int level;
};
+static struct workspace_manager wsm;
+
+static void zlib_init_workspace_manager(void)
+{
+ btrfs_init_workspace_manager(&wsm, &btrfs_zlib_compress);
+}
+
+static void zlib_cleanup_workspace_manager(void)
+{
+ btrfs_cleanup_workspace_manager(&wsm);
+}
+
+static struct list_head *zlib_get_workspace(unsigned int level)
+{
+ return btrfs_get_workspace(&wsm, level);
+}
+
+static void zlib_put_workspace(struct list_head *ws)
+{
+ btrfs_put_workspace(&wsm, ws);
+}
+
static void zlib_free_workspace(struct list_head *ws)
{
struct workspace *workspace = list_entry(ws, struct workspace, list);
kfree(workspace);
}
-static struct list_head *zlib_alloc_workspace(void)
+static struct list_head *zlib_alloc_workspace(unsigned int level)
{
struct workspace *workspace;
int workspacesize;
workspacesize = max(zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL),
zlib_inflate_workspacesize());
workspace->strm.workspace = kvmalloc(workspacesize, GFP_KERNEL);
+ workspace->level = level;
workspace->buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
if (!workspace->strm.workspace || !workspace->buf)
goto fail;
static void zlib_set_level(struct list_head *ws, unsigned int type)
{
struct workspace *workspace = list_entry(ws, struct workspace, list);
- unsigned level = (type & 0xF0) >> 4;
+ unsigned int level = btrfs_compress_level(type);
if (level > 9)
level = 9;
}
const struct btrfs_compress_op btrfs_zlib_compress = {
+ .init_workspace_manager = zlib_init_workspace_manager,
+ .cleanup_workspace_manager = zlib_cleanup_workspace_manager,
+ .get_workspace = zlib_get_workspace,
+ .put_workspace = zlib_put_workspace,
.alloc_workspace = zlib_alloc_workspace,
.free_workspace = zlib_free_workspace,
.compress_pages = zlib_compress_pages,