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authorJ. Bruce Fields <bfields@redhat.com>2021-12-07 17:32:21 -0500
committerChuck Lever <chuck.lever@oracle.com>2022-01-08 14:42:01 -0500
commit3dcd1d8aab00c5d3a0a3725253c86440b1a0f5a7 (patch)
tree86652ac2c3ccb29826ef6024f8d9cd261d7fa729 /fs/nfsd/state.h
parent70e94d757b3e1f46486d573729d84c8955c81dce (diff)
nfsd: improve stateid access bitmask documentation
The use of the bitmaps is confusing. Add a cross-reference to make it easier to find the existing comment. Add an updated reference with URL to make it quicker to look up. And a bit more editorializing about the value of this. Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/state.h')
-rw-r--r--fs/nfsd/state.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index e73bdbb1634a..6eb3c7157214 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -568,6 +568,10 @@ struct nfs4_ol_stateid {
struct list_head st_locks;
struct nfs4_stateowner *st_stateowner;
struct nfs4_clnt_odstate *st_clnt_odstate;
+/*
+ * These bitmasks use 3 separate bits for READ, ALLOW, and BOTH; see the
+ * comment above bmap_to_share_mode() for explanation:
+ */
unsigned char st_access_bmap;
unsigned char st_deny_bmap;
struct nfs4_ol_stateid *st_openstp;