diff mbox series

[v9,1/7] NFSD: move nfsd_mutex handling into nfsd_svc callers

Message ID d0a814458af3d4f628db8ab305abc8ee2475ba38.1713878413.git.lorenzo@kernel.org (mailing list archive)
State Not Applicable
Headers show
Series convert write_threads, write_version and write_ports to netlink commands | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; GEN HAS DIFF 2 files changed, 701 insertions(+);
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 926 this patch: 926
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 3 maintainers not CCed: Dai.Ngo@oracle.com kolga@netapp.com tom@talpey.com
netdev/build_clang success Errors and warnings before: 937 this patch: 937
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 937 this patch: 937
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 25 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 7 this patch: 7
netdev/source_inline success Was 0 now: 0

Commit Message

Lorenzo Bianconi April 23, 2024, 1:25 p.m. UTC 
From: Jeff Layton <jlayton@kernel.org>

Currently nfsd_svc holds the nfsd_mutex over the whole function. For
some of the later netlink patches though, we want to do some other
things to the server before starting it. Move the mutex handling into
the callers.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 fs/nfsd/nfsctl.c | 2 ++
 fs/nfsd/nfssvc.c | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 340c5d61f199..2fe78b802f98 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -404,7 +404,9 @@  static ssize_t write_threads(struct file *file, char *buf, size_t size)
 		if (newthreads < 0)
 			return -EINVAL;
 		trace_nfsd_ctl_threads(net, newthreads);
+		mutex_lock(&nfsd_mutex);
 		rv = nfsd_svc(newthreads, net, file->f_cred);
+		mutex_unlock(&nfsd_mutex);
 		if (rv < 0)
 			return rv;
 	} else
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index c0d17b92b249..ca193f7ff0e1 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -775,7 +775,8 @@  nfsd_svc(int nrservs, struct net *net, const struct cred *cred)
 	struct nfsd_net *nn = net_generic(net, nfsd_net_id);
 	struct svc_serv *serv;
 
-	mutex_lock(&nfsd_mutex);
+	lockdep_assert_held(&nfsd_mutex);
+
 	dprintk("nfsd: creating service\n");
 
 	nrservs = max(nrservs, 0);
@@ -804,7 +805,6 @@  nfsd_svc(int nrservs, struct net *net, const struct cred *cred)
 	if (serv->sv_nrthreads == 0)
 		nfsd_destroy_serv(net);
 out:
-	mutex_unlock(&nfsd_mutex);
 	return error;
 }