tree 5c28962f355c545f888ab7b8e95e8bce5c2de599
parent 3049cfe24ef3872ba74f90630356722cf988b80d
author Christoph Hellwig <hch@infradead.org> 1286703386 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1288056373 -0400

fs: clean up dentry lru modification

Always do a list_del_init on the LRU to make sure the list_empty invariant for
not beeing on the LRU always holds true, and fold dentry_lru_del_init into
dentry_lru_del.  Replace the dentry_lru_add_tail primitive with a
dentry_lru_move_tail operations that simpler when the dentry already is one
the list, which is always is.  Move the list_empty into dentry_lru_add to
fit the scheme of the other lru helpers, and simplify locking once we
move to a separate LRU lock.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>