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| author | Jeff Dike <jdike@addtoit.com> | 2007-07-15 23:38:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-16 09:05:38 -0700 |
| commit | c43990162fc7f9d2f15a12797fdc6f9c0905f704 (patch) | |
| tree | 64f8b776c4807da48971f3c24ca157c5e6ab921f /arch/um/os-Linux/aio.c | |
| parent | 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 (diff) | |
| download | linux-c43990162fc7f9d2f15a12797fdc6f9c0905f704.tar.gz linux-c43990162fc7f9d2f15a12797fdc6f9c0905f704.tar.xz | |
uml: simplify helper stack handling
run_helper and run_helper_thread had arguments which were the same in all
callers. run_helper's stack_out was always NULL and run_helper_thread's
stack_order was always 0. These are now gone, and the constants folded
into the code.
Also fixed leaks of the helper stack in the AIO and SIGIO code.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/os-Linux/aio.c')
| -rw-r--r-- | arch/um/os-Linux/aio.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/um/os-Linux/aio.c b/arch/um/os-Linux/aio.c index 9bf944f6a1db..b126df4ea168 100644 --- a/arch/um/os-Linux/aio.c +++ b/arch/um/os-Linux/aio.c @@ -177,6 +177,7 @@ static int do_not_aio(struct aio_thread_req *req) static int aio_req_fd_r = -1; static int aio_req_fd_w = -1; static int aio_pid = -1; +static unsigned long aio_stack; static int not_aio_thread(void *arg) { @@ -212,7 +213,6 @@ static int not_aio_thread(void *arg) static int init_aio_24(void) { - unsigned long stack; int fds[2], err; err = os_pipe(fds, 1, 1); @@ -227,7 +227,7 @@ static int init_aio_24(void) goto out_close_pipe; err = run_helper_thread(not_aio_thread, NULL, - CLONE_FILES | CLONE_VM | SIGCHLD, &stack, 0); + CLONE_FILES | CLONE_VM | SIGCHLD, &aio_stack); if(err < 0) goto out_close_pipe; @@ -252,7 +252,6 @@ out: #define DEFAULT_24_AIO 0 static int init_aio_26(void) { - unsigned long stack; int err; if(io_setup(256, &ctx)){ @@ -263,7 +262,7 @@ static int init_aio_26(void) } err = run_helper_thread(aio_thread, NULL, - CLONE_FILES | CLONE_VM | SIGCHLD, &stack, 0); + CLONE_FILES | CLONE_VM | SIGCHLD, &aio_stack); if(err < 0) return err; @@ -365,8 +364,10 @@ __initcall(init_aio); static void exit_aio(void) { - if(aio_pid != -1) + if (aio_pid != -1) { os_kill_process(aio_pid, 1); + free_stack(aio_stack, 0); + } } __uml_exitcall(exit_aio); |