git: 1fd80186c91d - main - Revert commit 1935cc945642 ("vfs: vntblinit(): Rework comments on...")

The branch main has been updated by olce:

URL: https://cgit.FreeBSD.org/src/commit/?id=1fd80186c91d847532e8354b81d03f17c9fcf650

commit 1fd80186c91d847532e8354b81d03f17c9fcf650
Author:     Olivier Certner <olce@FreeBSD.org>
AuthorDate: 2025-05-15 14:26:02 +0000
Commit:     Olivier Certner <olce@FreeBSD.org>
CommitDate: 2025-05-15 14:27:23 +0000

    Revert commit 1935cc945642 ("vfs: vntblinit(): Rework comments on...")
    
    This is because the Differential Revision tag was wrong.  Will be recommitted shortly.
---
 sys/kern/vfs_subr.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index 769586ad0d6b..5fdd4b6c2474 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -757,15 +757,15 @@ vntblinit(void *dummy __unused)
 	int cpu, physvnodes, virtvnodes;
 
 	/*
-	 * 'desiredvnodes' is the minimum of a function of the physical memory
-	 * size and another of the kernel heap size (UMA limit, a portion of the
-	 * KVA).
-	 *
-	 * Currently, on 64-bit platforms, 'desiredvnodes' is set to
-	 * 'virtvnodes' up to a physical memory cutoff of ~1674MB, after which
-	 * 'physvnodes' applies instead.  With the current automatic tuning for
-	 * 'maxfiles' (32 files/MB), 'desiredvnodes' becomes smaller than it at
-	 * ~5136MB.
+	 * Desiredvnodes is a function of the physical memory size and the
+	 * kernel's heap size.  Generally speaking, it scales with the
+	 * physical memory size.  The ratio of desiredvnodes to the physical
+	 * memory size is 1:16 until desiredvnodes exceeds 98,304.
+	 * Thereafter, the
+	 * marginal ratio of desiredvnodes to the physical memory size is
+	 * 1:64.  However, desiredvnodes is limited by the kernel's heap
+	 * size.  The memory required by desiredvnodes vnodes and vm objects
+	 * must not exceed 1/10th of the kernel's heap size.
 	 */
 	physvnodes = maxproc + pgtok(vm_cnt.v_page_count) / 64 +
 	    3 * min(98304 * 16, pgtok(vm_cnt.v_page_count)) / 64;