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From: Dennis Zhou <dennis@kernel.org>
To: David Sterba <dsterba@suse.com>,
	Josef Bacik <josef@toxicpanda.com>, Chris Mason <clm@fb.com>,
	Omar Sandoval <osandov@osandov.com>,
	Nick Terrell <terrelln@fb.com>,
	Nikolay Borisov <nborisov@suse.com>
Cc: kernel-team@fb.com, linux-btrfs@vger.kernel.org,
	linux-kernel@vger.kernel.org, Dennis Zhou <dennis@kernel.org>
Subject: [PATCH 04/12] btrfs: unify compression ops with workspace_manager
Date: Mon,  4 Feb 2019 15:20:00 -0500
Message-ID: <20190204202008.51652-5-dennis@kernel.org> (raw)
In-Reply-To: <20190204202008.51652-1-dennis@kernel.org>

Make the workspace_manager own the interface operations rather than
managing index-paired arrays for the workspace_manager and compression
operations.

Signed-off-by: Dennis Zhou <dennis@kernel.org>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
---
 fs/btrfs/compression.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 5b508cb3b236..ef560b47b9c5 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -775,6 +775,7 @@ const struct btrfs_compress_op btrfs_heuristic_compress = {
 };
 
 struct workspace_manager {
+	const struct btrfs_compress_op *ops;
 	struct list_head idle_ws;
 	spinlock_t ws_lock;
 	/* Number of free workspaces */
@@ -800,6 +801,8 @@ void __init btrfs_init_compress(void)
 	int i;
 
 	for (i = 0; i < BTRFS_NR_WORKSPACE_MANAGERS; i++) {
+		wsm[i].ops = btrfs_compress_op[i];
+
 		INIT_LIST_HEAD(&wsm[i].idle_ws);
 		spin_lock_init(&wsm[i].ws_lock);
 		atomic_set(&wsm[i].total_ws, 0);
@@ -809,7 +812,7 @@ void __init btrfs_init_compress(void)
 		 * Preallocate one workspace for each compression type so
 		 * we can guarantee forward progress in the worst case
 		 */
-		workspace = btrfs_compress_op[i]->alloc_workspace();
+		workspace = wsm[i].ops->alloc_workspace();
 		if (IS_ERR(workspace)) {
 			pr_warn("BTRFS: cannot preallocate compression workspace, will try later\n");
 		} else {
@@ -872,7 +875,7 @@ static struct list_head *find_workspace(int type)
 	 * context of btrfs_compress_bio/btrfs_compress_pages
 	 */
 	nofs_flag = memalloc_nofs_save();
-	workspace = btrfs_compress_op[type]->alloc_workspace();
+	workspace = wsm[type].ops->alloc_workspace();
 	memalloc_nofs_restore(nofs_flag);
 
 	if (IS_ERR(workspace)) {
@@ -930,7 +933,7 @@ static void free_workspace(int type, struct list_head *workspace)
 	}
 	spin_unlock(ws_lock);
 
-	btrfs_compress_op[type]->free_workspace(workspace);
+	wsm[type].ops->free_workspace(workspace);
 	atomic_dec(total_ws);
 wake:
 	cond_wake_up(ws_wait);
@@ -948,7 +951,7 @@ static void free_workspaces(void)
 		while (!list_empty(&wsm[i].idle_ws)) {
 			workspace = wsm[i].idle_ws.next;
 			list_del(workspace);
-			btrfs_compress_op[i]->free_workspace(workspace);
+			wsm[i].ops->free_workspace(workspace);
 			atomic_dec(&wsm[i].total_ws);
 		}
 	}
-- 
2.17.1


  parent reply index

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-04 20:19 [PATCH v2 00/12] btrfs: add zstd compression level support Dennis Zhou
2019-02-04 20:19 ` [PATCH 01/12] btrfs: add helpers for compression type and level Dennis Zhou
2019-02-04 20:19 ` [PATCH 02/12] btrfs: rename workspaces_list to workspace_manager Dennis Zhou
2019-02-04 20:19 ` [PATCH 03/12] btrfs: manage heuristic workspace as index 0 Dennis Zhou
2019-02-04 20:20 ` Dennis Zhou [this message]
2019-02-04 20:20 ` [PATCH 05/12] btrfs: add helper methods for workspace manager init and cleanup Dennis Zhou
2019-02-04 20:20 ` [PATCH 06/12] btrfs: add compression interface in (get/put)_workspace() Dennis Zhou
2019-02-04 20:20 ` [PATCH 07/12] btrfs: move to fn pointers for get/put workspaces Dennis Zhou
2019-02-04 20:20 ` [PATCH 08/12] btrfs: plumb level through the compression interface Dennis Zhou
2019-02-04 20:20 ` [PATCH 09/12] btrfs: change set_level() to bound the level passed in Dennis Zhou
2019-02-05 19:06   ` David Sterba
2019-02-05 19:32     ` Dennis Zhou
2019-02-05 19:54       ` David Sterba
2019-02-05 19:59         ` Dennis Zhou
2019-02-06 16:48   ` [PATCH v2 " Dennis Zhou
2019-02-04 20:20 ` [PATCH 10/12] btrfs: zstd use the passed through level instead of default Dennis Zhou
2019-02-04 20:20 ` [PATCH 11/12] btrfs: make zstd memory requirements monotonic Dennis Zhou
2019-02-04 20:20 ` [PATCH 12/12] btrfs: add zstd compression level support Dennis Zhou
2019-02-05 19:26   ` [PATCH v2 " Dennis Zhou
2019-02-06 16:47   ` [PATCH v3 " Dennis Zhou
2019-02-05 14:57 ` [PATCH v2 00/12] " David Sterba
2019-02-05 16:03   ` Dennis Zhou
2019-02-05 16:27     ` David Sterba
2019-02-05 16:30       ` Dennis Zhou
2019-02-05 16:51         ` David Sterba
2019-02-05 17:07           ` David Sterba
2019-02-05 18:27             ` David Sterba
2019-02-05 18:30               ` Dennis Zhou
2019-02-05 20:48                 ` Dennis Zhou
2019-02-06 15:15                   ` David Sterba
2019-02-06 16:51                     ` Dennis Zhou
2019-02-07 16:59 ` David Sterba
2019-02-07 17:36   ` Dennis Zhou
2019-02-08 13:22     ` David Sterba

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