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authorKinglong Mee <kinglongmee@gmail.com>2014-08-22 18:18:44 +0400
committerJeff Layton <jlayton@primarydata.com>2014-09-10 00:01:09 +0400
commitaef9583b234a4ecdbcaf2c3024f29d4244b18e83 (patch)
treea06c0982c3aa88126018bcd57d714da003fc59d0 /fs/nfsd
parentb5971afa0b33361667bc88f3e0eb3fc31f778dc6 (diff)
downloadlinux-aef9583b234a4ecdbcaf2c3024f29d4244b18e83.tar.xz
NFSD: Get reference of lockowner when coping file_lock
v5: using nfs4_get_stateowner() instead of an inline function v3: Update based on Jeff's comments v2: Fix bad using of struct file_lock_operations for handle the owner Acked-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4state.c25
1 files changed, 21 insertions, 4 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 2d03a4188671..a91e521622c3 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4876,9 +4876,25 @@ nfs4_transform_lock_offset(struct file_lock *lock)
lock->fl_end = OFFSET_MAX;
}
-/* Hack!: For now, we're defining this just so we can use a pointer to it
- * as a unique cookie to identify our (NFSv4's) posix locks. */
+static void nfsd4_fl_get_owner(struct file_lock *dst, struct file_lock *src)
+{
+ struct nfs4_lockowner *lo = (struct nfs4_lockowner *)src->fl_owner;
+ dst->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(&lo->lo_owner));
+}
+
+static void nfsd4_fl_put_owner(struct file_lock *fl)
+{
+ struct nfs4_lockowner *lo = (struct nfs4_lockowner *)fl->fl_owner;
+
+ if (lo) {
+ nfs4_put_stateowner(&lo->lo_owner);
+ fl->fl_owner = NULL;
+ }
+}
+
static const struct lock_manager_operations nfsd_posix_mng_ops = {
+ .lm_get_owner = nfsd4_fl_get_owner,
+ .lm_put_owner = nfsd4_fl_put_owner,
};
static inline void
@@ -5243,7 +5259,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
status = nfserr_openmode;
goto out;
}
- file_lock->fl_owner = (fl_owner_t)lock_sop;
+
+ file_lock->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(&lock_sop->lo_owner));
file_lock->fl_pid = current->tgid;
file_lock->fl_file = filp;
file_lock->fl_flags = FL_POSIX;
@@ -5439,7 +5456,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
}
file_lock->fl_type = F_UNLCK;
- file_lock->fl_owner = (fl_owner_t)lockowner(stp->st_stateowner);
+ file_lock->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(stp->st_stateowner));
file_lock->fl_pid = current->tgid;
file_lock->fl_file = filp;
file_lock->fl_flags = FL_POSIX;