From: Trond Myklebust <trondmy@gmail.com>
To: SteveD@redhat.com
Cc: linux-nfs@vger.kernel.org
Subject: [RFC PATCH v2 1/7] mountd: Ensure we don't share cache file descriptors among processes.
Date: Tue, 21 May 2019 08:46:55 -0400 [thread overview]
Message-ID: <20190521124701.61849-2-trond.myklebust@hammerspace.com> (raw)
In-Reply-To: <20190521124701.61849-1-trond.myklebust@hammerspace.com>
Sharing cache descriptors without using locking can be very bad.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
utils/mountd/mountd.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/utils/mountd/mountd.c b/utils/mountd/mountd.c
index fb7bba4cd390..88a207b3a85a 100644
--- a/utils/mountd/mountd.c
+++ b/utils/mountd/mountd.c
@@ -836,8 +836,6 @@ main(int argc, char **argv)
if (!foreground)
closeall(3);
- cache_open();
-
unregister_services();
if (version2()) {
listeners += nfs_svc_create("mountd", MOUNTPROG,
@@ -888,6 +886,9 @@ main(int argc, char **argv)
if (num_threads > 1)
fork_workers();
+ /* Open files now to avoid sharing descriptors among forked processes */
+ cache_open();
+
xlog(L_NOTICE, "Version " VERSION " starting");
my_svc_run();
--
2.21.0
next prev parent reply other threads:[~2019-05-21 12:49 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-21 12:46 [RFC PATCH v2 0/7] Add a root_dir option to nfs.conf Trond Myklebust
2019-05-21 12:46 ` Trond Myklebust [this message]
2019-05-21 12:46 ` [RFC PATCH v2 2/7] Add a simple workqueue mechanism Trond Myklebust
2019-05-21 12:46 ` [RFC PATCH v2 3/7] Add utilities for resolving nfsd paths and stat()ing them Trond Myklebust
2019-05-21 12:46 ` [RFC PATCH v2 4/7] Add a helper to return the real path given an export entry Trond Myklebust
2019-05-21 12:46 ` [RFC PATCH v2 5/7] Add helpers to read/write to a file through the chrooted thread Trond Myklebust
2019-05-21 12:47 ` [RFC PATCH v2 6/7] Add support for the nfsd rootdir configuration option to rpc.mountd Trond Myklebust
2019-05-21 12:47 ` [RFC PATCH v2 7/7] Add support for the nfsd root directory to exportfs Trond Myklebust
2019-05-21 17:40 ` [RFC PATCH v2 0/7] Add a root_dir option to nfs.conf Chuck Lever
2019-05-21 18:17 ` Trond Myklebust
2019-05-21 18:59 ` Trond Myklebust
2019-05-21 19:06 ` Chuck Lever
2019-05-21 19:58 ` Trond Myklebust
2019-05-28 15:25 ` Steve Dickson
2019-05-28 16:44 ` Trond Myklebust
2019-05-28 16:47 ` Chuck Lever
2019-05-28 16:50 ` Trond Myklebust
2019-05-28 17:40 ` Steve Dickson
2019-05-28 18:19 ` Trond Myklebust
2019-05-28 19:33 ` Steve Dickson
2019-05-28 15:30 ` Chuck Lever
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