The patch titled
uml: aIO deadlock avoidance
has been removed from the -mm tree. Its filename was
uml-aio-deadlock-avoidance.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: uml: aIO deadlock avoidance
From: Jeff Dike <jdike@xxxxxxxxxxx>
Allow deadlocks to be avoided in the AIO code by setting the pipe to the I/O
thread non-blocking.
Signed-off-by: Jeff Dike <jdike@xxxxxxxxxxxxxxx>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/um/os-Linux/aio.c | 5 +++++
1 file changed, 5 insertions(+)
diff -puN arch/um/os-Linux/aio.c~uml-aio-deadlock-avoidance arch/um/os-Linux/aio.c
--- a/arch/um/os-Linux/aio.c~uml-aio-deadlock-avoidance
+++ a/arch/um/os-Linux/aio.c
@@ -221,6 +221,11 @@ static int init_aio_24(void)
aio_req_fd_w = fds[0];
aio_req_fd_r = fds[1];
+
+ err = os_set_fd_block(aio_req_fd_w, 0);
+ if(err)
+ goto out_close_pipe;
+
err = run_helper_thread(not_aio_thread, NULL,
CLONE_FILES | CLONE_VM | SIGCHLD, &stack, 0);
if(err < 0)
_
Patches currently in -mm which might be from jdike@xxxxxxxxxxx are
origin.patch
uml-hostfs-style-fixes.patch
uml-an-idle-system-should-have-zero-load-average.patch
remove-tas.patch
x86-create-asm-cmpxchgh.patch
uml-network-and-pcap-cleanup.patch
uml-pcap-devices-should-get-macs-from-command-line.patch
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