From b5e618181a927210f8be1d3d2249d31904ba358d Mon Sep 17 00:00:00 2001 From: Pavel Emelianov Date: Tue, 8 May 2007 00:30:19 -0700 Subject: Introduce a handy list_first_entry macro There are many places in the kernel where the construction like foo = list_entry(head->next, struct foo_struct, list); are used. The code might look more descriptive and neat if using the macro list_first_entry(head, type, member) \ list_entry((head)->next, type, member) Here is the macro itself and the examples of its usage in the generic code. If it will turn out to be useful, I can prepare the set of patches to inject in into arch-specific code, drivers, networking, etc. Signed-off-by: Pavel Emelianov Signed-off-by: Kirill Korotaev Cc: Randy Dunlap Cc: Andi Kleen Cc: Zach Brown Cc: Davide Libenzi Cc: John McCutchan Cc: Thomas Gleixner Cc: Ingo Molnar Cc: john stultz Cc: Ram Pai Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/namespace.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/namespace.c') diff --git a/fs/namespace.c b/fs/namespace.c index c5b88100d914..72bb1062bfe7 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -499,7 +499,7 @@ void release_mounts(struct list_head *head) { struct vfsmount *mnt; while (!list_empty(head)) { - mnt = list_entry(head->next, struct vfsmount, mnt_hash); + mnt = list_first_entry(head, struct vfsmount, mnt_hash); list_del_init(&mnt->mnt_hash); if (mnt->mnt_parent != mnt) { struct dentry *dentry; @@ -1177,7 +1177,7 @@ static void expire_mount_list(struct list_head *graveyard, struct list_head *mou while (!list_empty(graveyard)) { LIST_HEAD(umounts); - mnt = list_entry(graveyard->next, struct vfsmount, mnt_expire); + mnt = list_first_entry(graveyard, struct vfsmount, mnt_expire); list_del_init(&mnt->mnt_expire); /* don't do anything if the namespace is dead - all the -- cgit v1.2.3