diff options
| author | Ingo Molnar <mingo@kernel.org> | 2012-04-14 13:18:27 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-04-14 13:19:04 +0200 |
| commit | 6ac1ef482d7ae0c690f1640bf6eb818ff9a2d91e (patch) | |
| tree | 021cc9f6b477146fcebe6f3be4752abfa2ba18a9 /net/9p/client.c | |
| parent | 682968e0c425c60f0dde37977e5beb2b12ddc4cc (diff) | |
| parent | a385ec4f11bdcf81af094c03e2444ee9b7fad2e5 (diff) | |
Merge branch 'perf/core' into perf/uprobes
Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/9p/client.c')
| -rw-r--r-- | net/9p/client.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/net/9p/client.c b/net/9p/client.c index 776618cd2be..b23a17c431c 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -740,10 +740,18 @@ p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...) c->status = Disconnected; goto reterr; } +again: /* Wait for the response */ err = wait_event_interruptible(*req->wq, req->status >= REQ_STATUS_RCVD); + if ((err == -ERESTARTSYS) && (c->status == Connected) + && (type == P9_TFLUSH)) { + sigpending = 1; + clear_thread_flag(TIF_SIGPENDING); + goto again; + } + if (req->status == REQ_STATUS_ERROR) { p9_debug(P9_DEBUG_ERROR, "req_status error %d\n", req->t_err); err = req->t_err; @@ -1420,6 +1428,7 @@ int p9_client_clunk(struct p9_fid *fid) int err; struct p9_client *clnt; struct p9_req_t *req; + int retries = 0; if (!fid) { pr_warn("%s (%d): Trying to clunk with NULL fid\n", @@ -1428,7 +1437,9 @@ int p9_client_clunk(struct p9_fid *fid) return 0; } - p9_debug(P9_DEBUG_9P, ">>> TCLUNK fid %d\n", fid->fid); +again: + p9_debug(P9_DEBUG_9P, ">>> TCLUNK fid %d (try %d)\n", fid->fid, + retries); err = 0; clnt = fid->clnt; @@ -1444,8 +1455,14 @@ int p9_client_clunk(struct p9_fid *fid) error: /* * Fid is not valid even after a failed clunk + * If interrupted, retry once then give up and + * leak fid until umount. */ - p9_fid_destroy(fid); + if (err == -ERESTARTSYS) { + if (retries++ == 0) + goto again; + } else + p9_fid_destroy(fid); return err; } EXPORT_SYMBOL(p9_client_clunk); @@ -1470,7 +1487,10 @@ int p9_client_remove(struct p9_fid *fid) p9_free_req(clnt, req); error: - p9_fid_destroy(fid); + if (err == -ERESTARTSYS) + p9_client_clunk(fid); + else + p9_fid_destroy(fid); return err; } EXPORT_SYMBOL(p9_client_remove); |