linux kernel: update to 3.12

1 files changed, 0 insertions, 77 deletions

diff --git a/abs/core/linux/module-init-wait-3.6.patch b/abs/core/linux/module-init-wait-3.6.patch
deleted file mode 100644
index 1bcfd24..0000000
--- a/abs/core/linux/module-init-wait-3.6.patch
+++ /dev/null
@@ -1,77 +0,0 @@
-From: Rusty Russell <rusty@rustcorp.com.au>
-Date: Fri, 28 Sep 2012 05:01:03 +0000 (+0930)
-Subject: module: wait when loading a module which is currently initializing.
-X-Git-Tag: v3.7-rc1~2^2~32
-X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=9bb9c3be568346538
-
-module: wait when loading a module which is currently initializing.
-
-The original module-init-tools module loader used a fnctl lock on the
-.ko file to avoid attempts to simultaneously load a module.
-Unfortunately, you can't get an exclusive fcntl lock on a read-only
-fd, making this not work for read-only mounted filesystems.
-module-init-tools has a hacky sleep-and-loop for this now.
-
-It's not that hard to wait in the kernel, and only return -EEXIST once
-the first module has finished loading (or continue loading the module
-if the first one failed to initialize for some reason).  It's also
-consistent with what we do for dependent modules which are still loading.
-
-Suggested-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
-Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
----
-
-diff --git a/kernel/module.c b/kernel/module.c
-index 63cf6e7..74bc195 100644
---- a/kernel/module.c
-+++ b/kernel/module.c
-@@ -2845,6 +2845,20 @@ static int post_relocation(struct module *mod, const struct load_info *info)
- 	return module_finalize(info->hdr, info->sechdrs, mod);
- }
- 
-+/* Is this module of this name done loading?  No locks held. */
-+static bool finished_loading(const char *name)
-+{
-+	struct module *mod;
-+	bool ret;
-+
-+	mutex_lock(&module_mutex);
-+	mod = find_module(name);
-+	ret = !mod || mod->state != MODULE_STATE_COMING;
-+	mutex_unlock(&module_mutex);
-+
-+	return ret;
-+}
-+
- /* Allocate and load the module: note that size of section 0 is always
-    zero, and we rely on this for optional sections. */
- static struct module *load_module(void __user *umod,
-@@ -2852,7 +2866,7 @@ static struct module *load_module(void __user *umod,
- 				  const char __user *uargs)
- {
- 	struct load_info info = { NULL, };
--	struct module *mod;
-+	struct module *mod, *old;
- 	long err;
- 
- 	pr_debug("load_module: umod=%p, len=%lu, uargs=%p\n",
-@@ -2918,8 +2932,18 @@ static struct module *load_module(void __user *umod,
- 	 * function to insert in a way safe to concurrent readers.
- 	 * The mutex protects against concurrent writers.
- 	 */
-+again:
- 	mutex_lock(&module_mutex);
--	if (find_module(mod->name)) {
-+	if ((old = find_module(mod->name)) != NULL) {
-+		if (old->state == MODULE_STATE_COMING) {
-+			/* Wait in case it fails to load. */
-+			mutex_unlock(&module_mutex);
-+			err = wait_event_interruptible(module_wq,
-+					       finished_loading(mod->name));
-+			if (err)
-+				goto free_arch_cleanup;
-+			goto again;
-+		}
- 		err = -EEXIST;
- 		goto unlock;
- 	}