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authorTejun Heo <htejun@gmail.com>2007-06-14 03:45:17 +0900
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-11 16:09:06 -0700
commit7b595756ec1f49e0049a9e01a1298d53a7faaa15 (patch)
treecd06687ab3e5c7a5a4ef91903dff207a18c4db76 /kernel
parentdbde0fcf9f8f6d477af3c32d9979e789ee680cde (diff)
downloadop-kernel-dev-7b595756ec1f49e0049a9e01a1298d53a7faaa15.zip
op-kernel-dev-7b595756ec1f49e0049a9e01a1298d53a7faaa15.tar.gz
sysfs: kill unnecessary attribute->owner
sysfs is now completely out of driver/module lifetime game. After deletion, a sysfs node doesn't access anything outside sysfs proper, so there's no reason to hold onto the attribute owners. Note that often the wrong modules were accounted for as owners leading to accessing removed modules. This patch kills now unnecessary attribute->owner. Note that with this change, userland holding a sysfs node does not prevent the backing module from being unloaded. For more info regarding lifetime rule cleanup, please read the following message. http://article.gmane.org/gmane.linux.kernel/510293 (tweaked by Greg to not delete the field just yet, to make it easier to merge things properly.) Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/module.c9
-rw-r--r--kernel/params.c1
2 files changed, 3 insertions, 7 deletions
diff --git a/kernel/module.c b/kernel/module.c
index 9bd93de..015d60c 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -488,8 +488,7 @@ static void free_modinfo_##field(struct module *mod) \
mod->field = NULL; \
} \
static struct module_attribute modinfo_##field = { \
- .attr = { .name = __stringify(field), .mode = 0444, \
- .owner = THIS_MODULE }, \
+ .attr = { .name = __stringify(field), .mode = 0444 }, \
.show = show_modinfo_##field, \
.setup = setup_modinfo_##field, \
.test = modinfo_##field##_exists, \
@@ -793,7 +792,7 @@ static ssize_t show_refcnt(struct module_attribute *mattr,
}
static struct module_attribute refcnt = {
- .attr = { .name = "refcnt", .mode = 0444, .owner = THIS_MODULE },
+ .attr = { .name = "refcnt", .mode = 0444 },
.show = show_refcnt,
};
@@ -851,7 +850,7 @@ static ssize_t show_initstate(struct module_attribute *mattr,
}
static struct module_attribute initstate = {
- .attr = { .name = "initstate", .mode = 0444, .owner = THIS_MODULE },
+ .attr = { .name = "initstate", .mode = 0444 },
.show = show_initstate,
};
@@ -1032,7 +1031,6 @@ static void add_sect_attrs(struct module *mod, unsigned int nsect,
sattr->mattr.show = module_sect_show;
sattr->mattr.store = NULL;
sattr->mattr.attr.name = sattr->name;
- sattr->mattr.attr.owner = mod;
sattr->mattr.attr.mode = S_IRUGO;
*(gattr++) = &(sattr++)->mattr.attr;
}
@@ -1090,7 +1088,6 @@ int module_add_modinfo_attrs(struct module *mod)
if (!attr->test ||
(attr->test && attr->test(mod))) {
memcpy(temp_attr, attr, sizeof(*temp_attr));
- temp_attr->attr.owner = mod;
error = sysfs_create_file(&mod->mkobj.kobj,&temp_attr->attr);
++temp_attr;
}
diff --git a/kernel/params.c b/kernel/params.c
index e61c46c..effbaae 100644
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -491,7 +491,6 @@ param_sysfs_setup(struct module_kobject *mk,
pattr->mattr.show = param_attr_show;
pattr->mattr.store = param_attr_store;
pattr->mattr.attr.name = (char *)&kp->name[name_skip];
- pattr->mattr.attr.owner = mk->mod;
pattr->mattr.attr.mode = kp->perm;
*(gattr++) = &(pattr++)->mattr.attr;
}
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