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sysctl: A more obvious version of grab_header. 

Instead of relying on sysct_head_next(NULL) to magically
return the right header for the root directory instead
explicitly transform NULL into the root directories header.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2012-01-07 06:57:47 -08:00
parent 8d6ecfcc01
commit 3cc3e04636
1 changed files with 4 additions and 4 deletions
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8
fs/proc/proc_sysctl.c
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@ -267,10 +267,10 @@ static struct ctl_table *find_in_table(struct ctl_table *p, struct qstr *name)
static struct ctl_table_header *grab_header(struct inode *inode) static struct ctl_table_header *grab_header(struct inode *inode)
{ {
if (PROC_I(inode)->sysctl) struct ctl_table_header *head = PROC_I(inode)->sysctl;
return sysctl_head_grab(PROC_I(inode)->sysctl); if (!head)
else head = &root_table_header;
return sysctl_head_next(NULL); return sysctl_head_grab(head);
} }
static struct dentry *proc_sys_lookup(struct inode *dir, struct dentry *dentry, static struct dentry *proc_sys_lookup(struct inode *dir, struct dentry *dentry,