diff options
| author | Jeff Dike <jdike@addtoit.com> | 2007-02-10 01:44:27 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-11 10:51:24 -0800 |
| commit | 9683da91e2db323ee728041576e29ad7fa9547b9 (patch) | |
| tree | 2f069f830727382bd8581691195aaa9addfdd9de /arch/um/os-Linux/aio.c | |
| parent | 6c59e2f593d0c00c78ec48146de6eaf52a342dd5 (diff) | |
[PATCH] uml: AIO locking and tidying
Comment the lack of locking of data that's set up once at boot time.
Also fixed a couple of bogus printks.
Signed-off-by: Jeff Dike <jdike@addtoit.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>
Diffstat (limited to 'arch/um/os-Linux/aio.c')
| -rw-r--r-- | arch/um/os-Linux/aio.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/arch/um/os-Linux/aio.c b/arch/um/os-Linux/aio.c index f897140cc4a..6ff12743a0b 100644 --- a/arch/um/os-Linux/aio.c +++ b/arch/um/os-Linux/aio.c @@ -24,9 +24,6 @@ struct aio_thread_req { struct aio_context *aio; }; -static int aio_req_fd_r = -1; -static int aio_req_fd_w = -1; - #if defined(HAVE_AIO_ABI) #include <linux/aio_abi.h> @@ -111,6 +108,7 @@ static int do_aio(aio_context_t ctx, enum aio_type type, int fd, char *buf, return err; } +/* Initialized in an initcall and unchanged thereafter */ static aio_context_t ctx = 0; static int aio_thread(void *arg) @@ -137,7 +135,7 @@ static int aio_thread(void *arg) err = os_write_file(reply_fd, &reply, sizeof(reply)); if(err != sizeof(reply)) printk("aio_thread - write failed, fd = %d, " - "err = %d\n", aio_req_fd_r, -err); + "err = %d\n", reply_fd, -err); } } return 0; @@ -182,6 +180,11 @@ out: return err; } +/* These are initialized in initcalls and not changed */ +static int aio_req_fd_r = -1; +static int aio_req_fd_w = -1; +static int aio_pid = -1; + static int not_aio_thread(void *arg) { struct aio_thread_req req; @@ -208,14 +211,12 @@ static int not_aio_thread(void *arg) err = os_write_file(req.aio->reply_fd, &reply, sizeof(reply)); if(err != sizeof(reply)) printk("not_aio_thread - write failed, fd = %d, " - "err = %d\n", aio_req_fd_r, -err); + "err = %d\n", req.aio->reply_fd, -err); } return 0; } -static int aio_pid = -1; - static int init_aio_24(void) { unsigned long stack; @@ -308,6 +309,7 @@ static int submit_aio_26(enum aio_type type, int io_fd, char *buf, int len, } #endif +/* Initialized in an initcall and unchanged thereafter */ static int aio_24 = DEFAULT_24_AIO; static int __init set_aio_24(char *name, int *add) |