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[PATCH] uml: locking documentation

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Some locking documentation and a cleanup.  uml_exitcode is copied into a local
before sprintf sees it, in case sprintf does anything non-atomic with it.

The rest are comments about why certain globals don't need any kind of
locking.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeff Dike
2006-09-29 01:58:50 -07:00
committed by Linus Torvalds
parent b10aeeef55
commit 730760e90a
5 changed files with 14 additions and 2 deletions
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4
arch/um/drivers/random.c
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@@ -20,6 +20,10 @@
#define RNG_MISCDEV_MINOR 183 /* official */
/* Changed at init time, in the non-modular case, and at module load
* time, in the module case. Presumably, the module subsystem
* protects against a module being loaded twice at the same time.
*/
static int random_fd = -1;
static int rng_dev_open (struct inode *inode, struct file *filp)