A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 11:11:45 -04:00
Code Issues Projects Releases Packages Wiki Activity

Merge 3.16-rc6 into driver-core-next

Browse source 
We want the platform changes in here as well.

Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Greg Kroah-Hartman 2014-07-21 10:07:25 -07:00
commit 90125edbc4
441 changed files with 3865 additions and 2190 deletions
Download patch file Download diff file Expand all files Collapse all files

30
fs/kernfs/mount.c
View file

@ -211,6 +211,36 @@ void kernfs_kill_sb(struct super_block *sb)
kernfs_put(root_kn);
}
/**
* kernfs_pin_sb: try to pin the superblock associated with a kernfs_root
* @kernfs_root: the kernfs_root in question
* @ns: the namespace tag
*
* Pin the superblock so the superblock won't be destroyed in subsequent
* operations. This can be used to block ->kill_sb() which may be useful
* for kernfs users which dynamically manage superblocks.
*
* Returns NULL if there's no superblock associated to this kernfs_root, or
* -EINVAL if the superblock is being freed.
*/
struct super_block *kernfs_pin_sb(struct kernfs_root *root, const void *ns)
{
struct kernfs_super_info *info;
struct super_block *sb = NULL;
mutex_lock(&kernfs_mutex);
list_for_each_entry(info, &root->supers, node) {
if (info->ns == ns) {
sb = info->sb;
if (!atomic_inc_not_zero(&info->sb->s_active))
sb = ERR_PTR(-EINVAL);
break;
}
}
mutex_unlock(&kernfs_mutex);
return sb;
}
void __init kernfs_init(void)
{
kernfs_node_cache = kmem_cache_create("kernfs_node_cache",