Support mandatory locks (nbmand)

[zfs.git] / module / zfs / zfs_znode.c

diff --git a/module/zfs/zfs_znode.c b/module/zfs/zfs_znode.c
index 076161a..a51d5e6 100644 (file)
--- a/module/zfs/zfs_znode.c
+++ b/module/zfs/zfs_znode.c
@@ -1324,9 +1324,7 @@ top:
 int
 zfs_freesp(znode_t *zp, uint64_t off, uint64_t len, int flag, boolean_t log)
 {
-#ifdef HAVE_MANDLOCKS
        struct inode *ip = ZTOI(zp);
-#endif /* HAVE_MANDLOCKS */
        dmu_tx_t *tx;
        zfs_sb_t *zsb = ZTOZSB(zp);
        zilog_t *zilog = zsb->z_log;
@@ -1348,17 +1346,14 @@ zfs_freesp(znode_t *zp, uint64_t off, uint64_t len, int flag, boolean_t log)
                        return (error);
        }
 
-#ifdef HAVE_MANDLOCKS
        /*
         * Check for any locks in the region to be freed.
         */
-
-       if (MANDLOCK(ip, (mode_t)mode)) {
+       if (ip->i_flock && mandatory_lock(ip)) {
                uint64_t length = (len ? len : zp->z_size - off);
-               if (error = chklock(ip, FWRITE, off, length, flag, NULL))
-                       return (error);
+               if (!lock_may_write(ip, off, length))
+                       return (EAGAIN);
        }
-#endif /* HAVE_MANDLOCKS */
 
        if (len == 0) {
                error = zfs_trunc(zp, off);