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authorDennis Zhou <dennis@kernel.org>2019-02-04 23:20:03 +0300
committerDavid Sterba <dsterba@suse.com>2019-02-25 16:13:32 +0300
commit92ee55303616a18135be91deff51799a5de81f9a (patch)
tree0a0ae5969e1992e5693fa6d90d30ae9c54b94b6d /fs/btrfs/zstd.c
parent929f4baf93173372a81ea27371c419c99bbc08d7 (diff)
downloadlinux-92ee55303616a18135be91deff51799a5de81f9a.tar.xz
btrfs: move to function pointers for get/put workspaces
The previous patch added generic helpers for get_workspace() and put_workspace(). Now, we can migrate ownership of the workspace_manager to be in the compression type code as the compression code itself doesn't care beyond being able to get a workspace. The init/cleanup and get/put methods are abstracted so each compression algorithm can decide how they want to manage their workspaces. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Dennis Zhou <dennis@kernel.org> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/zstd.c')
-rw-r--r--fs/btrfs/zstd.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/fs/btrfs/zstd.c b/fs/btrfs/zstd.c
index af6ec59972f5..b06eaf171be7 100644
--- a/fs/btrfs/zstd.c
+++ b/fs/btrfs/zstd.c
@@ -41,6 +41,28 @@ struct workspace {
ZSTD_outBuffer out_buf;
};
+static struct workspace_manager wsm;
+
+static void zstd_init_workspace_manager(void)
+{
+ btrfs_init_workspace_manager(&wsm, &btrfs_zstd_compress);
+}
+
+static void zstd_cleanup_workspace_manager(void)
+{
+ btrfs_cleanup_workspace_manager(&wsm);
+}
+
+static struct list_head *zstd_get_workspace(void)
+{
+ return btrfs_get_workspace(&wsm);
+}
+
+static void zstd_put_workspace(struct list_head *ws)
+{
+ btrfs_put_workspace(&wsm, ws);
+}
+
static void zstd_free_workspace(struct list_head *ws)
{
struct workspace *workspace = list_entry(ws, struct workspace, list);
@@ -424,6 +446,10 @@ static void zstd_set_level(struct list_head *ws, unsigned int type)
}
const struct btrfs_compress_op btrfs_zstd_compress = {
+ .init_workspace_manager = zstd_init_workspace_manager,
+ .cleanup_workspace_manager = zstd_cleanup_workspace_manager,
+ .get_workspace = zstd_get_workspace,
+ .put_workspace = zstd_put_workspace,
.alloc_workspace = zstd_alloc_workspace,
.free_workspace = zstd_free_workspace,
.compress_pages = zstd_compress_pages,