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| author | Jeff Layton <jlayton@kernel.org> | 2026-03-25 17:40:27 +0300 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2026-06-01 18:08:18 +0300 |
| commit | c13ecd47648cc98e9f324ce4bcaa3d0654c3c91c (patch) | |
| tree | af3f8861fcf83690f22686f6b168f451add921dd /include/linux | |
| parent | d52db76f2d3559292b7af7c43ad9a635e017cac8 (diff) | |
| download | linux-c13ecd47648cc98e9f324ce4bcaa3d0654c3c91c.tar.xz | |
sunrpc: add helpers to count and snapshot pending cache requests
Add sunrpc_cache_requests_count() and sunrpc_cache_requests_snapshot()
to allow callers to count and snapshot the pending upcall request list
without exposing struct cache_request outside of cache.c.
Both functions skip entries that no longer have CACHE_PENDING set.
The snapshot function takes a cache_get() reference on each item so the
caller can safely use them after the queue_lock is released.
These will be used by the nfsd generic netlink dumpit handler for
svc_export upcall requests.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sunrpc/cache.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h index c358151c2395..f88dc6bb17c7 100644 --- a/include/linux/sunrpc/cache.h +++ b/include/linux/sunrpc/cache.h @@ -251,6 +251,12 @@ extern int sunrpc_cache_register_pipefs(struct dentry *parent, const char *, extern void sunrpc_cache_unregister_pipefs(struct cache_detail *); extern void sunrpc_cache_unhash(struct cache_detail *, struct cache_head *); +int sunrpc_cache_requests_count(struct cache_detail *cd); +int sunrpc_cache_requests_snapshot(struct cache_detail *cd, + struct cache_head **items, + u64 *seqnos, int max, + u64 min_seqno); + /* Must store cache_detail in seq_file->private if using next three functions */ extern void *cache_seq_start_rcu(struct seq_file *file, loff_t *pos); extern void *cache_seq_next_rcu(struct seq_file *file, void *p, loff_t *pos); |