1 files changed, 106 insertions, 75 deletions

diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c
index f1a904e23ade..7bdbd991ab1c 100644
--- a/fs/xfs/xfs_vfsops.c
+++ b/fs/xfs/xfs_vfsops.c
@@ -1,74 +1,58 @@
 /*
- * XFS filesystem operations.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
  *
- * Copyright (c) 2000-2005 Silicon Graphics, Inc.  All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
+ * 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.
  *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like.  Any license provided herein, whether implied or
- * otherwise, applies only to this software file.  Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA  94043, or:
+ * This program is distributed in the hope that it would 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.
  *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
-
 #include "xfs.h"
-#include "xfs_macros.h"
+#include "xfs_fs.h"
 #include "xfs_types.h"
-#include "xfs_inum.h"
+#include "xfs_bit.h"
 #include "xfs_log.h"
+#include "xfs_inum.h"
 #include "xfs_trans.h"
 #include "xfs_sb.h"
+#include "xfs_ag.h"
 #include "xfs_dir.h"
 #include "xfs_dir2.h"
 #include "xfs_dmapi.h"
 #include "xfs_mount.h"
+#include "xfs_da_btree.h"
 #include "xfs_bmap_btree.h"
 #include "xfs_ialloc_btree.h"
 #include "xfs_alloc_btree.h"
-#include "xfs_btree.h"
-#include "xfs_alloc.h"
-#include "xfs_ialloc.h"
-#include "xfs_attr_sf.h"
 #include "xfs_dir_sf.h"
 #include "xfs_dir2_sf.h"
+#include "xfs_attr_sf.h"
 #include "xfs_dinode.h"
-#include "xfs_inode_item.h"
 #include "xfs_inode.h"
-#include "xfs_ag.h"
+#include "xfs_inode_item.h"
+#include "xfs_btree.h"
+#include "xfs_alloc.h"
+#include "xfs_ialloc.h"
+#include "xfs_quota.h"
 #include "xfs_error.h"
 #include "xfs_bmap.h"
-#include "xfs_da_btree.h"
 #include "xfs_rw.h"
 #include "xfs_refcache.h"
 #include "xfs_buf_item.h"
-#include "xfs_extfree_item.h"
-#include "xfs_quota.h"
+#include "xfs_log_priv.h"
 #include "xfs_dir2_trace.h"
+#include "xfs_extfree_item.h"
 #include "xfs_acl.h"
 #include "xfs_attr.h"
 #include "xfs_clnt.h"
-#include "xfs_log_priv.h"
 
 STATIC int xfs_sync(bhv_desc_t *, int, cred_t *);
 
@@ -230,9 +214,7 @@ xfs_start_flags(
         }
 
         if (ap->logbufs != -1 &&
-#if defined(DEBUG) || defined(XLOG_NOLOG)
             ap->logbufs != 0 &&
-#endif
             (ap->logbufs < XLOG_MIN_ICLOGS ||
              ap->logbufs > XLOG_MAX_ICLOGS)) {
                 cmn_err(CE_WARN,
@@ -242,6 +224,7 @@ xfs_start_flags(
         }
         mp->m_logbufs = ap->logbufs;
         if (ap->logbufsize != -1 &&
+            ap->logbufsize !=  0 &&
             ap->logbufsize != 16 * 1024 &&
             ap->logbufsize != 32 * 1024 &&
             ap->logbufsize != 64 * 1024 &&
@@ -257,6 +240,14 @@ xfs_start_flags(
         mp->m_fsname_len = strlen(ap->fsname) + 1;
         mp->m_fsname = kmem_alloc(mp->m_fsname_len, KM_SLEEP);
         strcpy(mp->m_fsname, ap->fsname);
+        if (ap->rtname[0]) {
+                mp->m_rtname = kmem_alloc(strlen(ap->rtname) + 1, KM_SLEEP);
+                strcpy(mp->m_rtname, ap->rtname);
+        }
+        if (ap->logname[0]) {
+                mp->m_logname = kmem_alloc(strlen(ap->logname) + 1, KM_SLEEP);
+                strcpy(mp->m_logname, ap->logname);
+        }
 
         if (ap->flags & XFSMNT_WSYNC)
                 mp->m_flags |= XFS_MOUNT_WSYNC;
@@ -268,21 +259,16 @@ xfs_start_flags(
 #endif
         if (ap->flags & XFSMNT_NOATIME)
                 mp->m_flags |= XFS_MOUNT_NOATIME;
-
         if (ap->flags & XFSMNT_RETERR)
                 mp->m_flags |= XFS_MOUNT_RETERR;
-
         if (ap->flags & XFSMNT_NOALIGN)
                 mp->m_flags |= XFS_MOUNT_NOALIGN;
-
         if (ap->flags & XFSMNT_SWALLOC)
                 mp->m_flags |= XFS_MOUNT_SWALLOC;
-
         if (ap->flags & XFSMNT_OSYNCISOSYNC)
                 mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC;
-
         if (ap->flags & XFSMNT_32BITINODES)
-                mp->m_flags |= (XFS_MOUNT_32BITINODES | XFS_MOUNT_32BITINOOPT);
+                mp->m_flags |= XFS_MOUNT_32BITINODES;
 
         if (ap->flags & XFSMNT_IOSIZE) {
                 if (ap->iosizelog > XFS_MAX_IO_LOG ||
@@ -300,12 +286,15 @@ xfs_start_flags(
 
         if (ap->flags & XFSMNT_IHASHSIZE)
                 mp->m_flags |= XFS_MOUNT_IHASHSIZE;
-
         if (ap->flags & XFSMNT_IDELETE)
                 mp->m_flags |= XFS_MOUNT_IDELETE;
-
         if (ap->flags & XFSMNT_DIRSYNC)
                 mp->m_flags |= XFS_MOUNT_DIRSYNC;
+        if (ap->flags & XFSMNT_COMPAT_ATTR)
+                mp->m_flags |= XFS_MOUNT_COMPAT_ATTR;
+
+        if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE)
+                mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
 
         /*
          * no recovery flag requires a read-only mount
@@ -321,8 +310,8 @@ xfs_start_flags(
 
         if (ap->flags & XFSMNT_NOUUID)
                 mp->m_flags |= XFS_MOUNT_NOUUID;
-        if (ap->flags & XFSMNT_NOLOGFLUSH)
-                mp->m_flags |= XFS_MOUNT_NOLOGFLUSH;
+        if (ap->flags & XFSMNT_BARRIER)
+                mp->m_flags |= XFS_MOUNT_BARRIER;
 
         return 0;
 }
@@ -393,6 +382,10 @@ xfs_finish_flags(
                         return XFS_ERROR(EINVAL);
         }
 
+        if (XFS_SB_VERSION_HASATTR2(&mp->m_sb)) {
+                mp->m_flags &= ~XFS_MOUNT_COMPAT_ATTR;
+        }
+
         return 0;
 }
 
@@ -512,8 +505,14 @@ xfs_mount(
                 goto error2;
 
         error = XFS_IOINIT(vfsp, args, flags);
-        if (!error)
-                return 0;
+        if (error)
+                goto error2;
+
+        if ((args->flags & XFSMNT_BARRIER) &&
+            !(XFS_MTOVFS(mp)->vfs_flag & VFS_RDONLY))
+                xfs_mountfs_check_barriers(mp);
+        return 0;
+
 error2:
         if (mp->m_sb_bp)
                 xfs_freesb(mp);
@@ -656,19 +655,24 @@ xfs_mntupdate(
         else
                 mp->m_flags &= ~XFS_MOUNT_NOATIME;
 
-        if (!(vfsp->vfs_flag & VFS_RDONLY)) {
-                VFS_SYNC(vfsp, SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR, NULL, error);
+        if ((vfsp->vfs_flag & VFS_RDONLY) &&
+            !(*flags & MS_RDONLY)) {
+                vfsp->vfs_flag &= ~VFS_RDONLY;
+
+                if (args->flags & XFSMNT_BARRIER)
+                        xfs_mountfs_check_barriers(mp);
         }
 
-        if (*flags & MS_RDONLY) {
+        if (!(vfsp->vfs_flag & VFS_RDONLY) &&
+            (*flags & MS_RDONLY)) {
+                VFS_SYNC(vfsp, SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR, NULL, error);
+
                 xfs_quiesce_fs(mp);
 
                 /* Ok now write out an unmount record */
                 xfs_log_unmount_write(mp);
                 xfs_unmountfs_writesb(mp);
                 vfsp->vfs_flag |= VFS_RDONLY;
-        } else {
-                vfsp->vfs_flag &= ~VFS_RDONLY;
         }
 
         return 0;
@@ -892,7 +896,7 @@ xfs_sync(
  * only available by calling this routine.
  *
  */
-STATIC int
+int
 xfs_sync_inodes(
         xfs_mount_t     *mp,
         int             flags,
@@ -976,7 +980,7 @@ xfs_sync_inodes(
         ipointer = (xfs_iptr_t *)kmem_zalloc(sizeof(xfs_iptr_t), KM_SLEEP);
 
         fflag = XFS_B_ASYNC;            /* default is don't wait */
-        if (flags & SYNC_BDFLUSH)
+        if (flags & (SYNC_BDFLUSH | SYNC_DELWRI))
                 fflag = XFS_B_DELWRI;
         if (flags & SYNC_WAIT)
                 fflag = 0;              /* synchronous overrides all */
@@ -1628,11 +1632,17 @@ xfs_vget(
 #define MNTOPT_ALLOCSIZE    "allocsize"    /* preferred allocation size */
 #define MNTOPT_IHASHSIZE    "ihashsize"    /* size of inode hash table */
 #define MNTOPT_NORECOVERY   "norecovery"   /* don't run XFS recovery */
-#define MNTOPT_NOLOGFLUSH   "nologflush"   /* don't hard flush on log writes */
+#define MNTOPT_BARRIER  "barrier"       /* use writer barriers for log write and
+                                         * unwritten extent conversion */
 #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
 #define MNTOPT_64BITINODE   "inode64"   /* inodes can be allocated anywhere */
 #define MNTOPT_IKEEP    "ikeep"         /* do not free empty inode clusters */
 #define MNTOPT_NOIKEEP  "noikeep"       /* free empty inode clusters */
+#define MNTOPT_LARGEIO     "largeio"    /* report large I/O sizes in stat() */
+#define MNTOPT_NOLARGEIO   "nolargeio"  /* do not report large I/O sizes
+                                         * in stat(). */
+#define MNTOPT_ATTR2    "attr2"         /* do use attr2 attribute format */
+#define MNTOPT_NOATTR2  "noattr2"       /* do not use attr2 attribute format */
 
 STATIC unsigned long
 suffix_strtoul(const char *cp, char **endp, unsigned int base)
@@ -1669,12 +1679,15 @@ xfs_parseargs(
         int                     dsunit, dswidth, vol_dsunit, vol_dswidth;
         int                     iosize;
 
+        args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
+        args->flags |= XFSMNT_COMPAT_ATTR;
+
 #if 0   /* XXX: off by default, until some remaining issues ironed out */
         args->flags |= XFSMNT_IDELETE; /* default to on */
 #endif
 
         if (!options)
-                return 0;
+                goto done;
 
         iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0;
 
@@ -1791,12 +1804,20 @@ xfs_parseargs(
 #endif
                 } else if (!strcmp(this_char, MNTOPT_NOUUID)) {
                         args->flags |= XFSMNT_NOUUID;
-                } else if (!strcmp(this_char, MNTOPT_NOLOGFLUSH)) {
-                        args->flags |= XFSMNT_NOLOGFLUSH;
+                } else if (!strcmp(this_char, MNTOPT_BARRIER)) {
+                        args->flags |= XFSMNT_BARRIER;
                 } else if (!strcmp(this_char, MNTOPT_IKEEP)) {
                         args->flags &= ~XFSMNT_IDELETE;
                 } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) {
                         args->flags |= XFSMNT_IDELETE;
+                } else if (!strcmp(this_char, MNTOPT_LARGEIO)) {
+                        args->flags2 &= ~XFSMNT2_COMPAT_IOSIZE;
+                } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) {
+                        args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
+                } else if (!strcmp(this_char, MNTOPT_ATTR2)) {
+                        args->flags &= ~XFSMNT_COMPAT_ATTR;
+                } else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
+                        args->flags |= XFSMNT_COMPAT_ATTR;
                 } else if (!strcmp(this_char, "osyncisdsync")) {
                         /* no-op, this is now the default */
 printk("XFS: osyncisdsync is now the default, option is deprecated.\n");
@@ -1846,6 +1867,11 @@ printk("XFS: irixsgid is now a sysctl(2) variable, option is deprecated.\n");
                 args->sunit = args->swidth = 0;
         }
 
+done:
+        if (args->flags & XFSMNT_32BITINODES)
+                vfsp->vfs_flag |= VFS_32BITINODES;
+        if (args->flags2)
+                args->flags |= XFSMNT_FLAGS2;
         return 0;
 }
 
@@ -1866,7 +1892,7 @@ xfs_showargs(
                 { XFS_MOUNT_NOUUID,             "," MNTOPT_NOUUID },
                 { XFS_MOUNT_NORECOVERY,         "," MNTOPT_NORECOVERY },
                 { XFS_MOUNT_OSYNCISOSYNC,       "," MNTOPT_OSYNCISOSYNC },
-                { XFS_MOUNT_NOLOGFLUSH,         "," MNTOPT_NOLOGFLUSH },
+                { XFS_MOUNT_BARRIER,            "," MNTOPT_BARRIER },
                 { XFS_MOUNT_IDELETE,            "," MNTOPT_NOIKEEP },
                 { 0, NULL }
         };
@@ -1883,21 +1909,20 @@ xfs_showargs(
                 seq_printf(m, "," MNTOPT_IHASHSIZE "=%d", mp->m_ihsize);
 
         if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)
-                seq_printf(m, "," MNTOPT_ALLOCSIZE "=%d", 1<<mp->m_writeio_log);
+                seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk",
+                                (int)(1 << mp->m_writeio_log) >> 10);
 
         if (mp->m_logbufs > 0)
                 seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs);
 
         if (mp->m_logbsize > 0)
-                seq_printf(m, "," MNTOPT_LOGBSIZE "=%d", mp->m_logbsize);
+                seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10);
 
-        if (mp->m_ddev_targp != mp->m_logdev_targp)
-                seq_printf(m, "," MNTOPT_LOGDEV "=%s",
-                                XFS_BUFTARG_NAME(mp->m_logdev_targp));
+        if (mp->m_logname)
+                seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname);
 
-        if (mp->m_rtdev_targp && mp->m_ddev_targp != mp->m_rtdev_targp)
-                seq_printf(m, "," MNTOPT_RTDEV "=%s",
-                                XFS_BUFTARG_NAME(mp->m_rtdev_targp));
+        if (mp->m_rtname)
+                seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname);
 
         if (mp->m_dalign > 0)
                 seq_printf(m, "," MNTOPT_SUNIT "=%d",
@@ -1907,7 +1932,13 @@ xfs_showargs(
                 seq_printf(m, "," MNTOPT_SWIDTH "=%d",
                                 (int)XFS_FSB_TO_BB(mp, mp->m_swidth));
 
-        if (!(mp->m_flags & XFS_MOUNT_32BITINOOPT))
+        if (!(mp->m_flags & XFS_MOUNT_COMPAT_ATTR))
+                seq_printf(m, "," MNTOPT_ATTR2);
+
+        if (!(mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE))
+                seq_printf(m, "," MNTOPT_LARGEIO);
+
+        if (!(vfsp->vfs_flag & VFS_32BITINODES))
                 seq_printf(m, "," MNTOPT_64BITINODE);
 
         if (vfsp->vfs_flag & VFS_GRPID)