git: 33fdf1afaea9 - main - vfs cache: mark vfs.cache.param.size as read-only

[Mateusz Guzik]

The branch main has been updated by mjg:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=33fdf1afaea931eaa5dd14e6c097d7ffafe2fb1a

commit 33fdf1afaea931eaa5dd14e6c097d7ffafe2fb1a
Author:     Mateusz Guzik <m...@freebsd.org>
AuthorDate: 2023-09-22 21:32:23 +0000
Commit:     Mateusz Guzik <m...@freebsd.org>
CommitDate: 2023-09-22 21:32:23 +0000

    vfs cache: mark vfs.cache.param.size as read-only
    
    It was not meant to be writable and writes don't work correctly as they
    fail to resize the hash.
---
 sys/kern/vfs_cache.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/kern/vfs_cache.c b/sys/kern/vfs_cache.c
index fdfa4fde2c07..1edd8fad0e89 100644
--- a/sys/kern/vfs_cache.c
+++ b/sys/kern/vfs_cache.c
@@ -405,7 +405,7 @@ static SYSCTL_NODE(_vfs_cache, OID_AUTO, param, CTLFLAG_RW 
| CTLFLAG_MPSAFE, 0,
     "Name cache parameters");
 
 static u_int __read_mostly     ncsize; /* the size as computed on creation or 
resizing */
-SYSCTL_UINT(_vfs_cache_param, OID_AUTO, size, CTLFLAG_RW, &ncsize, 0,
+SYSCTL_UINT(_vfs_cache_param, OID_AUTO, size, CTLFLAG_RD, &ncsize, 0,
     "Total namecache capacity");
 
 u_int ncsizefactor = 2;