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sunrpc: extract some common sunrpc_cache code from nfsd 

Rather can duplicating this idiom twice, put it in an inline function.
This reduces the usage of 'expiry_time' out side the sunrpc/cache.c
code and thus the impact of a change that is about to be made to that
field.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
NeilBrown 2010-08-12 16:55:22 +10:00 committed by J. Bruce Fields
parent 1132b26029
commit 17cebf658e
2 changed files with 9 additions and 6 deletions
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9
fs/nfsd/export.c
View File

@ -935,10 +935,9 @@ static void exp_fsid_unhash(struct svc_export *exp)
ek = exp_get_fsid_key(exp->ex_client, exp->ex_fsid);
if (!IS_ERR(ek)) {
ek->h.expiry_time = get_seconds()-1;
sunrpc_invalidate(&ek->h, &svc_expkey_cache);
cache_put(&ek->h, &svc_expkey_cache);
}
svc_expkey_cache.nextcheck = get_seconds();
}
static int exp_fsid_hash(svc_client *clp, struct svc_export *exp)
@ -973,10 +972,9 @@ static void exp_unhash(struct svc_export *exp)
ek = exp_get_key(exp->ex_client, inode->i_sb->s_dev, inode->i_ino);
if (!IS_ERR(ek)) {
ek->h.expiry_time = get_seconds()-1;
sunrpc_invalidate(&ek->h, &svc_expkey_cache);
cache_put(&ek->h, &svc_expkey_cache);
}
svc_expkey_cache.nextcheck = get_seconds();
}
/*
@ -1097,8 +1095,7 @@ out:
static void
exp_do_unexport(svc_export *unexp)
{
unexp->h.expiry_time = get_seconds()-1;
svc_export_cache.nextcheck = get_seconds();
sunrpc_invalidate(&unexp->h, &svc_export_cache);
exp_unhash(unexp);
exp_fsid_unhash(unexp);
}

6
include/linux/sunrpc/cache.h
View File

@ -228,4 +228,10 @@ static inline time_t get_expiry(char **bpp)
return rv;
}
static inline void sunrpc_invalidate(struct cache_head *h,
struct cache_detail *detail)
{
h->expiry_time = get_seconds() - 1;
detail->nextcheck = get_seconds();
}
#endif /* _LINUX_SUNRPC_CACHE_H_ */