*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
+ * along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
+ */
#ifndef _H_JFS_INCORE
#define _H_JFS_INCORE
uint mode2; /* jfs-specific mode */
uint saved_uid; /* saved for uid mount option */
uint saved_gid; /* saved for gid mount option */
- pxd_t ixpxd; /* inode extent descriptor */
+ pxd_t ixpxd; /* inode extent descriptor */
dxd_t acl; /* dxd describing acl */
dxd_t ea; /* dxd describing ea */
time_t otime; /* time created */
#define JFS_ACL_NOT_CACHED ((void *)-1)
-#define IREAD_LOCK(ip) down_read(&JFS_IP(ip)->rdwrlock)
+#define IREAD_LOCK(ip, subclass) \
+ down_read_nested(&JFS_IP(ip)->rdwrlock, subclass)
#define IREAD_UNLOCK(ip) up_read(&JFS_IP(ip)->rdwrlock)
-#define IWRITE_LOCK(ip) down_write(&JFS_IP(ip)->rdwrlock)
+#define IWRITE_LOCK(ip, subclass) \
+ down_write_nested(&JFS_IP(ip)->rdwrlock, subclass)
#define IWRITE_UNLOCK(ip) up_write(&JFS_IP(ip)->rdwrlock)
/*
COMMIT_Synclist, /* metadata pages on group commit synclist */
};
+/*
+ * commit_mutex nesting subclasses:
+ */
+enum commit_mutex_class
+{
+ COMMIT_MUTEX_PARENT,
+ COMMIT_MUTEX_CHILD,
+ COMMIT_MUTEX_SECOND_PARENT, /* Renaming */
+ COMMIT_MUTEX_VICTIM /* Inode being unlinked due to rename */
+};
+
+/*
+ * rdwrlock subclasses:
+ * The dmap inode may be locked while a normal inode or the imap inode are
+ * locked.
+ */
+enum rdwrlock_class
+{
+ RDWRLOCK_NORMAL,
+ RDWRLOCK_IMAP,
+ RDWRLOCK_DMAP
+};
+
#define set_cflag(flag, ip) set_bit(flag, &(JFS_IP(ip)->cflag))
#define clear_cflag(flag, ip) clear_bit(flag, &(JFS_IP(ip)->cflag))
#define test_cflag(flag, ip) test_bit(flag, &(JFS_IP(ip)->cflag))
uint gengen; /* inode generation generator*/
uint inostamp; /* shows inode belongs to fileset*/
- /* Formerly in ipbmap */
+ /* Formerly in ipbmap */
struct bmap *bmap; /* incore bmap descriptor */
struct nls_table *nls_tab; /* current codepage */
struct inode *direct_inode; /* metadata inode */