linux-kernel - [RFC PATCH v1 2/2] Documentation: btrfs: Document the influence of wq_cpu_set to thread

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Message-Id: <20230226162639.20559-3-ammarfaizi2@gnuweeb.org>
Date:   Sun, 26 Feb 2023 23:26:39 +0700
From:   Ammar Faizi <ammarfaizi2@...weeb.org>
To:     Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>,
        David Sterba <dsterba@...e.com>
Cc:     Ammar Faizi <ammarfaizi2@...weeb.org>,
        Filipe Manana <fdmanana@...e.com>,
        Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Linux Btrfs Mailing List <linux-btrfs@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Fsdevel Mailing List <linux-fsdevel@...r.kernel.org>,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>
Subject: [RFC PATCH v1 2/2] Documentation: btrfs: Document the influence of wq_cpu_set to thread_pool option

If wq_cpu_set option is set, the default thread_pool value will be
adjusted accordingly.

Signed-off-by: Ammar Faizi <ammarfaizi2@...weeb.org>
---
 Documentation/ch-mount-options.rst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/ch-mount-options.rst b/Documentation/ch-mount-options.rst
index 48fe63ee5e95c297..c38caf5e5fd0b719 100644
--- a/Documentation/ch-mount-options.rst
+++ b/Documentation/ch-mount-options.rst
@@ -411,6 +411,9 @@ thread_pool=<number>
         due to increased locking contention, process scheduling, cache-line bouncing or
         costly data transfers between local CPU memories.
 
+        Since 6.5, if *wq_cpu_set* is set, the default value will be the number of
+        online CPUs in the CPU wq_cpu_set plus 2.
+
 treelog, notreelog
         (default: on)
 
-- 
Ammar Faizi