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-rw-r--r--fs/ocfs2/alloc.c106
-rw-r--r--fs/ocfs2/alloc.h4
2 files changed, 103 insertions, 7 deletions
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 0cc2deb9394..4614614084d 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -5800,7 +5800,10 @@ int ocfs2_truncate_log_init(struct ocfs2_super *osb)
*/
/*
- * Describes a single block free from a suballocator
+ * Describe a single bit freed from a suballocator. For the block
+ * suballocators, it represents one block. For the global cluster
+ * allocator, it represents some clusters and free_bit indicates
+ * clusters number.
*/
struct ocfs2_cached_block_free {
struct ocfs2_cached_block_free *free_next;
@@ -5815,10 +5818,10 @@ struct ocfs2_per_slot_free_list {
struct ocfs2_cached_block_free *f_first;
};
-static int ocfs2_free_cached_items(struct ocfs2_super *osb,
- int sysfile_type,
- int slot,
- struct ocfs2_cached_block_free *head)
+static int ocfs2_free_cached_blocks(struct ocfs2_super *osb,
+ int sysfile_type,
+ int slot,
+ struct ocfs2_cached_block_free *head)
{
int ret;
u64 bg_blkno;
@@ -5893,6 +5896,82 @@ out:
return ret;
}
+int ocfs2_cache_cluster_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
+ u64 blkno, unsigned int bit)
+{
+ int ret = 0;
+ struct ocfs2_cached_block_free *item;
+
+ item = kmalloc(sizeof(*item), GFP_NOFS);
+ if (item == NULL) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ return ret;
+ }
+
+ mlog(0, "Insert clusters: (bit %u, blk %llu)\n",
+ bit, (unsigned long long)blkno);
+
+ item->free_blk = blkno;
+ item->free_bit = bit;
+ item->free_next = ctxt->c_global_allocator;
+
+ ctxt->c_global_allocator = item;
+ return ret;
+}
+
+static int ocfs2_free_cached_clusters(struct ocfs2_super *osb,
+ struct ocfs2_cached_block_free *head)
+{
+ struct ocfs2_cached_block_free *tmp;
+ struct inode *tl_inode = osb->osb_tl_inode;
+ handle_t *handle;
+ int ret = 0;
+
+ mutex_lock(&tl_inode->i_mutex);
+
+ while (head) {
+ if (ocfs2_truncate_log_needs_flush(osb)) {
+ ret = __ocfs2_flush_truncate_log(osb);
+ if (ret < 0) {
+ mlog_errno(ret);
+ break;
+ }
+ }
+
+ handle = ocfs2_start_trans(osb, OCFS2_TRUNCATE_LOG_UPDATE);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ mlog_errno(ret);
+ break;
+ }
+
+ ret = ocfs2_truncate_log_append(osb, handle, head->free_blk,
+ head->free_bit);
+
+ ocfs2_commit_trans(osb, handle);
+ tmp = head;
+ head = head->free_next;
+ kfree(tmp);
+
+ if (ret < 0) {
+ mlog_errno(ret);
+ break;
+ }
+ }
+
+ mutex_unlock(&tl_inode->i_mutex);
+
+ while (head) {
+ /* Premature exit may have left some dangling items. */
+ tmp = head;
+ head = head->free_next;
+ kfree(tmp);
+ }
+
+ return ret;
+}
+
int ocfs2_run_deallocs(struct ocfs2_super *osb,
struct ocfs2_cached_dealloc_ctxt *ctxt)
{
@@ -5908,8 +5987,10 @@ int ocfs2_run_deallocs(struct ocfs2_super *osb,
if (fl->f_first) {
mlog(0, "Free items: (type %u, slot %d)\n",
fl->f_inode_type, fl->f_slot);
- ret2 = ocfs2_free_cached_items(osb, fl->f_inode_type,
- fl->f_slot, fl->f_first);
+ ret2 = ocfs2_free_cached_blocks(osb,
+ fl->f_inode_type,
+ fl->f_slot,
+ fl->f_first);
if (ret2)
mlog_errno(ret2);
if (!ret)
@@ -5920,6 +6001,17 @@ int ocfs2_run_deallocs(struct ocfs2_super *osb,
kfree(fl);
}
+ if (ctxt->c_global_allocator) {
+ ret2 = ocfs2_free_cached_clusters(osb,
+ ctxt->c_global_allocator);
+ if (ret2)
+ mlog_errno(ret2);
+ if (!ret)
+ ret = ret2;
+
+ ctxt->c_global_allocator = NULL;
+ }
+
return ret;
}
diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h
index 70257c84cfb..c301cf225f0 100644
--- a/fs/ocfs2/alloc.h
+++ b/fs/ocfs2/alloc.h
@@ -167,11 +167,15 @@ int __ocfs2_flush_truncate_log(struct ocfs2_super *osb);
*/
struct ocfs2_cached_dealloc_ctxt {
struct ocfs2_per_slot_free_list *c_first_suballocator;
+ struct ocfs2_cached_block_free *c_global_allocator;
};
static inline void ocfs2_init_dealloc_ctxt(struct ocfs2_cached_dealloc_ctxt *c)
{
c->c_first_suballocator = NULL;
+ c->c_global_allocator = NULL;
}
+int ocfs2_cache_cluster_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
+ u64 blkno, unsigned int bit);
int ocfs2_run_deallocs(struct ocfs2_super *osb,
struct ocfs2_cached_dealloc_ctxt *ctxt);