr_list, &sdp->sd_ail2_list);
else
break;
}
@@ -229,13 +229,13 @@ static int gfs2_ail1_empty(struct gfs2_sbd *sdp)
static void gfs2_ail1_wait(struct gfs2_sbd *sdp)
{
- struct gfs2_ail *ai;
+ struct gfs2_trans *tr;
struct gfs2_bufdata *bd;
struct buffer_head *bh;
spin_lock(&sdp->sd_ail_lock);
- list_for_each_entry_reverse(ai, &sdp->sd_ail1_list, ai_list) {
- list_for_each_entry(bd, &ai->ai_ail1_list, bd_ail_st_list) {
+ list_for_each_entry_reverse(tr, &sdp->sd_ail1_list, tr_list) {
+ list_for_each_entry(bd, &tr->tr_ail1_list, bd_ail_st_list) {
bh = bd->bd_bh;
if (!buffer_locked(bh))
continue;
@@ -256,40 +256,40 @@ static void gfs2_ail1_wait(struct gfs2_sbd *sdp)
*
*/
-static void gfs2_ail2_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
+static void gfs2_ail2_empty_one(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
{
- struct list_head *head = &ai->ai_ail2_list;
+ struct list_head *head = &tr->tr_ail2_list;
struct gfs2_bufdata *bd;
while (!list_empty(head)) {
bd = list_entry(head->prev, struct gfs2_bufdata,
bd_ail_st_list);
- gfs2_assert(sdp, bd->bd_ail == ai);
+ gfs2_assert(sdp, bd->bd_tr == tr);
gfs2_remove_from_ail(bd);
}
}
static void ail2_empty(struct gfs2_sbd *sdp, unsigned int new_tail)
{
- struct gfs2_ail *ai, *safe;
+ struct gfs2_trans *tr, *safe;
unsigned int old_tail = sdp->sd_log_tail;
int wrap = (new_tail < old_tail);
int a, b, rm;
spin_lock(&sdp->sd_ail_lock);
- list_for_each_entry_safe(ai, safe, &sdp->sd_ail2_list, ai_list) {
- a = (old_tail <= ai->ai_first);
- b = (ai->ai_first < new_tail);
+ list_for_each_entry_safe(tr, safe, &sdp->sd_ail2_list, tr_list) {
+ a = (old_tail <= tr->tr_first);
+ b = (tr->tr_first < new_tail);
rm = (wrap) ? (a || b) : (a && b);
if (!rm)
continue;
- gfs2_ail2_empty_one(sdp, ai);
- list_del(&ai->ai_list);
- gfs2_assert_warn(sdp, list_empty(&ai->ai_ail1_list));
- gfs2_assert_warn(sdp, list_empty(&ai->ai_ail2_list));
- kfree(ai);
+ gfs2_ail2_empty_one(sdp, tr);
+ list_del(&tr->tr_list);
+ gfs2_assert_warn(sdp, list_empty(&tr->tr_ail1_list));
+ gfs2_assert_warn(sdp, list_empty(&tr->tr_ail2_list));
+ kfree(tr);
}
spin_unlock(&sdp->sd_ail_lock);
@@ -435,7 +435,7 @@ static unsigned int calc_reserved(struct gfs2_sbd *sdp)
static unsigned int current_tail(struct gfs2_sbd *sdp)
{
- struct gfs2_ail *ai;
+ struct gfs2_trans *tr;
unsigned int tail;
spin_lock(&sdp->sd_ail_lock);
@@ -443,8 +443,9 @@ static unsigned int current_tail(struct gfs2_sbd *sdp)
if (list_empty(&sdp->sd_ail1_list)) {
tail = sdp->sd_log_head;
} else {
- ai = list_entry(sdp->sd_ail1_list.prev, struct gfs2_ail, ai_list);
- tail = ai->ai_first;
+ tr = list_entry(sdp->sd_ail1_list.prev, struct gfs2_trans,
+ tr_list);
+ tail = tr->tr_first;
}
spin_unlock(&sdp->sd_ail_lock);
@@ -600,7 +601,7 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags)
void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
{
- struct gfs2_ail *ai;
+ struct gfs2_trans *tr;
down_write(&sdp->sd_log_flush_lock);
@@ -611,9 +612,12 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
}
trace_gfs2_log_flush(sdp, 1);
- ai = kzalloc(sizeof(struct gfs2_ail), GFP_NOFS | __GFP_NOFAIL);
- INIT_LIST_HEAD(&ai->ai_ail1_list);
- INIT_LIST_HEAD(&ai->ai_ail2_list);
+ tr = sdp->sd_log_tr;
+ if (tr) {
+ sdp->sd_log_tr = NULL;
+ INIT_LIST_HEAD(&tr->tr_ail1_list);
+ INIT_LIST_HEAD(&tr->tr_ail2_list);
+ }
if (sdp->sd_log_num_buf != sdp->sd_log_commited_buf) {
printk(KERN_INFO "GFS2: log buf %u %u\n", sdp->sd_log_num_buf,
@@ -630,7 +634,8 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
sdp->sd_log_flush_head = sdp->sd_log_head;
sdp->sd_log_flush_wrapped = 0;
- ai->ai_first = sdp->sd_log_flush_head;
+ if (tr)
+ tr->tr_first = sdp->sd_log_flush_head;
gfs2_ordered_write(sdp);
lops_before_commit(sdp);
@@ -643,7 +648,7 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
trace_gfs2_log_blocks(sdp, -1);
log_write_header(sdp, 0);
}
- lops_after_commit(sdp, ai);
+ lops_after_commit(sdp, tr);
gfs2_log_lock(sdp);
sdp->sd_log_head = sdp->sd_log_flush_head;
@@ -653,16 +658,16 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
sdp->sd_log_commited_revoke = 0;
spin_lock(&sdp->sd_ail_lock);
- if (!list_empty(&ai->ai_ail1_list)) {
- list_add(&ai->ai_list, &sdp->sd_ail1_list);
- ai = NULL;
+ if (tr && !list_empty(&tr->tr_ail1_list)) {
+ list_add(&tr->tr_list, &sdp->sd_ail1_list);
+ tr = NULL;
}
spin_unlock(&sdp->sd_ail_lock);
gfs2_log_unlock(sdp);
trace_gfs2_log_flush(sdp, 0);
up_write(&sdp->sd_log_flush_lock);
- kfree(ai);
+ kfree(tr);
}
static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
@@ -687,6 +692,12 @@ static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
sdp->sd_jdesc->jd_blocks);
sdp->sd_log_blks_reserved = reserved;
+ if (sdp->sd_log_tr == NULL &&
+ (tr->tr_num_buf_new || tr->tr_num_databuf_new)) {
+ gfs2_assert_withdraw(sdp, tr->tr_t_gh.gh_gl);
+ sdp->sd_log_tr = tr;
+ tr->tr_attached = 1;
+ }
gfs2_log_unlock(sdp);
}
@@ -708,7 +719,6 @@ static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
{
log_refund(sdp, tr);
- up_read(&sdp->sd_log_flush_lock);
if (atomic_read(&sdp->sd_log_pinned) > atomic_read(&sdp->sd_log_thresh1) ||
((sdp->sd_jdesc->jd_blocks - atomic_read(&sdp->sd_log_blks_free)) >
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-24 12:55:24 +0000