The new ctl_table_size element will hold the size of the ctl_table contained in the header. This value is passed by the callers to the sysctl register infrastructure. This is a preparation commit that allows us to systematically add ctl_table_size and start using it only when it is in all the places where there is a sysctl registration. Signed-off-by: Joel Granados <j.granados@xxxxxxxxxxx> --- include/linux/sysctl.h | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 59d451f455bf..33252ad58ebe 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -159,12 +159,22 @@ struct ctl_node { struct ctl_table_header *header; }; -/* struct ctl_table_header is used to maintain dynamic lists of - struct ctl_table trees. */ +/** + * struct ctl_table_header - maintains dynamic lists of struct ctl_table trees + * @ctl_table: pointer to the first element in ctl_table array + * @ctl_table_size: number of elements pointed by @ctl_table + * @used: The entry will never be touched when equal to 0. + * @count: Upped every time something is added to @inodes and downed every time + * something is removed from inodes + * @nreg: When nreg drops to 0 the ctl_table_header will be unregistered. + * @rcu: Delays the freeing of the inode. Introduced with "unfuck proc_sysctl ->d_compare()" + * + */ struct ctl_table_header { union { struct { struct ctl_table *ctl_table; + int ctl_table_size; int used; int count; int nreg; -- 2.30.2