Tejun Heo abd54f028e kernfs: replace kernfs_node->u.completion with kernfs_root->deactivate_waitq ... kernfs_node->u.completion is used to notify deactivation completion from kernfs_put_active() to kernfs_deactivate(). We now allow multiple racing removals of the same node and the current removal scheme is no longer correct - kernfs_remove() invocation may return before the node is properly deactivated if it races against another removal. The removal path will be restructured to address the issue. To help such restructure which requires supporting multiple waiters, this patch replaces kernfs_node->u.completion with kernfs_root->deactivate_waitq. This makes deactivation event notifications share a per-root waitqueue_head; however, the wait path is quite cold and this will also allow shaving one pointer off kernfs_node. v2: Refreshed on top of ("kernfs: make kernfs_deactivate() honor KERNFS_LOCKDEP flag"). Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2014-02-07 15:42:40 -08:00
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dir.c	kernfs: replace kernfs_node->u.completion with kernfs_root->deactivate_waitq	2014-02-07 15:42:40 -08:00
file.c	kernfs: associate a new kernfs_node with its parent on creation	2014-01-17 11:50:07 -08:00
inode.c	kernfs: s/sysfs/kernfs/ in internal functions and whatever is left	2013-12-11 17:39:20 -08:00
kernfs-internal.h	kernfs: associate a new kernfs_node with its parent on creation	2014-01-17 11:50:07 -08:00
Makefile	sysfs, kernfs: add skeletons for kernfs	2013-11-27 13:28:24 -08:00
mount.c	kernfs: s/sysfs/kernfs/ in internal functions and whatever is left	2013-12-11 17:39:20 -08:00
symlink.c	kernfs: associate a new kernfs_node with its parent on creation	2014-01-17 11:50:07 -08:00