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SUNRPC: Remove non-RCU protected lookup

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Clean up the cache code by removing the non-RCU protected lookup.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Trond Myklebust
2018-10-01 10:41:51 -04:00
committed by J. Bruce Fields
parent a6482733bc
commit d48cf356a1
3 changed files with 7 additions and 66 deletions
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6
Documentation/filesystems/nfs/rpc-cache.txt
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@@ -84,7 +84,7 @@ Creating a Cache
A message from user space has arrived to fill out a
cache entry. It is in 'buf' of length 'len'.
cache_parse should parse this, find the item in the
cache with sunrpc_cache_lookup, and update the item
cache with sunrpc_cache_lookup_rcu, and update the item
with sunrpc_cache_update.
@@ -95,7 +95,7 @@ Creating a Cache
Using a cache
-------------
To find a value in a cache, call sunrpc_cache_lookup passing a pointer
To find a value in a cache, call sunrpc_cache_lookup_rcu passing a pointer
to the cache_head in a sample item with the 'key' fields filled in.
This will be passed to ->match to identify the target entry. If no
entry is found, a new entry will be create, added to the cache, and
@@ -116,7 +116,7 @@ item does become valid, the deferred copy of the request will be
revisited (->revisit). It is expected that this method will
reschedule the request for processing.
The value returned by sunrpc_cache_lookup can also be passed to
The value returned by sunrpc_cache_lookup_rcu can also be passed to
sunrpc_cache_update to set the content for the item. A second item is
passed which should hold the content. If the item found by _lookup
has valid data, then it is discarded and a new item is created. This