From f2af793db02d2c2f677bdb5bf8e0efdcbf9c0256 Mon Sep 17 00:00:00 2001 From: Olaf Kirch Date: Wed, 4 Oct 2006 02:15:59 -0700 Subject: [PATCH] knfsd: lockd: make nlm_traverse_* more flexible This patch makes nlm_traverse{locks,blocks,shares} and friends use a function pointer rather than a "action" enum. This function pointer is given two nlm_hosts (one given by the caller, the other taken from the lock/block/share currently visited), and is free to do with them as it wants. If it returns a non-zero value, the lockd/block/share is released. Signed-off-by: Olaf Kirch Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/lockd/svclock.c | 33 ++++++++------------------------- 1 file changed, 8 insertions(+), 25 deletions(-) (limited to 'fs/lockd/svclock.c') diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c index 7209712f3832..1f91567a1b88 100644 --- a/fs/lockd/svclock.c +++ b/fs/lockd/svclock.c @@ -265,24 +265,20 @@ static void nlmsvc_release_block(struct nlm_block *block) kref_put(&block->b_count, nlmsvc_free_block); } -static void nlmsvc_act_mark(struct nlm_host *host, struct nlm_file *file) -{ - struct nlm_block *block; - - down(&file->f_sema); - list_for_each_entry(block, &file->f_blocks, b_flist) - block->b_host->h_inuse = 1; - up(&file->f_sema); -} - -static void nlmsvc_act_unlock(struct nlm_host *host, struct nlm_file *file) +/* + * Loop over all blocks and delete blocks held by + * a matching host. + */ +void nlmsvc_traverse_blocks(struct nlm_host *host, + struct nlm_file *file, + nlm_host_match_fn_t match) { struct nlm_block *block, *next; restart: down(&file->f_sema); list_for_each_entry_safe(block, next, &file->f_blocks, b_flist) { - if (host != NULL && host != block->b_host) + if (!match(block->b_host, host)) continue; /* Do not destroy blocks that are not on * the global retry list - why? */ @@ -297,19 +293,6 @@ restart: up(&file->f_sema); } -/* - * Loop over all blocks and perform the action specified. - * (NLM_ACT_CHECK handled by nlmsvc_inspect_file). - */ -void -nlmsvc_traverse_blocks(struct nlm_host *host, struct nlm_file *file, int action) -{ - if (action == NLM_ACT_MARK) - nlmsvc_act_mark(host, file); - else - nlmsvc_act_unlock(host, file); -} - /* * Initialize arguments for GRANTED call. The nlm_rqst structure * has been cleared already. -- cgit v1.2.3-70-g09d2