diff options
| author |   J. Bruce Fields <bfields@redhat.com> | 2011-01-31 19:20:39 -0500 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2011-02-14 10:35:19 -0500 |
| commit | acfdf5c383b38f7f4dddae41b97c97f1ae058f49 (patch) | |
| tree | f04f5f069191fa984a394154efdf766898bffcaf /fs/nfsd/state.h | |
| parent | nfsd4: modify fi_delegations under recall_lock (diff) | |
| download | linux-dev-acfdf5c383b38f7f4dddae41b97c97f1ae058f49.tar.xz linux-dev-acfdf5c383b38f7f4dddae41b97c97f1ae058f49.zip | |
nfsd4: acquire only one lease per file
Instead of acquiring one lease each time another client opens a file,
nfsd can acquire just one lease to represent all of them, and reference
count it to determine when to release it.
This fixes a regression introduced by
c45821d263a8a5109d69a9e8942b8d65bcd5f31a "locks: eliminate fl_mylease
callback": after that patch, only the struct file * is used to determine
who owns a given lease. But since we recently converted the server to
share a single struct file per open, if we acquire multiple leases on
the same file from nfsd, it then becomes impossible on unlocking a lease
to determine which of those leases (all of whom share the same struct
file *) we meant to remove.
Thanks to Takashi Iwai <tiwai@suse.de> for catching a bug in a previous
version of this patch.
Tested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/nfsd/state.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index 3074656ba7bf..2d31224b07bf 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -83,8 +83,6 @@ 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; /* For recall: */ @@ -379,6 +377,9 @@ struct nfs4_file { */ atomic_t fi_readers; atomic_t fi_writers; + struct file *fi_deleg_file; + struct file_lock *fi_lease; + atomic_t fi_delegees; struct inode *fi_inode; u32 fi_id; /* used with stateowner->so_id * for stateid_hashtbl hash */ |