include/linux/coda_cache.h

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 1 /* Coda filesystem -- Linux Minicache
 2  *
 3  * Copyright (C) 1989 - 1997 Carnegie Mellon University
 4  *
 5  * Carnegie Mellon University encourages users of this software to
 6  * contribute improvements to the Coda project. Contact Peter Braam
 7  * <coda@cs.cmu.edu>
 8  */
 9
 10 #ifndef _CFSNC_HEADER_
 11 #define _CFSNC_HEADER_
 12
 13 /*
 14  * Structure for an element in the Coda Credential Cache.
 15  */
 16
 17 struct coda_cache {
 18 struct list_head cc_cclist;/* list of all cache entries */
 19 struct list_head cc_cnlist;/* list of cache entries/cnode */
 20 int cc_mask;
 21 struct coda_cred cc_cred;
 22 };
 23
 24 voidcoda_ccinsert(struct coda_cache *el,struct super_block *sb);
 25 voidcoda_cninsert(struct coda_cache *el,struct coda_inode_info *cnp);
 26 voidcoda_ccremove(struct coda_cache *el);
 27 voidcoda_cnremove(struct coda_cache *el);
 28 voidcoda_cache_create(struct inode *inode,int mask);
 29 struct coda_cache *coda_cache_find(struct inode *inode);
 30 voidcoda_cache_enter(struct inode *inode,int mask);
 31 voidcoda_cache_clear_cnp(struct coda_inode_info *cnp);
 32 voidcoda_cache_clear_all(struct super_block *sb);
 33 voidcoda_cache_clear_cred(struct super_block *sb,struct coda_cred *cred);
 34 intcoda_cache_check(struct inode *inode,int mask);
 35 voidcoda_dentry_delete(struct dentry *dentry);
 36 voidcoda_zapfid(struct ViceFid *fid,struct super_block *sb,int flag);
 37
 38
 39 /*
 40  * Structure to contain statistics on the cache usage
 41  */
 42
 43 struct cfsnc_statistics {
 44 unsigned hits;
 45 unsigned misses;
 46 unsigned enters;
 47 unsigned dbl_enters;
 48 unsigned long_name_enters;
 49 unsigned long_name_lookups;
 50 unsigned long_remove;
 51 unsigned lru_rm;
 52 unsigned zapPfids;
 53 unsigned zapFids;
 54 unsigned zapFile;
 55 unsigned zapUsers;
 56 unsigned Flushes;
 57 unsigned Sum_bucket_len;
 58 unsigned Sum2_bucket_len;
 59 unsigned Max_bucket_len;
 60 unsigned Num_zero_len;
 61 unsigned Search_len;
 62 };
 63
 64
 65 #define CFSNC_FIND ((u_long) 1)
 66 #define CFSNC_REMOVE ((u_long) 2)
 67 #define CFSNC_INIT ((u_long) 3)
 68 #define CFSNC_ENTER ((u_long) 4)
 69 #define CFSNC_LOOKUP ((u_long) 5)
 70 #define CFSNC_ZAPPFID ((u_long) 6)
 71 #define CFSNC_ZAPFID ((u_long) 7)
 72 #define CFSNC_ZAPVNODE ((u_long) 8)
 73 #define CFSNC_ZAPFILE ((u_long) 9)
 74 #define CFSNC_PURGEUSER ((u_long) 10)
 75 #define CFSNC_FLUSH ((u_long) 11)
 76 #define CFSNC_PRINTCFSNC ((u_long) 12)
 77 #define CFSNC_PRINTSTATS ((u_long) 13)
 78 #define CFSNC_REPLACE ((u_long) 14)
 79
 80 #endif _CFSNC_HEADER_