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sunrpc: add a cache_notify callback

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A later patch will be changing the kernel to send a netlink notification
when there is a pending cache_request. Add a new cache_notify operation
to struct cache_detail for this purpose.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Jeff Layton 2026-03-25 10:40:26 -04:00 committed by Chuck Lever
parent 8bfc7e13ee
commit d52db76f2d
2 changed files with 5 additions and 0 deletions
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3
include/linux/sunrpc/cache.h
View File

@ -80,6 +80,9 @@ struct cache_detail {
int (*cache_upcall)(struct cache_detail *,
struct cache_head *);
int (*cache_notify)(struct cache_detail *cd,
struct cache_head *h);
void (*cache_request)(struct cache_detail *cd,
struct cache_head *ch,
char **bpp, int *blen);

2
net/sunrpc/cache.c
View File

@ -1233,6 +1233,8 @@ static int cache_do_upcall(struct cache_detail *detail, struct cache_head *h)
/* Lost a race, no longer PENDING, so don't enqueue */
ret = -EAGAIN;
spin_unlock(&detail->queue_lock);
if (ret != -EAGAIN && detail->cache_notify)
detail->cache_notify(detail, h);
wake_up(&detail->queue_wait);
if (ret == -EAGAIN) {
kfree(buf);