]> www.pilppa.org Git - linux-2.6-omap-h63xx.git/blobdiff - fs/xfs/xfs_vfsops.c
[XFS] streamline init/exit path
[linux-2.6-omap-h63xx.git] / fs / xfs / xfs_vfsops.c
index 7321304a69ccc129452c674dc298cdef25d5480a..4a9a43315a8662262906292d0d3c21293644d015 100644 (file)
@@ -43,7 +43,6 @@
 #include "xfs_error.h"
 #include "xfs_bmap.h"
 #include "xfs_rw.h"
-#include "xfs_refcache.h"
 #include "xfs_buf_item.h"
 #include "xfs_log_priv.h"
 #include "xfs_dir2_trace.h"
 #include "xfs_fsops.h"
 #include "xfs_vnodeops.h"
 #include "xfs_vfsops.h"
+#include "xfs_utils.h"
 
 
-int __init
-xfs_init(void)
-{
-#ifdef XFS_DABUF_DEBUG
-       extern spinlock_t        xfs_dabuf_global_lock;
-       spin_lock_init(&xfs_dabuf_global_lock);
-#endif
-
-       /*
-        * Initialize all of the zone allocators we use.
-        */
-       xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t),
-                                                "xfs_bmap_free_item");
-       xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t),
-                                           "xfs_btree_cur");
-       xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans");
-       xfs_da_state_zone =
-               kmem_zone_init(sizeof(xfs_da_state_t), "xfs_da_state");
-       xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf");
-       xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork");
-       xfs_acl_zone_init(xfs_acl_zone, "xfs_acl");
-       xfs_mru_cache_init();
-       xfs_filestream_init();
-
-       /*
-        * The size of the zone allocated buf log item is the maximum
-        * size possible under XFS.  This wastes a little bit of memory,
-        * but it is much faster.
-        */
-       xfs_buf_item_zone =
-               kmem_zone_init((sizeof(xfs_buf_log_item_t) +
-                               (((XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK) /
-                                 NBWORD) * sizeof(int))),
-                              "xfs_buf_item");
-       xfs_efd_zone =
-               kmem_zone_init((sizeof(xfs_efd_log_item_t) +
-                              ((XFS_EFD_MAX_FAST_EXTENTS - 1) *
-                                sizeof(xfs_extent_t))),
-                                     "xfs_efd_item");
-       xfs_efi_zone =
-               kmem_zone_init((sizeof(xfs_efi_log_item_t) +
-                              ((XFS_EFI_MAX_FAST_EXTENTS - 1) *
-                                sizeof(xfs_extent_t))),
-                                     "xfs_efi_item");
-
-       /*
-        * These zones warrant special memory allocator hints
-        */
-       xfs_inode_zone =
-               kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode",
-                                       KM_ZONE_HWALIGN | KM_ZONE_RECLAIM |
-                                       KM_ZONE_SPREAD, NULL);
-       xfs_ili_zone =
-               kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili",
-                                       KM_ZONE_SPREAD, NULL);
-       xfs_icluster_zone =
-               kmem_zone_init_flags(sizeof(xfs_icluster_t), "xfs_icluster",
-                                       KM_ZONE_SPREAD, NULL);
-
-       /*
-        * Allocate global trace buffers.
-        */
-#ifdef XFS_ALLOC_TRACE
-       xfs_alloc_trace_buf = ktrace_alloc(XFS_ALLOC_TRACE_SIZE, KM_SLEEP);
-#endif
-#ifdef XFS_BMAP_TRACE
-       xfs_bmap_trace_buf = ktrace_alloc(XFS_BMAP_TRACE_SIZE, KM_SLEEP);
-#endif
-#ifdef XFS_BMBT_TRACE
-       xfs_bmbt_trace_buf = ktrace_alloc(XFS_BMBT_TRACE_SIZE, KM_SLEEP);
-#endif
-#ifdef XFS_ATTR_TRACE
-       xfs_attr_trace_buf = ktrace_alloc(XFS_ATTR_TRACE_SIZE, KM_SLEEP);
-#endif
-#ifdef XFS_DIR2_TRACE
-       xfs_dir2_trace_buf = ktrace_alloc(XFS_DIR2_GTRACE_SIZE, KM_SLEEP);
-#endif
-
-       xfs_dir_startup();
-
-#if (defined(DEBUG) || defined(INDUCE_IO_ERROR))
-       xfs_error_test_init();
-#endif /* DEBUG || INDUCE_IO_ERROR */
-
-       xfs_init_procfs();
-       xfs_sysctl_register();
-       return 0;
-}
-
-void __exit
-xfs_cleanup(void)
-{
-       extern kmem_zone_t      *xfs_inode_zone;
-       extern kmem_zone_t      *xfs_efd_zone;
-       extern kmem_zone_t      *xfs_efi_zone;
-       extern kmem_zone_t      *xfs_icluster_zone;
-
-       xfs_cleanup_procfs();
-       xfs_sysctl_unregister();
-       xfs_refcache_destroy();
-       xfs_filestream_uninit();
-       xfs_mru_cache_uninit();
-       xfs_acl_zone_destroy(xfs_acl_zone);
-
-#ifdef XFS_DIR2_TRACE
-       ktrace_free(xfs_dir2_trace_buf);
-#endif
-#ifdef XFS_ATTR_TRACE
-       ktrace_free(xfs_attr_trace_buf);
-#endif
-#ifdef XFS_BMBT_TRACE
-       ktrace_free(xfs_bmbt_trace_buf);
-#endif
-#ifdef XFS_BMAP_TRACE
-       ktrace_free(xfs_bmap_trace_buf);
-#endif
-#ifdef XFS_ALLOC_TRACE
-       ktrace_free(xfs_alloc_trace_buf);
-#endif
-
-       kmem_zone_destroy(xfs_bmap_free_item_zone);
-       kmem_zone_destroy(xfs_btree_cur_zone);
-       kmem_zone_destroy(xfs_inode_zone);
-       kmem_zone_destroy(xfs_trans_zone);
-       kmem_zone_destroy(xfs_da_state_zone);
-       kmem_zone_destroy(xfs_dabuf_zone);
-       kmem_zone_destroy(xfs_buf_item_zone);
-       kmem_zone_destroy(xfs_efd_zone);
-       kmem_zone_destroy(xfs_efi_zone);
-       kmem_zone_destroy(xfs_ifork_zone);
-       kmem_zone_destroy(xfs_ili_zone);
-       kmem_zone_destroy(xfs_icluster_zone);
-}
-
-/*
- * xfs_start_flags
- *
- * This function fills in xfs_mount_t fields based on mount args.
- * Note: the superblock has _not_ yet been read in.
- */
-STATIC int
-xfs_start_flags(
-       struct xfs_mount_args   *ap,
-       struct xfs_mount        *mp)
-{
-       /* Values are in BBs */
-       if ((ap->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
-               /*
-                * At this point the superblock has not been read
-                * in, therefore we do not know the block size.
-                * Before the mount call ends we will convert
-                * these to FSBs.
-                */
-               mp->m_dalign = ap->sunit;
-               mp->m_swidth = ap->swidth;
-       }
-
-       if (ap->logbufs != -1 &&
-           ap->logbufs != 0 &&
-           (ap->logbufs < XLOG_MIN_ICLOGS ||
-            ap->logbufs > XLOG_MAX_ICLOGS)) {
-               cmn_err(CE_WARN,
-                       "XFS: invalid logbufs value: %d [not %d-%d]",
-                       ap->logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
-               return XFS_ERROR(EINVAL);
-       }
-       mp->m_logbufs = ap->logbufs;
-       if (ap->logbufsize != -1 &&
-           ap->logbufsize !=  0 &&
-           (ap->logbufsize < XLOG_MIN_RECORD_BSIZE ||
-            ap->logbufsize > XLOG_MAX_RECORD_BSIZE ||
-            !is_power_of_2(ap->logbufsize))) {
-               cmn_err(CE_WARN,
-       "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
-                       ap->logbufsize);
-               return XFS_ERROR(EINVAL);
-       }
-       mp->m_logbsize = ap->logbufsize;
-       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;
-#if XFS_BIG_INUMS
-       if (ap->flags & XFSMNT_INO64) {
-               mp->m_flags |= XFS_MOUNT_INO64;
-               mp->m_inoadd = XFS_INO64_OFFSET;
-       }
-#endif
-       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;
-
-       if (ap->flags & XFSMNT_IOSIZE) {
-               if (ap->iosizelog > XFS_MAX_IO_LOG ||
-                   ap->iosizelog < XFS_MIN_IO_LOG) {
-                       cmn_err(CE_WARN,
-               "XFS: invalid log iosize: %d [not %d-%d]",
-                               ap->iosizelog, XFS_MIN_IO_LOG,
-                               XFS_MAX_IO_LOG);
-                       return XFS_ERROR(EINVAL);
-               }
-
-               mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE;
-               mp->m_readio_log = mp->m_writeio_log = ap->iosizelog;
-       }
-
-       if (ap->flags & XFSMNT_IKEEP)
-               mp->m_flags |= XFS_MOUNT_IKEEP;
-       if (ap->flags & XFSMNT_DIRSYNC)
-               mp->m_flags |= XFS_MOUNT_DIRSYNC;
-       if (ap->flags & XFSMNT_ATTR2)
-               mp->m_flags |= XFS_MOUNT_ATTR2;
-
-       if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE)
-               mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
-
-       /*
-        * no recovery flag requires a read-only mount
-        */
-       if (ap->flags & XFSMNT_NORECOVERY) {
-               if (!(mp->m_flags & XFS_MOUNT_RDONLY)) {
-                       cmn_err(CE_WARN,
-       "XFS: tried to mount a FS read-write without recovery!");
-                       return XFS_ERROR(EINVAL);
-               }
-               mp->m_flags |= XFS_MOUNT_NORECOVERY;
-       }
-
-       if (ap->flags & XFSMNT_NOUUID)
-               mp->m_flags |= XFS_MOUNT_NOUUID;
-       if (ap->flags & XFSMNT_BARRIER)
-               mp->m_flags |= XFS_MOUNT_BARRIER;
-       else
-               mp->m_flags &= ~XFS_MOUNT_BARRIER;
-
-       if (ap->flags2 & XFSMNT2_FILESTREAMS)
-               mp->m_flags |= XFS_MOUNT_FILESTREAMS;
-
-       if (ap->flags & XFSMNT_DMAPI)
-               mp->m_flags |= XFS_MOUNT_DMAPI;
-       return 0;
-}
-
-/*
- * This function fills in xfs_mount_t fields based on mount args.
- * Note: the superblock _has_ now been read in.
- */
-STATIC int
-xfs_finish_flags(
-       struct xfs_mount_args   *ap,
-       struct xfs_mount        *mp)
-{
-       int                     ronly = (mp->m_flags & XFS_MOUNT_RDONLY);
-
-       /* Fail a mount where the logbuf is smaller then the log stripe */
-       if (XFS_SB_VERSION_HASLOGV2(&mp->m_sb)) {
-               if ((ap->logbufsize <= 0) &&
-                   (mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE)) {
-                       mp->m_logbsize = mp->m_sb.sb_logsunit;
-               } else if (ap->logbufsize > 0 &&
-                          ap->logbufsize < mp->m_sb.sb_logsunit) {
-                       cmn_err(CE_WARN,
-       "XFS: logbuf size must be greater than or equal to log stripe size");
-                       return XFS_ERROR(EINVAL);
-               }
-       } else {
-               /* Fail a mount if the logbuf is larger than 32K */
-               if (ap->logbufsize > XLOG_BIG_RECORD_BSIZE) {
-                       cmn_err(CE_WARN,
-       "XFS: logbuf size for version 1 logs must be 16K or 32K");
-                       return XFS_ERROR(EINVAL);
-               }
-       }
-
-       if (XFS_SB_VERSION_HASATTR2(&mp->m_sb)) {
-               mp->m_flags |= XFS_MOUNT_ATTR2;
-       }
-
-       /*
-        * prohibit r/w mounts of read-only filesystems
-        */
-       if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
-               cmn_err(CE_WARN,
-       "XFS: cannot mount a read-only filesystem as read-write");
-               return XFS_ERROR(EROFS);
-       }
-
-       /*
-        * check for shared mount.
-        */
-       if (ap->flags & XFSMNT_SHARED) {
-               if (!XFS_SB_VERSION_HASSHARED(&mp->m_sb))
-                       return XFS_ERROR(EINVAL);
-
-               /*
-                * For IRIX 6.5, shared mounts must have the shared
-                * version bit set, have the persistent readonly
-                * field set, must be version 0 and can only be mounted
-                * read-only.
-                */
-               if (!ronly || !(mp->m_sb.sb_flags & XFS_SBF_READONLY) ||
-                    (mp->m_sb.sb_shared_vn != 0))
-                       return XFS_ERROR(EINVAL);
-
-               mp->m_flags |= XFS_MOUNT_SHARED;
-
-               /*
-                * Shared XFS V0 can't deal with DMI.  Return EINVAL.
-                */
-               if (mp->m_sb.sb_shared_vn == 0 && (ap->flags & XFSMNT_DMAPI))
-                       return XFS_ERROR(EINVAL);
-       }
-
-       if (ap->flags & XFSMNT_UQUOTA) {
-               mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
-               if (ap->flags & XFSMNT_UQUOTAENF)
-                       mp->m_qflags |= XFS_UQUOTA_ENFD;
-       }
-
-       if (ap->flags & XFSMNT_GQUOTA) {
-               mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
-               if (ap->flags & XFSMNT_GQUOTAENF)
-                       mp->m_qflags |= XFS_OQUOTA_ENFD;
-       } else if (ap->flags & XFSMNT_PQUOTA) {
-               mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
-               if (ap->flags & XFSMNT_PQUOTAENF)
-                       mp->m_qflags |= XFS_OQUOTA_ENFD;
-       }
-
-       return 0;
-}
-
-/*
- * xfs_mount
- *
- * The file system configurations are:
- *     (1) device (partition) with data and internal log
- *     (2) logical volume with data and log subvolumes.
- *     (3) logical volume with data, log, and realtime subvolumes.
- *
- * We only have to handle opening the log and realtime volumes here if
- * they are present.  The data subvolume has already been opened by
- * get_sb_bdev() and is stored in vfsp->vfs_super->s_bdev.
- */
-int
-xfs_mount(
-       struct xfs_mount        *mp,
-       struct xfs_mount_args   *args,
-       cred_t                  *credp)
-{
-       struct block_device     *ddev, *logdev, *rtdev;
-       int                     flags = 0, error;
-
-       ddev = mp->m_super->s_bdev;
-       logdev = rtdev = NULL;
-
-       error = xfs_dmops_get(mp, args);
-       if (error)
-               return error;
-       error = xfs_qmops_get(mp, args);
-       if (error)
-               return error;
-
-       if (args->flags & XFSMNT_QUIET)
-               flags |= XFS_MFSI_QUIET;
-
-       /*
-        * Open real time and log devices - order is important.
-        */
-       if (args->logname[0]) {
-               error = xfs_blkdev_get(mp, args->logname, &logdev);
-               if (error)
-                       return error;
-       }
-       if (args->rtname[0]) {
-               error = xfs_blkdev_get(mp, args->rtname, &rtdev);
-               if (error) {
-                       xfs_blkdev_put(logdev);
-                       return error;
-               }
-
-               if (rtdev == ddev || rtdev == logdev) {
-                       cmn_err(CE_WARN,
-       "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev.");
-                       xfs_blkdev_put(logdev);
-                       xfs_blkdev_put(rtdev);
-                       return EINVAL;
-               }
-       }
-
-       /*
-        * Setup xfs_mount buffer target pointers
-        */
-       error = ENOMEM;
-       mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0);
-       if (!mp->m_ddev_targp) {
-               xfs_blkdev_put(logdev);
-               xfs_blkdev_put(rtdev);
-               return error;
-       }
-       if (rtdev) {
-               mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1);
-               if (!mp->m_rtdev_targp) {
-                       xfs_blkdev_put(logdev);
-                       xfs_blkdev_put(rtdev);
-                       goto error0;
-               }
-       }
-       mp->m_logdev_targp = (logdev && logdev != ddev) ?
-                               xfs_alloc_buftarg(logdev, 1) : mp->m_ddev_targp;
-       if (!mp->m_logdev_targp) {
-               xfs_blkdev_put(logdev);
-               xfs_blkdev_put(rtdev);
-               goto error0;
-       }
-
-       /*
-        * Setup flags based on mount(2) options and then the superblock
-        */
-       error = xfs_start_flags(args, mp);
-       if (error)
-               goto error1;
-       error = xfs_readsb(mp, flags);
-       if (error)
-               goto error1;
-       error = xfs_finish_flags(args, mp);
-       if (error)
-               goto error2;
-
-       /*
-        * Setup xfs_mount buffer target pointers based on superblock
-        */
-       error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize,
-                                   mp->m_sb.sb_sectsize);
-       if (!error && logdev && logdev != ddev) {
-               unsigned int    log_sector_size = BBSIZE;
-
-               if (XFS_SB_VERSION_HASSECTOR(&mp->m_sb))
-                       log_sector_size = mp->m_sb.sb_logsectsize;
-               error = xfs_setsize_buftarg(mp->m_logdev_targp,
-                                           mp->m_sb.sb_blocksize,
-                                           log_sector_size);
-       }
-       if (!error && rtdev)
-               error = xfs_setsize_buftarg(mp->m_rtdev_targp,
-                                           mp->m_sb.sb_blocksize,
-                                           mp->m_sb.sb_sectsize);
-       if (error)
-               goto error2;
-
-       if (mp->m_flags & XFS_MOUNT_BARRIER)
-               xfs_mountfs_check_barriers(mp);
-
-       if ((error = xfs_filestream_mount(mp)))
-               goto error2;
-
-       error = xfs_mountfs(mp, flags);
-       if (error)
-               goto error2;
-
-       XFS_SEND_MOUNT(mp, DM_RIGHT_NULL, args->mtpt, args->fsname);
-
-       return 0;
-
-error2:
-       if (mp->m_sb_bp)
-               xfs_freesb(mp);
-error1:
-       xfs_binval(mp->m_ddev_targp);
-       if (logdev && logdev != ddev)
-               xfs_binval(mp->m_logdev_targp);
-       if (rtdev)
-               xfs_binval(mp->m_rtdev_targp);
-error0:
-       xfs_unmountfs_close(mp, credp);
-       xfs_qmops_put(mp);
-       xfs_dmops_put(mp);
-       return error;
-}
-
-int
-xfs_unmount(
-       xfs_mount_t     *mp,
-       int             flags,
-       cred_t          *credp)
-{
-       xfs_inode_t     *rip;
-       bhv_vnode_t     *rvp;
-       int             unmount_event_wanted = 0;
-       int             unmount_event_flags = 0;
-       int             xfs_unmountfs_needed = 0;
-       int             error;
-
-       rip = mp->m_rootip;
-       rvp = XFS_ITOV(rip);
-
-#ifdef HAVE_DMAPI
-       if (mp->m_flags & XFS_MOUNT_DMAPI) {
-               error = XFS_SEND_PREUNMOUNT(mp,
-                               rvp, DM_RIGHT_NULL, rvp, DM_RIGHT_NULL,
-                               NULL, NULL, 0, 0,
-                               (mp->m_dmevmask & (1<<DM_EVENT_PREUNMOUNT))?
-                                       0:DM_FLAGS_UNWANTED);
-                       if (error)
-                               return XFS_ERROR(error);
-               unmount_event_wanted = 1;
-               unmount_event_flags = (mp->m_dmevmask & (1<<DM_EVENT_UNMOUNT))?
-                                       0 : DM_FLAGS_UNWANTED;
-       }
-#endif
-       /*
-        * First blow any referenced inode from this file system
-        * out of the reference cache, and delete the timer.
-        */
-       xfs_refcache_purge_mp(mp);
-
-       /*
-        * Blow away any referenced inode in the filestreams cache.
-        * This can and will cause log traffic as inodes go inactive
-        * here.
-        */
-       xfs_filestream_unmount(mp);
-
-       XFS_bflush(mp->m_ddev_targp);
-       error = xfs_unmount_flush(mp, 0);
-       if (error)
-               goto out;
-
-       ASSERT(vn_count(rvp) == 1);
-
-       /*
-        * Drop the reference count
-        */
-       VN_RELE(rvp);
-
-       /*
-        * If we're forcing a shutdown, typically because of a media error,
-        * we want to make sure we invalidate dirty pages that belong to
-        * referenced vnodes as well.
-        */
-       if (XFS_FORCED_SHUTDOWN(mp)) {
-               error = xfs_sync(mp, SYNC_WAIT | SYNC_CLOSE);
-               ASSERT(error != EFSCORRUPTED);
-       }
-       xfs_unmountfs_needed = 1;
-
-out:
-       /*      Send DMAPI event, if required.
-        *      Then do xfs_unmountfs() if needed.
-        *      Then return error (or zero).
-        */
-       if (unmount_event_wanted) {
-               /* Note: mp structure must still exist for
-                * XFS_SEND_UNMOUNT() call.
-                */
-               XFS_SEND_UNMOUNT(mp, error == 0 ? rvp : NULL,
-                       DM_RIGHT_NULL, 0, error, unmount_event_flags);
-       }
-       if (xfs_unmountfs_needed) {
-               /*
-                * Call common unmount function to flush to disk
-                * and free the super block buffer & mount structures.
-                */
-               xfs_unmountfs(mp, credp);
-               xfs_qmops_put(mp);
-               xfs_dmops_put(mp);
-               kmem_free(mp, sizeof(xfs_mount_t));
-       }
-
-       return XFS_ERROR(error);
-}
-
-STATIC int
+STATIC void
 xfs_quiesce_fs(
        xfs_mount_t             *mp)
 {
        int                     count = 0, pincount;
 
-       xfs_refcache_purge_mp(mp);
        xfs_flush_buftarg(mp->m_ddev_targp, 0);
        xfs_finish_reclaim_all(mp, 0);
 
@@ -672,8 +82,6 @@ xfs_quiesce_fs(
                        count++;
                }
        } while (count < 2);
-
-       return 0;
 }
 
 /*
@@ -685,6 +93,8 @@ void
 xfs_attr_quiesce(
        xfs_mount_t     *mp)
 {
+       int     error = 0;
+
        /* wait for all modifications to complete */
        while (atomic_read(&mp->m_active_trans) > 0)
                delay(100);
@@ -695,35 +105,15 @@ xfs_attr_quiesce(
        ASSERT_ALWAYS(atomic_read(&mp->m_active_trans) == 0);
 
        /* Push the superblock and write an unmount record */
-       xfs_log_sbcount(mp, 1);
+       error = xfs_log_sbcount(mp, 1);
+       if (error)
+               xfs_fs_cmn_err(CE_WARN, mp,
+                               "xfs_attr_quiesce: failed to log sb changes. "
+                               "Frozen image may not be consistent.");
        xfs_log_unmount_write(mp);
        xfs_unmountfs_writesb(mp);
 }
 
-int
-xfs_mntupdate(
-       struct xfs_mount                *mp,
-       int                             *flags,
-       struct xfs_mount_args           *args)
-{
-       if (!(*flags & MS_RDONLY)) {                    /* rw/ro -> rw */
-               if (mp->m_flags & XFS_MOUNT_RDONLY)
-                       mp->m_flags &= ~XFS_MOUNT_RDONLY;
-               if (args->flags & XFSMNT_BARRIER) {
-                       mp->m_flags |= XFS_MOUNT_BARRIER;
-                       xfs_mountfs_check_barriers(mp);
-               } else {
-                       mp->m_flags &= ~XFS_MOUNT_BARRIER;
-               }
-       } else if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { /* rw -> ro */
-               xfs_filestream_flush(mp);
-               xfs_sync(mp, SYNC_DATA_QUIESCE);
-               xfs_attr_quiesce(mp);
-               mp->m_flags |= XFS_MOUNT_RDONLY;
-       }
-       return 0;
-}
-
 /*
  * xfs_unmount_flush implements a set of flush operation on special
  * inodes, which are needed as a separate set of operations so that
@@ -791,8 +181,8 @@ xfs_unmount_flush(
                goto fscorrupt_out2;
 
        if (rbmip) {
-               VN_RELE(XFS_ITOV(rbmip));
-               VN_RELE(XFS_ITOV(rsumip));
+               IRELE(rbmip);
+               IRELE(rsumip);
        }
 
        xfs_iunlock(rip, XFS_ILOCK_EXCL);
@@ -1054,7 +444,7 @@ xfs_sync_inodes(
 
                if (XFS_FORCED_SHUTDOWN(mp) && !(flags & SYNC_CLOSE)) {
                        XFS_MOUNT_IUNLOCK(mp);
-                       kmem_free(ipointer, sizeof(xfs_iptr_t));
+                       kmem_free(ipointer);
                        return 0;
                }
 
@@ -1170,10 +560,10 @@ xfs_sync_inodes(
                         * above, then wait until after we've unlocked
                         * the inode to release the reference.  This is
                         * because we can be already holding the inode
-                        * lock when VN_RELE() calls xfs_inactive().
+                        * lock when IRELE() calls xfs_inactive().
                         *
                         * Make sure to drop the mount lock before calling
-                        * VN_RELE() so that we don't trip over ourselves if
+                        * IRELE() so that we don't trip over ourselves if
                         * we have to go for the mount lock again in the
                         * inactive code.
                         */
@@ -1181,7 +571,7 @@ xfs_sync_inodes(
                                IPOINTER_INSERT(ip, mp);
                        }
 
-                       VN_RELE(vp);
+                       IRELE(ip);
 
                        vnode_refed = B_FALSE;
                }
@@ -1200,7 +590,7 @@ xfs_sync_inodes(
                        }
                        XFS_MOUNT_IUNLOCK(mp);
                        ASSERT(ipointer_in == B_FALSE);
-                       kmem_free(ipointer, sizeof(xfs_iptr_t));
+                       kmem_free(ipointer);
                        return XFS_ERROR(error);
                }
 
@@ -1230,7 +620,7 @@ xfs_sync_inodes(
 
        ASSERT(ipointer_in == B_FALSE);
 
-       kmem_free(ipointer, sizeof(xfs_iptr_t));
+       kmem_free(ipointer);
        return XFS_ERROR(last_error);
 }
 
@@ -1323,31 +713,9 @@ xfs_syncsub(
                }
        }
 
-       /*
-        * If this is the periodic sync, then kick some entries out of
-        * the reference cache.  This ensures that idle entries are
-        * eventually kicked out of the cache.
-        */
-       if (flags & SYNC_REFCACHE) {
-               if (flags & SYNC_WAIT)
-                       xfs_refcache_purge_mp(mp);
-               else
-                       xfs_refcache_purge_some(mp);
-       }
-
-       /*
-        * If asked, update the disk superblock with incore counter values if we
-        * are using non-persistent counters so that they don't get too far out
-        * of sync if we crash or get a forced shutdown. We don't want to force
-        * this to disk, just get a transaction into the iclogs....
-        */
-       if (flags & SYNC_SUPER)
-               xfs_log_sbcount(mp, 0);
-
        /*
         * Now check to see if the log needs a "dummy" transaction.
         */
-
        if (!(flags & SYNC_REMOUNT) && xfs_log_need_covered(mp)) {
                xfs_trans_t *tp;
                xfs_inode_t *ip;