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SUNRPC: change cache_head.flags bits to enum

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When a sequence of numbers are needed for internal-use only, an enum is
typically best.  The sequence will inevitably need to be changed one
day, and having an enum means the developer doesn't need to think about
renumbering after insertion or deletion.  Such patches will be easier
to review.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
NeilBrown
2023-07-29 14:31:55 -04:00
committed by Chuck Lever
parent c743b4259c
commit ba4bba6c97
1 changed files with 8 additions and 4 deletions
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12
include/linux/sunrpc/cache.h
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@@ -56,10 +56,14 @@ struct cache_head {
struct kref ref;
unsigned long flags;
};
#define CACHE_VALID 0 /* Entry contains valid data */
#define CACHE_NEGATIVE 1 /* Negative entry - there is no match for the key */
#define CACHE_PENDING 2 /* An upcall has been sent but no reply received yet*/
#define CACHE_CLEANED 3 /* Entry has been cleaned from cache */
/* cache_head.flags */
enum {
CACHE_VALID, /* Entry contains valid data */
CACHE_NEGATIVE, /* Negative entry - there is no match for the key */
CACHE_PENDING, /* An upcall has been sent but no reply received yet*/
CACHE_CLEANED, /* Entry has been cleaned from cache */
};
#define CACHE_NEW_EXPIRY 120 /* keep new things pending confirmation for 120 seconds */