From: "J. Bruce Fields" <bfields@xxxxxxxxxx>
For now FL_DELEG is just a synonym for FL_LEASE. So this patch doesn't
change behavior.
Next we'll modify break_lease to treat FL_DELEG leases differently, to
account for the fact that NFSv4 delegations should be broken in more
situations than Windows oplocks.
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
---
fs/locks.c | 2 +-
fs/nfsd/nfs4state.c | 2 +-
include/linux/fs.h | 1 +
3 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/locks.c b/fs/locks.c
index 669911e..6ee1943 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -131,7 +131,7 @@
#define IS_POSIX(fl) (fl->fl_flags & FL_POSIX)
#define IS_FLOCK(fl) (fl->fl_flags & FL_FLOCK)
-#define IS_LEASE(fl) (fl->fl_flags & FL_LEASE)
+#define IS_LEASE(fl) (fl->fl_flags & (FL_LEASE|FL_DELEG))
static bool lease_breaking(struct file_lock *fl)
{
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 5f1a91a..015267a 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2811,7 +2811,7 @@ static struct file_lock *nfs4_alloc_init_lease(struct nfs4_delegation *dp, int f
return NULL;
locks_init_lock(fl);
fl->fl_lmops = &nfsd_lease_mng_ops;
- fl->fl_flags = FL_LEASE;
+ fl->fl_flags = FL_DELEG;
fl->fl_type = flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK;
fl->fl_end = OFFSET_MAX;
fl->fl_owner = (fl_owner_t)(dp->dl_file);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 017070e..c43c893 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1139,6 +1139,7 @@ static inline int file_check_writeable(struct file *filp)
#define FL_POSIX 1
#define FL_FLOCK 2
+#define FL_DELEG 4 /* NFSv4 delegation */
#define FL_ACCESS 8 /* not trying to lock, just looking */
#define FL_EXISTS 16 /* when unlocking, test for existence */
#define FL_LEASE 32 /* lease held on this file */
--
1.7.9.5
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