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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-28 09:58:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-28 09:58:38 -0700
commite9c0f1529c9022afbab16a442382aa9a84a79c41 (patch)
tree173e99d46283f5d814bf4407728ad0d2ea702100 /net
parentb18dafc86bb879d2f38a1743985d7ceb283c2f4d (diff)
parent5bdad93387c64f0095df7ae9a252ff44234a8b3f (diff)
Merge tag 'for-linus-3.4-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs
Pull 9p changes for the 3.4 merge window from Eric Van Hensbergen. * tag 'for-linus-3.4-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: 9p: statfs should not override server f_type net/9p: handle flushed Tclunk/Tremove net/9p: don't allow Tflush to be interrupted
Diffstat (limited to 'net')
-rw-r--r--net/9p/client.c26
1 files changed, 23 insertions, 3 deletions
diff --git a/net/9p/client.c b/net/9p/client.c
index 776618cd2be5..b23a17c431c8 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);