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| author | Matthew Wilcox <willy@infradead.org> | 2018-07-11 14:02:22 -0700 |
|---|---|---|
| committer | Dominique Martinet <dominique.martinet@cea.fr> | 2018-08-13 09:21:44 +0900 |
| commit | f28cdf0430fc92acaa718e15598bdad6cb236a4d (patch) | |
| tree | 26c62e06986d2a7a46680c272b2db065cda9a38c /include/net | |
| parent | b5303be2bee3c8b29de3f7f4ea8ae00c4e816760 (diff) | |
| download | linux-f28cdf0430fc92acaa718e15598bdad6cb236a4d.tar.bz2 | |
9p: Replace the fidlist with an IDR
The p9_idpool being used to allocate the IDs uses an IDR to allocate
the IDs ... which we then keep in a doubly-linked list, rather than in
the IDR which allocated them. We can use an IDR directly which saves
two pointers per p9_fid, and a tiny memory allocation per p9_client.
Link: http://lkml.kernel.org/r/20180711210225.19730-4-willy@infradead.org
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@sandia.gov>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/9p/client.h | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/include/net/9p/client.h b/include/net/9p/client.h index 7af9d769b97d..e405729cd1c7 100644 --- a/include/net/9p/client.h +++ b/include/net/9p/client.h @@ -27,6 +27,7 @@ #define NET_9P_CLIENT_H #include <linux/utsname.h> +#include <linux/idr.h> /* Number of requests per row */ #define P9_ROW_MAXTAG 255 @@ -128,8 +129,7 @@ struct p9_req_t { * @proto_version: 9P protocol version to use * @trans_mod: module API instantiated with this client * @trans: tranport instance state and API - * @fidpool: fid handle accounting for session - * @fidlist: List of active fid handles + * @fids: All active FID handles * @tagpool - transaction id accounting for session * @reqs - 2D array of requests * @max_tag - current maximum tag id allocated @@ -169,8 +169,7 @@ struct p9_client { } tcp; } trans_opts; - struct p9_idpool *fidpool; - struct list_head fidlist; + struct idr fids; struct p9_idpool *tagpool; struct p9_req_t *reqs[P9_ROW_MAXTAG]; @@ -188,7 +187,6 @@ struct p9_client { * @iounit: the server reported maximum transaction size for this file * @uid: the numeric uid of the local user who owns this handle * @rdir: readdir accounting structure (allocated on demand) - * @flist: per-client-instance fid tracking * @dlist: per-dentry fid tracking * * TODO: This needs lots of explanation. @@ -204,7 +202,6 @@ struct p9_fid { void *rdir; - struct list_head flist; struct hlist_node dlist; /* list of all fids attached to a dentry */ }; |