Commit 8f7a458b authored by Neil Brown's avatar Neil Brown Committed by Linus Torvalds

[PATCH] knfsd: find a delegation for a file given a stateid.

Signed-off-by: default avatarAndy Adamson <andros@citi.umich.edu>
Signed-off-by: default avatarNeil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 4477196c
......@@ -81,6 +81,7 @@ u32 free_delegation= 0;
/* forward declarations */
struct nfs4_stateid * find_stateid(stateid_t *stid, int flags);
static struct nfs4_delegation * find_delegation_stateid(struct inode *ino, stateid_t *stid);
/* Locking:
*
......@@ -2056,6 +2057,32 @@ find_stateid(stateid_t *stid, int flags)
return NULL;
}
static struct nfs4_delegation *
find_delegation_stateid(struct inode *ino, stateid_t *stid)
{
struct nfs4_delegation *dp = NULL;
struct nfs4_file *fp = NULL;
u32 st_id;
unsigned int fi_hashval;
dprintk("NFSD:find_delegation_stateid stateid=(%08x/%08x/%08x/%08x)\n",
stid->si_boot, stid->si_stateownerid,
stid->si_fileid, stid->si_generation);
if(!ino || !stid)
return NULL;
st_id = stid->si_stateownerid;
fi_hashval = file_hashval(ino);
if (find_file(fi_hashval, ino, &fp)) {
list_for_each_entry(dp, &fp->fi_del_perfile, dl_del_perfile) {
if(dp->dl_stateid.si_stateownerid == st_id) {
dprintk("NFSD: find_delegation dp %p\n",dp);
return dp;
}
}
}
return NULL;
}
/*
* TODO: Linux file offsets are _signed_ 64-bit quantities, which means that
......
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