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authorJ. Bruce Fields <bfields@redhat.com>2010-10-30 23:35:04 -0400
committerJ. Bruce Fields <bfields@redhat.com>2011-01-04 16:49:27 -0500
commitc84d500bc41658165ceb0dd04dc6a75249940fba (patch)
tree95ad867b5fb4807f5f8c1172a0797e70d5e96168 /fs/nfsd
parente63eb9375089f9d2041305d04c3f33a194e0e014 (diff)
nfsd4: use a single struct file for delegations
When we converted to sharing struct filess between nfs4 opens I went too far and also used the same mechanism for delegations. But keeping a reference to the struct file ensures it will outlast the lease, and allows us to remove the lease with the same file as we added it. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4state.c10
-rw-r--r--fs/nfsd/state.h1
2 files changed, 6 insertions, 5 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 2e44ad2539a..cbe1b81c147 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -230,7 +230,8 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_f
dp->dl_client = clp;
get_nfs4_file(fp);
dp->dl_file = fp;
- nfs4_file_get_access(fp, O_RDONLY);
+ dp->dl_vfs_file = find_readable_file(fp);
+ get_file(dp->dl_vfs_file);
dp->dl_flock = NULL;
dp->dl_type = type;
dp->dl_stateid.si_boot = boot_time;
@@ -252,6 +253,7 @@ nfs4_put_delegation(struct nfs4_delegation *dp)
if (atomic_dec_and_test(&dp->dl_count)) {
dprintk("NFSD: freeing dp %p\n",dp);
put_nfs4_file(dp->dl_file);
+ fput(dp->dl_vfs_file);
kmem_cache_free(deleg_slab, dp);
num_delegations--;
}
@@ -265,12 +267,10 @@ nfs4_put_delegation(struct nfs4_delegation *dp)
static void
nfs4_close_delegation(struct nfs4_delegation *dp)
{
- struct file *filp = find_readable_file(dp->dl_file);
-
dprintk("NFSD: close_delegation dp %p\n",dp);
+ /* XXX: do we even need this check?: */
if (dp->dl_flock)
- vfs_setlease(filp, F_UNLCK, &dp->dl_flock);
- nfs4_file_put_access(dp->dl_file, O_RDONLY);
+ vfs_setlease(dp->dl_vfs_file, F_UNLCK, &dp->dl_flock);
}
/* Called under the state lock. */
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 39adc27b068..84b230217b1 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -81,6 +81,7 @@ struct nfs4_delegation {
atomic_t dl_count; /* ref count */
struct nfs4_client *dl_client;
struct nfs4_file *dl_file;
+ struct file *dl_vfs_file;
struct file_lock *dl_flock;
u32 dl_type;
time_t dl_time;