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| author | Chuck Lever <chuck.lever@oracle.com> | 2021-02-21 02:53:40 +0300 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2021-03-22 20:22:13 +0300 |
| commit | e844d307d46cfa7e09cdb671941bfd5f1be86773 (patch) | |
| tree | c5fad5b7c90452b8ca93f4ac1ec26337eca9df18 /net/sunrpc/svc_xprt.c | |
| parent | c558d47596867ff1082fd7475b63670f63f7f5cf (diff) | |
| download | linux-e844d307d46cfa7e09cdb671941bfd5f1be86773.tar.xz | |
svcrdma: Add a "deferred close" helper
Refactor a bit of commonly used logic so that every site that wants
a close deferred to an nfsd thread does all the right things
(set_bit(XPT_CLOSE) then enqueue).
Also, once XPT_CLOSE is set on a transport, it is never cleared. If
XPT_CLOSE is already set, then the close is already being handled
and the enqueue can be skipped.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'net/sunrpc/svc_xprt.c')
| -rw-r--r-- | net/sunrpc/svc_xprt.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c index 3cdd71a8df1e..b134fc5f3b8d 100644 --- a/net/sunrpc/svc_xprt.c +++ b/net/sunrpc/svc_xprt.c @@ -139,6 +139,20 @@ int svc_print_xprts(char *buf, int maxlen) return len; } +/** + * svc_xprt_deferred_close - Close a transport + * @xprt: transport instance + * + * Used in contexts that need to defer the work of shutting down + * the transport to an nfsd thread. + */ +void svc_xprt_deferred_close(struct svc_xprt *xprt) +{ + if (!test_and_set_bit(XPT_CLOSE, &xprt->xpt_flags)) + svc_xprt_enqueue(xprt); +} +EXPORT_SYMBOL_GPL(svc_xprt_deferred_close); + static void svc_xprt_free(struct kref *kref) { struct svc_xprt *xprt = |