]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
rhashtable: allow rht_bucket_var to return NULL.
authorNeilBrown <neilb@suse.com>
Mon, 1 Apr 2019 23:07:45 +0000 (10:07 +1100)
committerDavid S. Miller <davem@davemloft.net>
Mon, 8 Apr 2019 02:12:12 +0000 (19:12 -0700)
commitff302db965b57c141297911ea647d36d11fedfbe
tree4b6cdddf64de3c58e867a1886e5240c078df121b
parent7a41c294c1463100fdc82a356e22e36bbaa6b0f9
rhashtable: allow rht_bucket_var to return NULL.

Rather than returning a pointer to a static nulls, rht_bucket_var()
now returns NULL if the bucket doesn't exist.
This will make the next patch, which stores a bitlock in the
bucket pointer, somewhat cleaner.

This change involves introducing __rht_bucket_nested() which is
like rht_bucket_nested(), but doesn't provide the static nulls,
and changing rht_bucket_nested() to call this and possible
provide a static nulls - as is still needed for the non-var case.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/rhashtable.h
lib/rhashtable.c