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[10/10] af_unix: use freezable blocking calls in read

Message ID 1367271946-7239-11-git-send-email-ccross@android.com (mailing list archive)
State RFC, archived
Headers show

Commit Message

Colin Cross April 29, 2013, 9:45 p.m. UTC 
Avoid waking up every thread sleeping in read call on an AF_UNIX
socket during suspend and resume by calling a freezable blocking
call.

Signed-off-by: Colin Cross <ccross@android.com>
---
 net/unix/af_unix.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 2db702d..2bcac57 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -114,6 +114,7 @@ 
 #include <linux/mount.h>
 #include <net/checksum.h>
 #include <linux/security.h>
+#include <linux/freezer.h>
 
 struct hlist_head unix_socket_table[2 * UNIX_HASH_SIZE];
 EXPORT_SYMBOL_GPL(unix_socket_table);
@@ -1880,7 +1881,7 @@  static long unix_stream_data_wait(struct sock *sk, long timeo)
 
 		set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
 		unix_state_unlock(sk);
-		timeo = schedule_timeout(timeo);
+		timeo = freezable_schedule_timeout(timeo);
 		unix_state_lock(sk);
 		clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
 	}