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-rw-r--r--fs/logfs/segment.c51
1 files changed, 39 insertions, 12 deletions
diff --git a/fs/logfs/segment.c b/fs/logfs/segment.c
index 9d5187353255..ab798ed1cc88 100644
--- a/fs/logfs/segment.c
+++ b/fs/logfs/segment.c
@@ -86,7 +86,11 @@ int __logfs_buf_write(struct logfs_area *area, u64 ofs, void *buf, size_t len,
BUG_ON(!page); /* FIXME: reserve a pool */
SetPageUptodate(page);
memcpy(page_address(page) + offset, buf, copylen);
- SetPagePrivate(page);
+
+ if (!PagePrivate(page)) {
+ SetPagePrivate(page);
+ page_cache_get(page);
+ }
page_cache_release(page);
buf += copylen;
@@ -110,7 +114,10 @@ static void pad_partial_page(struct logfs_area *area)
page = get_mapping_page(sb, index, 0);
BUG_ON(!page); /* FIXME: reserve a pool */
memset(page_address(page) + offset, 0xff, len);
- SetPagePrivate(page);
+ if (!PagePrivate(page)) {
+ SetPagePrivate(page);
+ page_cache_get(page);
+ }
page_cache_release(page);
}
}
@@ -130,7 +137,10 @@ static void pad_full_pages(struct logfs_area *area)
BUG_ON(!page); /* FIXME: reserve a pool */
SetPageUptodate(page);
memset(page_address(page), 0xff, PAGE_CACHE_SIZE);
- SetPagePrivate(page);
+ if (!PagePrivate(page)) {
+ SetPagePrivate(page);
+ page_cache_get(page);
+ }
page_cache_release(page);
index++;
no_indizes--;
@@ -485,8 +495,12 @@ static void move_btree_to_page(struct inode *inode, struct page *page,
mempool_free(item, super->s_alias_pool);
}
block->page = page;
- SetPagePrivate(page);
- page->private = (unsigned long)block;
+
+ if (!PagePrivate(page)) {
+ SetPagePrivate(page);
+ page_cache_get(page);
+ set_page_private(page, (unsigned long) block);
+ }
block->ops = &indirect_block_ops;
initialize_block_counters(page, block, data, 0);
}
@@ -536,8 +550,12 @@ void move_page_to_btree(struct page *page)
list_add(&item->list, &block->item_list);
}
block->page = NULL;
- ClearPagePrivate(page);
- page->private = 0;
+
+ if (PagePrivate(page)) {
+ ClearPagePrivate(page);
+ page_cache_release(page);
+ set_page_private(page, 0);
+ }
block->ops = &btree_block_ops;
err = alias_tree_insert(block->sb, block->ino, block->bix, block->level,
block);
@@ -702,7 +720,10 @@ void freeseg(struct super_block *sb, u32 segno)
page = find_get_page(mapping, ofs >> PAGE_SHIFT);
if (!page)
continue;
- ClearPagePrivate(page);
+ if (PagePrivate(page)) {
+ ClearPagePrivate(page);
+ page_cache_release(page);
+ }
page_cache_release(page);
}
}
@@ -841,6 +862,16 @@ static void free_area(struct logfs_area *area)
kfree(area);
}
+void free_areas(struct super_block *sb)
+{
+ struct logfs_super *super = logfs_super(sb);
+ int i;
+
+ for_each_area(i)
+ free_area(super->s_area[i]);
+ free_area(super->s_journal_area);
+}
+
static struct logfs_area *alloc_area(struct super_block *sb)
{
struct logfs_area *area;
@@ -923,10 +954,6 @@ err:
void logfs_cleanup_areas(struct super_block *sb)
{
struct logfs_super *super = logfs_super(sb);
- int i;
btree_grim_visitor128(&super->s_object_alias_tree, 0, kill_alias);
- for_each_area(i)
- free_area(super->s_area[i]);
- free_area(super->s_journal_area);
}