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| author | Jeff Dike <jdike@addtoit.com> | 2007-05-06 14:51:44 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-07 12:13:03 -0700 |
| commit | 8603ec81487a5fefbc29611ff0d635b33b6da990 (patch) | |
| tree | 2cb7a391880aef15f33a0cea71bfd09ac5264c8f | |
| parent | a6ea4cceed18edebe1eb6001cb9e0f88cd741a6c (diff) | |
| download | kernel_samsung_smdk4412-8603ec81487a5fefbc29611ff0d635b33b6da990.tar.gz kernel_samsung_smdk4412-8603ec81487a5fefbc29611ff0d635b33b6da990.tar.bz2 kernel_samsung_smdk4412-8603ec81487a5fefbc29611ff0d635b33b6da990.zip | |
uml: aIO deadlock avoidance
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@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | arch/um/os-Linux/aio.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/um/os-Linux/aio.c b/arch/um/os-Linux/aio.c index 5d258eb4f50..9bf944f6a1d 100644 --- a/arch/um/os-Linux/aio.c +++ b/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) |