| /* |
| * XFS filesystem operations. |
| * |
| * 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 |
| * 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: |
| * |
| * http://www.sgi.com |
| * |
| * For further information regarding this notice, see: |
| * |
| * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ |
| */ |
| |
| #include "xfs.h" |
| #include "xfs_macros.h" |
| #include "xfs_types.h" |
| #include "xfs_inum.h" |
| #include "xfs_log.h" |
| #include "xfs_trans.h" |
| #include "xfs_sb.h" |
| #include "xfs_dir.h" |
| #include "xfs_dir2.h" |
| #include "xfs_dmapi.h" |
| #include "xfs_mount.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_dinode.h" |
| #include "xfs_inode_item.h" |
| #include "xfs_inode.h" |
| #include "xfs_ag.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_dir2_trace.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 *); |
| |
| int |
| xfs_init(void) |
| { |
| extern kmem_zone_t *xfs_bmap_free_item_zone; |
| extern kmem_zone_t *xfs_btree_cur_zone; |
| extern kmem_zone_t *xfs_trans_zone; |
| extern kmem_zone_t *xfs_buf_item_zone; |
| extern kmem_zone_t *xfs_dabuf_zone; |
| #ifdef XFS_DABUF_DEBUG |
| extern lock_t xfs_dabuf_global_lock; |
| spinlock_init(&xfs_dabuf_global_lock, "xfsda"); |
| #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_inode_zone = kmem_zone_init(sizeof(xfs_inode_t), "xfs_inode"); |
| 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"); |
| |
| /* |
| * 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"); |
| xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); |
| xfs_ili_zone = kmem_zone_init(sizeof(xfs_inode_log_item_t), "xfs_ili"); |
| xfs_chashlist_zone = kmem_zone_init(sizeof(xfs_chashlist_t), |
| "xfs_chashlist"); |
| xfs_acl_zone_init(xfs_acl_zone, "xfs_acl"); |
| |
| /* |
| * 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_DIR_TRACE |
| xfs_dir_trace_buf = ktrace_alloc(XFS_DIR_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 |
| xfs_cleanup(void) |
| { |
| extern kmem_zone_t *xfs_bmap_free_item_zone; |
| extern kmem_zone_t *xfs_btree_cur_zone; |
| extern kmem_zone_t *xfs_inode_zone; |
| extern kmem_zone_t *xfs_trans_zone; |
| extern kmem_zone_t *xfs_da_state_zone; |
| extern kmem_zone_t *xfs_dabuf_zone; |
| extern kmem_zone_t *xfs_efd_zone; |
| extern kmem_zone_t *xfs_efi_zone; |
| extern kmem_zone_t *xfs_buf_item_zone; |
| extern kmem_zone_t *xfs_chashlist_zone; |
| |
| xfs_cleanup_procfs(); |
| xfs_sysctl_unregister(); |
| xfs_refcache_destroy(); |
| 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_DIR_TRACE |
| ktrace_free(xfs_dir_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_cache_destroy(xfs_bmap_free_item_zone); |
| kmem_cache_destroy(xfs_btree_cur_zone); |
| kmem_cache_destroy(xfs_inode_zone); |
| kmem_cache_destroy(xfs_trans_zone); |
| kmem_cache_destroy(xfs_da_state_zone); |
| kmem_cache_destroy(xfs_dabuf_zone); |
| kmem_cache_destroy(xfs_buf_item_zone); |
| kmem_cache_destroy(xfs_efd_zone); |
| kmem_cache_destroy(xfs_efi_zone); |
| kmem_cache_destroy(xfs_ifork_zone); |
| kmem_cache_destroy(xfs_ili_zone); |
| kmem_cache_destroy(xfs_chashlist_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 vfs *vfs, |
| 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 && |
| #if defined(DEBUG) || defined(XLOG_NOLOG) |
| ap->logbufs != 0 && |
| #endif |
| (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 != 16 * 1024 && |
| ap->logbufsize != 32 * 1024 && |
| ap->logbufsize != 64 * 1024 && |
| ap->logbufsize != 128 * 1024 && |
| ap->logbufsize != 256 * 1024) { |
| cmn_err(CE_WARN, |
| "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", |
| ap->logbufsize); |
| return XFS_ERROR(EINVAL); |
| } |
| mp->m_ihsize = ap->ihashsize; |
| 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->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_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); |
| |
| 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_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; |
| |
| /* |
| * no recovery flag requires a read-only mount |
| */ |
| if (ap->flags & XFSMNT_NORECOVERY) { |
| if (!(vfs->vfs_flag & VFS_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_NOLOGFLUSH) |
| mp->m_flags |= XFS_MOUNT_NOLOGFLUSH; |
| |
| 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 vfs *vfs, |
| struct xfs_mount_args *ap, |
| struct xfs_mount *mp) |
| { |
| int ronly = (vfs->vfs_flag & VFS_RDONLY); |
| |
| /* Fail a mount where the logbuf is smaller then the log stripe */ |
| if (XFS_SB_VERSION_HASLOGV2(&mp->m_sb)) { |
| if ((ap->logbufsize == -1) && |
| (mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE)) { |
| mp->m_logbsize = mp->m_sb.sb_logsunit; |
| } else if (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); |
| } |
| } |
| |
| /* |
| * 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); |
| } |
| |
| 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. |
| */ |
| STATIC int |
| xfs_mount( |
| struct bhv_desc *bhvp, |
| struct xfs_mount_args *args, |
| cred_t *credp) |
| { |
| struct vfs *vfsp = bhvtovfs(bhvp); |
| struct bhv_desc *p; |
| struct xfs_mount *mp = XFS_BHVTOM(bhvp); |
| struct block_device *ddev, *logdev, *rtdev; |
| int flags = 0, error; |
| |
| ddev = vfsp->vfs_super->s_bdev; |
| logdev = rtdev = NULL; |
| |
| /* |
| * Setup xfs_mount function vectors from available behaviors |
| */ |
| p = vfs_bhv_lookup(vfsp, VFS_POSITION_DM); |
| mp->m_dm_ops = p ? *(xfs_dmops_t *) vfs_bhv_custom(p) : xfs_dmcore_stub; |
| p = vfs_bhv_lookup(vfsp, VFS_POSITION_QM); |
| mp->m_qm_ops = p ? *(xfs_qmops_t *) vfs_bhv_custom(p) : xfs_qmcore_stub; |
| p = vfs_bhv_lookup(vfsp, VFS_POSITION_IO); |
| mp->m_io_ops = p ? *(xfs_ioops_t *) vfs_bhv_custom(p) : xfs_iocore_xfs; |
| |
| /* |
| * 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) |
| goto error0; |
| } |
| mp->m_logdev_targp = (logdev && logdev != ddev) ? |
| xfs_alloc_buftarg(logdev, 1) : mp->m_ddev_targp; |
| if (!mp->m_logdev_targp) |
| goto error0; |
| |
| /* |
| * Setup flags based on mount(2) options and then the superblock |
| */ |
| error = xfs_start_flags(vfsp, args, mp); |
| if (error) |
| goto error1; |
| error = xfs_readsb(mp); |
| if (error) |
| goto error1; |
| error = xfs_finish_flags(vfsp, 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; |
| |
| error = XFS_IOINIT(vfsp, args, flags); |
| if (!error) |
| 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); |
| return error; |
| } |
| |
| STATIC int |
| xfs_unmount( |
| bhv_desc_t *bdp, |
| int flags, |
| cred_t *credp) |
| { |
| struct vfs *vfsp = bhvtovfs(bdp); |
| xfs_mount_t *mp = XFS_BHVTOM(bdp); |
| xfs_inode_t *rip; |
| 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); |
| |
| if (vfsp->vfs_flag & VFS_DMI) { |
| error = XFS_SEND_PREUNMOUNT(mp, vfsp, |
| 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; |
| } |
| |
| /* |
| * First blow any referenced inode from this file system |
| * out of the reference cache, and delete the timer. |
| */ |
| xfs_refcache_purge_mp(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->m_bhv, |
| (SYNC_WAIT | SYNC_CLOSE), credp); |
| 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, vfsp, 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); |
| } |
| |
| return XFS_ERROR(error); |
| } |
| |
| STATIC int |
| 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); |
| |
| /* This loop must run at least twice. |
| * The first instance of the loop will flush |
| * most meta data but that will generate more |
| * meta data (typically directory updates). |
| * Which then must be flushed and logged before |
| * we can write the unmount record. |
| */ |
| do { |
| xfs_syncsub(mp, SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT, 0, NULL); |
| pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1); |
| if (!pincount) { |
| delay(50); |
| count++; |
| } |
| } while (count < 2); |
| |
| return 0; |
| } |
| |
| STATIC int |
| xfs_mntupdate( |
| bhv_desc_t *bdp, |
| int *flags, |
| struct xfs_mount_args *args) |
| { |
| struct vfs *vfsp = bhvtovfs(bdp); |
| xfs_mount_t *mp = XFS_BHVTOM(bdp); |
| int error; |
| |
| if (args->flags & XFSMNT_NOATIME) |
| mp->m_flags |= XFS_MOUNT_NOATIME; |
| 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 (*flags & MS_RDONLY) { |
| 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; |
| } |
| |
| /* |
| * xfs_unmount_flush implements a set of flush operation on special |
| * inodes, which are needed as a separate set of operations so that |
| * they can be called as part of relocation process. |
| */ |
| int |
| xfs_unmount_flush( |
| xfs_mount_t *mp, /* Mount structure we are getting |
| rid of. */ |
| int relocation) /* Called from vfs relocation. */ |
| { |
| xfs_inode_t *rip = mp->m_rootip; |
| xfs_inode_t *rbmip; |
| xfs_inode_t *rsumip = NULL; |
| vnode_t *rvp = XFS_ITOV(rip); |
| int error; |
| |
| xfs_ilock(rip, XFS_ILOCK_EXCL); |
| xfs_iflock(rip); |
| |
| /* |
| * Flush out the real time inodes. |
| */ |
| if ((rbmip = mp->m_rbmip) != NULL) { |
| xfs_ilock(rbmip, XFS_ILOCK_EXCL); |
| xfs_iflock(rbmip); |
| error = xfs_iflush(rbmip, XFS_IFLUSH_SYNC); |
| xfs_iunlock(rbmip, XFS_ILOCK_EXCL); |
| |
| if (error == EFSCORRUPTED) |
| goto fscorrupt_out; |
| |
| ASSERT(vn_count(XFS_ITOV(rbmip)) == 1); |
| |
| rsumip = mp->m_rsumip; |
| xfs_ilock(rsumip, XFS_ILOCK_EXCL); |
| xfs_iflock(rsumip); |
| error = xfs_iflush(rsumip, XFS_IFLUSH_SYNC); |
| xfs_iunlock(rsumip, XFS_ILOCK_EXCL); |
| |
| if (error == EFSCORRUPTED) |
| goto fscorrupt_out; |
| |
| ASSERT(vn_count(XFS_ITOV(rsumip)) == 1); |
| } |
| |
| /* |
| * Synchronously flush root inode to disk |
| */ |
| error = xfs_iflush(rip, XFS_IFLUSH_SYNC); |
| if (error == EFSCORRUPTED) |
| goto fscorrupt_out2; |
| |
| if (vn_count(rvp) != 1 && !relocation) { |
| xfs_iunlock(rip, XFS_ILOCK_EXCL); |
| return XFS_ERROR(EBUSY); |
| } |
| |
| /* |
| * Release dquot that rootinode, rbmino and rsumino might be holding, |
| * flush and purge the quota inodes. |
| */ |
| error = XFS_QM_UNMOUNT(mp); |
| if (error == EFSCORRUPTED) |
| goto fscorrupt_out2; |
| |
| if (rbmip) { |
| VN_RELE(XFS_ITOV(rbmip)); |
| VN_RELE(XFS_ITOV(rsumip)); |
| } |
| |
| xfs_iunlock(rip, XFS_ILOCK_EXCL); |
| return 0; |
| |
| fscorrupt_out: |
| xfs_ifunlock(rip); |
| |
| fscorrupt_out2: |
| xfs_iunlock(rip, XFS_ILOCK_EXCL); |
| |
| return XFS_ERROR(EFSCORRUPTED); |
| } |
| |
| /* |
| * xfs_root extracts the root vnode from a vfs. |
| * |
| * vfsp -- the vfs struct for the desired file system |
| * vpp -- address of the caller's vnode pointer which should be |
| * set to the desired fs root vnode |
| */ |
| STATIC int |
| xfs_root( |
| bhv_desc_t *bdp, |
| vnode_t **vpp) |
| { |
| vnode_t *vp; |
| |
| vp = XFS_ITOV((XFS_BHVTOM(bdp))->m_rootip); |
| VN_HOLD(vp); |
| *vpp = vp; |
| return 0; |
| } |
| |
| /* |
| * xfs_statvfs |
| * |
| * Fill in the statvfs structure for the given file system. We use |
| * the superblock lock in the mount structure to ensure a consistent |
| * snapshot of the counters returned. |
| */ |
| STATIC int |
| xfs_statvfs( |
| bhv_desc_t *bdp, |
| xfs_statfs_t *statp, |
| vnode_t *vp) |
| { |
| __uint64_t fakeinos; |
| xfs_extlen_t lsize; |
| xfs_mount_t *mp; |
| xfs_sb_t *sbp; |
| unsigned long s; |
| u64 id; |
| |
| mp = XFS_BHVTOM(bdp); |
| sbp = &(mp->m_sb); |
| |
| statp->f_type = XFS_SB_MAGIC; |
| |
| s = XFS_SB_LOCK(mp); |
| statp->f_bsize = sbp->sb_blocksize; |
| lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; |
| statp->f_blocks = sbp->sb_dblocks - lsize; |
| statp->f_bfree = statp->f_bavail = sbp->sb_fdblocks; |
| fakeinos = statp->f_bfree << sbp->sb_inopblog; |
| #if XFS_BIG_INUMS |
| fakeinos += mp->m_inoadd; |
| #endif |
| statp->f_files = |
| MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); |
| if (mp->m_maxicount) |
| #if XFS_BIG_INUMS |
| if (!mp->m_inoadd) |
| #endif |
| statp->f_files = min_t(typeof(statp->f_files), |
| statp->f_files, |
| mp->m_maxicount); |
| statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); |
| XFS_SB_UNLOCK(mp, s); |
| |
| id = huge_encode_dev(mp->m_dev); |
| statp->f_fsid.val[0] = (u32)id; |
| statp->f_fsid.val[1] = (u32)(id >> 32); |
| statp->f_namelen = MAXNAMELEN - 1; |
| |
| return 0; |
| } |
| |
| |
| /* |
| * xfs_sync flushes any pending I/O to file system vfsp. |
| * |
| * This routine is called by vfs_sync() to make sure that things make it |
| * out to disk eventually, on sync() system calls to flush out everything, |
| * and when the file system is unmounted. For the vfs_sync() case, all |
| * we really need to do is sync out the log to make all of our meta-data |
| * updates permanent (except for timestamps). For calls from pflushd(), |
| * dirty pages are kept moving by calling pdflush() on the inodes |
| * containing them. We also flush the inodes that we can lock without |
| * sleeping and the superblock if we can lock it without sleeping from |
| * vfs_sync() so that items at the tail of the log are always moving out. |
| * |
| * Flags: |
| * SYNC_BDFLUSH - We're being called from vfs_sync() so we don't want |
| * to sleep if we can help it. All we really need |
| * to do is ensure that the log is synced at least |
| * periodically. We also push the inodes and |
| * superblock if we can lock them without sleeping |
| * and they are not pinned. |
| * SYNC_ATTR - We need to flush the inodes. If SYNC_BDFLUSH is not |
| * set, then we really want to lock each inode and flush |
| * it. |
| * SYNC_WAIT - All the flushes that take place in this call should |
| * be synchronous. |
| * SYNC_DELWRI - This tells us to push dirty pages associated with |
| * inodes. SYNC_WAIT and SYNC_BDFLUSH are used to |
| * determine if they should be flushed sync, async, or |
| * delwri. |
| * SYNC_CLOSE - This flag is passed when the system is being |
| * unmounted. We should sync and invalidate everthing. |
| * SYNC_FSDATA - This indicates that the caller would like to make |
| * sure the superblock is safe on disk. We can ensure |
| * this by simply makeing sure the log gets flushed |
| * if SYNC_BDFLUSH is set, and by actually writing it |
| * out otherwise. |
| * |
| */ |
| /*ARGSUSED*/ |
| STATIC int |
| xfs_sync( |
| bhv_desc_t *bdp, |
| int flags, |
| cred_t *credp) |
| { |
| xfs_mount_t *mp = XFS_BHVTOM(bdp); |
| |
| if (unlikely(flags == SYNC_QUIESCE)) |
| return xfs_quiesce_fs(mp); |
| else |
| return xfs_syncsub(mp, flags, 0, NULL); |
| } |
| |
| /* |
| * xfs sync routine for internal use |
| * |
| * This routine supports all of the flags defined for the generic VFS_SYNC |
| * interface as explained above under xfs_sync. In the interests of not |
| * changing interfaces within the 6.5 family, additional internallly- |
| * required functions are specified within a separate xflags parameter, |
| * only available by calling this routine. |
| * |
| */ |
| STATIC int |
| xfs_sync_inodes( |
| xfs_mount_t *mp, |
| int flags, |
| int xflags, |
| int *bypassed) |
| { |
| xfs_inode_t *ip = NULL; |
| xfs_inode_t *ip_next; |
| xfs_buf_t *bp; |
| vnode_t *vp = NULL; |
| int error; |
| int last_error; |
| uint64_t fflag; |
| uint lock_flags; |
| uint base_lock_flags; |
| boolean_t mount_locked; |
| boolean_t vnode_refed; |
| int preempt; |
| xfs_dinode_t *dip; |
| xfs_iptr_t *ipointer; |
| #ifdef DEBUG |
| boolean_t ipointer_in = B_FALSE; |
| |
| #define IPOINTER_SET ipointer_in = B_TRUE |
| #define IPOINTER_CLR ipointer_in = B_FALSE |
| #else |
| #define IPOINTER_SET |
| #define IPOINTER_CLR |
| #endif |
| |
| |
| /* Insert a marker record into the inode list after inode ip. The list |
| * must be locked when this is called. After the call the list will no |
| * longer be locked. |
| */ |
| #define IPOINTER_INSERT(ip, mp) { \ |
| ASSERT(ipointer_in == B_FALSE); \ |
| ipointer->ip_mnext = ip->i_mnext; \ |
| ipointer->ip_mprev = ip; \ |
| ip->i_mnext = (xfs_inode_t *)ipointer; \ |
| ipointer->ip_mnext->i_mprev = (xfs_inode_t *)ipointer; \ |
| preempt = 0; \ |
| XFS_MOUNT_IUNLOCK(mp); \ |
| mount_locked = B_FALSE; \ |
| IPOINTER_SET; \ |
| } |
| |
| /* Remove the marker from the inode list. If the marker was the only item |
| * in the list then there are no remaining inodes and we should zero out |
| * the whole list. If we are the current head of the list then move the head |
| * past us. |
| */ |
| #define IPOINTER_REMOVE(ip, mp) { \ |
| ASSERT(ipointer_in == B_TRUE); \ |
| if (ipointer->ip_mnext != (xfs_inode_t *)ipointer) { \ |
| ip = ipointer->ip_mnext; \ |
| ip->i_mprev = ipointer->ip_mprev; \ |
| ipointer->ip_mprev->i_mnext = ip; \ |
| if (mp->m_inodes == (xfs_inode_t *)ipointer) { \ |
| mp->m_inodes = ip; \ |
| } \ |
| } else { \ |
| ASSERT(mp->m_inodes == (xfs_inode_t *)ipointer); \ |
| mp->m_inodes = NULL; \ |
| ip = NULL; \ |
| } \ |
| IPOINTER_CLR; \ |
| } |
| |
| #define XFS_PREEMPT_MASK 0x7f |
| |
| if (bypassed) |
| *bypassed = 0; |
| if (XFS_MTOVFS(mp)->vfs_flag & VFS_RDONLY) |
| return 0; |
| error = 0; |
| last_error = 0; |
| preempt = 0; |
| |
| /* Allocate a reference marker */ |
| 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) |
| fflag = XFS_B_DELWRI; |
| if (flags & SYNC_WAIT) |
| fflag = 0; /* synchronous overrides all */ |
| |
| base_lock_flags = XFS_ILOCK_SHARED; |
| if (flags & (SYNC_DELWRI | SYNC_CLOSE)) { |
| /* |
| * We need the I/O lock if we're going to call any of |
| * the flush/inval routines. |
| */ |
| base_lock_flags |= XFS_IOLOCK_SHARED; |
| } |
| |
| XFS_MOUNT_ILOCK(mp); |
| |
| ip = mp->m_inodes; |
| |
| mount_locked = B_TRUE; |
| vnode_refed = B_FALSE; |
| |
| IPOINTER_CLR; |
| |
| do { |
| ASSERT(ipointer_in == B_FALSE); |
| ASSERT(vnode_refed == B_FALSE); |
| |
| lock_flags = base_lock_flags; |
| |
| /* |
| * There were no inodes in the list, just break out |
| * of the loop. |
| */ |
| if (ip == NULL) { |
| break; |
| } |
| |
| /* |
| * We found another sync thread marker - skip it |
| */ |
| if (ip->i_mount == NULL) { |
| ip = ip->i_mnext; |
| continue; |
| } |
| |
| vp = XFS_ITOV_NULL(ip); |
| |
| /* |
| * If the vnode is gone then this is being torn down, |
| * call reclaim if it is flushed, else let regular flush |
| * code deal with it later in the loop. |
| */ |
| |
| if (vp == NULL) { |
| /* Skip ones already in reclaim */ |
| if (ip->i_flags & XFS_IRECLAIM) { |
| ip = ip->i_mnext; |
| continue; |
| } |
| if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) { |
| ip = ip->i_mnext; |
| } else if ((xfs_ipincount(ip) == 0) && |
| xfs_iflock_nowait(ip)) { |
| IPOINTER_INSERT(ip, mp); |
| |
| xfs_finish_reclaim(ip, 1, |
| XFS_IFLUSH_DELWRI_ELSE_ASYNC); |
| |
| XFS_MOUNT_ILOCK(mp); |
| mount_locked = B_TRUE; |
| IPOINTER_REMOVE(ip, mp); |
| } else { |
| xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| ip = ip->i_mnext; |
| } |
| continue; |
| } |
| |
| if (VN_BAD(vp)) { |
| ip = ip->i_mnext; |
| continue; |
| } |
| |
| if (XFS_FORCED_SHUTDOWN(mp) && !(flags & SYNC_CLOSE)) { |
| XFS_MOUNT_IUNLOCK(mp); |
| kmem_free(ipointer, sizeof(xfs_iptr_t)); |
| return 0; |
| } |
| |
| /* |
| * If this is just vfs_sync() or pflushd() calling |
| * then we can skip inodes for which it looks like |
| * there is nothing to do. Since we don't have the |
| * inode locked this is racey, but these are periodic |
| * calls so it doesn't matter. For the others we want |
| * to know for sure, so we at least try to lock them. |
| */ |
| if (flags & SYNC_BDFLUSH) { |
| if (((ip->i_itemp == NULL) || |
| !(ip->i_itemp->ili_format.ilf_fields & |
| XFS_ILOG_ALL)) && |
| (ip->i_update_core == 0)) { |
| ip = ip->i_mnext; |
| continue; |
| } |
| } |
| |
| /* |
| * Try to lock without sleeping. We're out of order with |
| * the inode list lock here, so if we fail we need to drop |
| * the mount lock and try again. If we're called from |
| * bdflush() here, then don't bother. |
| * |
| * The inode lock here actually coordinates with the |
| * almost spurious inode lock in xfs_ireclaim() to prevent |
| * the vnode we handle here without a reference from |
| * being freed while we reference it. If we lock the inode |
| * while it's on the mount list here, then the spurious inode |
| * lock in xfs_ireclaim() after the inode is pulled from |
| * the mount list will sleep until we release it here. |
| * This keeps the vnode from being freed while we reference |
| * it. |
| */ |
| if (xfs_ilock_nowait(ip, lock_flags) == 0) { |
| if ((flags & SYNC_BDFLUSH) || (vp == NULL)) { |
| ip = ip->i_mnext; |
| continue; |
| } |
| |
| vp = vn_grab(vp); |
| if (vp == NULL) { |
| ip = ip->i_mnext; |
| continue; |
| } |
| |
| IPOINTER_INSERT(ip, mp); |
| xfs_ilock(ip, lock_flags); |
| |
| ASSERT(vp == XFS_ITOV(ip)); |
| ASSERT(ip->i_mount == mp); |
| |
| vnode_refed = B_TRUE; |
| } |
| |
| /* From here on in the loop we may have a marker record |
| * in the inode list. |
| */ |
| |
| if ((flags & SYNC_CLOSE) && (vp != NULL)) { |
| /* |
| * This is the shutdown case. We just need to |
| * flush and invalidate all the pages associated |
| * with the inode. Drop the inode lock since |
| * we can't hold it across calls to the buffer |
| * cache. |
| * |
| * We don't set the VREMAPPING bit in the vnode |
| * here, because we don't hold the vnode lock |
| * exclusively. It doesn't really matter, though, |
| * because we only come here when we're shutting |
| * down anyway. |
| */ |
| xfs_iunlock(ip, XFS_ILOCK_SHARED); |
| |
| if (XFS_FORCED_SHUTDOWN(mp)) { |
| VOP_TOSS_PAGES(vp, 0, -1, FI_REMAPF); |
| } else { |
| VOP_FLUSHINVAL_PAGES(vp, 0, -1, FI_REMAPF); |
| } |
| |
| xfs_ilock(ip, XFS_ILOCK_SHARED); |
| |
| } else if ((flags & SYNC_DELWRI) && (vp != NULL)) { |
| if (VN_DIRTY(vp)) { |
| /* We need to have dropped the lock here, |
| * so insert a marker if we have not already |
| * done so. |
| */ |
| if (mount_locked) { |
| IPOINTER_INSERT(ip, mp); |
| } |
| |
| /* |
| * Drop the inode lock since we can't hold it |
| * across calls to the buffer cache. |
| */ |
| xfs_iunlock(ip, XFS_ILOCK_SHARED); |
| VOP_FLUSH_PAGES(vp, (xfs_off_t)0, -1, |
| fflag, FI_NONE, error); |
| xfs_ilock(ip, XFS_ILOCK_SHARED); |
| } |
| |
| } |
| |
| if (flags & SYNC_BDFLUSH) { |
| if ((flags & SYNC_ATTR) && |
| ((ip->i_update_core) || |
| ((ip->i_itemp != NULL) && |
| (ip->i_itemp->ili_format.ilf_fields != 0)))) { |
| |
| /* Insert marker and drop lock if not already |
| * done. |
| */ |
| if (mount_locked) { |
| IPOINTER_INSERT(ip, mp); |
| } |
| |
| /* |
| * We don't want the periodic flushing of the |
| * inodes by vfs_sync() to interfere with |
| * I/O to the file, especially read I/O |
| * where it is only the access time stamp |
| * that is being flushed out. To prevent |
| * long periods where we have both inode |
| * locks held shared here while reading the |
| * inode's buffer in from disk, we drop the |
| * inode lock while reading in the inode |
| * buffer. We have to release the buffer |
| * and reacquire the inode lock so that they |
| * are acquired in the proper order (inode |
| * locks first). The buffer will go at the |
| * end of the lru chain, though, so we can |
| * expect it to still be there when we go |
| * for it again in xfs_iflush(). |
| */ |
| if ((xfs_ipincount(ip) == 0) && |
| xfs_iflock_nowait(ip)) { |
| |
| xfs_ifunlock(ip); |
| xfs_iunlock(ip, XFS_ILOCK_SHARED); |
| |
| error = xfs_itobp(mp, NULL, ip, |
| &dip, &bp, 0); |
| if (!error) { |
| xfs_buf_relse(bp); |
| } else { |
| /* Bailing out, remove the |
| * marker and free it. |
| */ |
| XFS_MOUNT_ILOCK(mp); |
| |
| IPOINTER_REMOVE(ip, mp); |
| |
| XFS_MOUNT_IUNLOCK(mp); |
| |
| ASSERT(!(lock_flags & |
| XFS_IOLOCK_SHARED)); |
| |
| kmem_free(ipointer, |
| sizeof(xfs_iptr_t)); |
| return (0); |
| } |
| |
| /* |
| * Since we dropped the inode lock, |
| * the inode may have been reclaimed. |
| * Therefore, we reacquire the mount |
| * lock and check to see if we were the |
| * inode reclaimed. If this happened |
| * then the ipointer marker will no |
| * longer point back at us. In this |
| * case, move ip along to the inode |
| * after the marker, remove the marker |
| * and continue. |
| */ |
| XFS_MOUNT_ILOCK(mp); |
| mount_locked = B_TRUE; |
| |
| if (ip != ipointer->ip_mprev) { |
| IPOINTER_REMOVE(ip, mp); |
| |
| ASSERT(!vnode_refed); |
| ASSERT(!(lock_flags & |
| XFS_IOLOCK_SHARED)); |
| continue; |
| } |
| |
| ASSERT(ip->i_mount == mp); |
| |
| if (xfs_ilock_nowait(ip, |
| XFS_ILOCK_SHARED) == 0) { |
| ASSERT(ip->i_mount == mp); |
| /* |
| * We failed to reacquire |
| * the inode lock without |
| * sleeping, so just skip |
| * the inode for now. We |
| * clear the ILOCK bit from |
| * the lock_flags so that we |
| * won't try to drop a lock |
| * we don't hold below. |
| */ |
| lock_flags &= ~XFS_ILOCK_SHARED; |
| IPOINTER_REMOVE(ip_next, mp); |
| } else if ((xfs_ipincount(ip) == 0) && |
| xfs_iflock_nowait(ip)) { |
| ASSERT(ip->i_mount == mp); |
| /* |
| * Since this is vfs_sync() |
| * calling we only flush the |
| * inode out if we can lock |
| * it without sleeping and |
| * it is not pinned. Drop |
| * the mount lock here so |
| * that we don't hold it for |
| * too long. We already have |
| * a marker in the list here. |
| */ |
| XFS_MOUNT_IUNLOCK(mp); |
| mount_locked = B_FALSE; |
| error = xfs_iflush(ip, |
| XFS_IFLUSH_DELWRI); |
| } else { |
| ASSERT(ip->i_mount == mp); |
| IPOINTER_REMOVE(ip_next, mp); |
| } |
| } |
| |
| } |
| |
| } else { |
| if ((flags & SYNC_ATTR) && |
| ((ip->i_update_core) || |
| ((ip->i_itemp != NULL) && |
| (ip->i_itemp->ili_format.ilf_fields != 0)))) { |
| if (mount_locked) { |
| IPOINTER_INSERT(ip, mp); |
| } |
| |
| if (flags & SYNC_WAIT) { |
| xfs_iflock(ip); |
| error = xfs_iflush(ip, |
| XFS_IFLUSH_SYNC); |
| } else { |
| /* |
| * If we can't acquire the flush |
| * lock, then the inode is already |
| * being flushed so don't bother |
| * waiting. If we can lock it then |
| * do a delwri flush so we can |
| * combine multiple inode flushes |
| * in each disk write. |
| */ |
| if (xfs_iflock_nowait(ip)) { |
| error = xfs_iflush(ip, |
| XFS_IFLUSH_DELWRI); |
| } |
| else if (bypassed) |
| (*bypassed)++; |
| } |
| } |
| } |
| |
| if (lock_flags != 0) { |
| xfs_iunlock(ip, lock_flags); |
| } |
| |
| if (vnode_refed) { |
| /* |
| * If we had to take a reference on the vnode |
| * 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(). |
| * |
| * Make sure to drop the mount lock before calling |
| * VN_RELE() so that we don't trip over ourselves if |
| * we have to go for the mount lock again in the |
| * inactive code. |
| */ |
| if (mount_locked) { |
| IPOINTER_INSERT(ip, mp); |
| } |
| |
| VN_RELE(vp); |
| |
| vnode_refed = B_FALSE; |
| } |
| |
| if (error) { |
| last_error = error; |
| } |
| |
| /* |
| * bail out if the filesystem is corrupted. |
| */ |
| if (error == EFSCORRUPTED) { |
| if (!mount_locked) { |
| XFS_MOUNT_ILOCK(mp); |
| IPOINTER_REMOVE(ip, mp); |
| } |
| XFS_MOUNT_IUNLOCK(mp); |
| ASSERT(ipointer_in == B_FALSE); |
| kmem_free(ipointer, sizeof(xfs_iptr_t)); |
| return XFS_ERROR(error); |
| } |
| |
| /* Let other threads have a chance at the mount lock |
| * if we have looped many times without dropping the |
| * lock. |
| */ |
| if ((++preempt & XFS_PREEMPT_MASK) == 0) { |
| if (mount_locked) { |
| IPOINTER_INSERT(ip, mp); |
| } |
| } |
| |
| if (mount_locked == B_FALSE) { |
| XFS_MOUNT_ILOCK(mp); |
| mount_locked = B_TRUE; |
| IPOINTER_REMOVE(ip, mp); |
| continue; |
| } |
| |
| ASSERT(ipointer_in == B_FALSE); |
| ip = ip->i_mnext; |
| |
| } while (ip != mp->m_inodes); |
| |
| XFS_MOUNT_IUNLOCK(mp); |
| |
| ASSERT(ipointer_in == B_FALSE); |
| |
| kmem_free(ipointer, sizeof(xfs_iptr_t)); |
| return XFS_ERROR(last_error); |
| } |
| |
| /* |
| * xfs sync routine for internal use |
| * |
| * This routine supports all of the flags defined for the generic VFS_SYNC |
| * interface as explained above under xfs_sync. In the interests of not |
| * changing interfaces within the 6.5 family, additional internallly- |
| * required functions are specified within a separate xflags parameter, |
| * only available by calling this routine. |
| * |
| */ |
| int |
| xfs_syncsub( |
| xfs_mount_t *mp, |
| int flags, |
| int xflags, |
| int *bypassed) |
| { |
| int error = 0; |
| int last_error = 0; |
| uint log_flags = XFS_LOG_FORCE; |
| xfs_buf_t *bp; |
| xfs_buf_log_item_t *bip; |
| |
| /* |
| * Sync out the log. This ensures that the log is periodically |
| * flushed even if there is not enough activity to fill it up. |
| */ |
| if (flags & SYNC_WAIT) |
| log_flags |= XFS_LOG_SYNC; |
| |
| xfs_log_force(mp, (xfs_lsn_t)0, log_flags); |
| |
| if (flags & (SYNC_ATTR|SYNC_DELWRI)) { |
| if (flags & SYNC_BDFLUSH) |
| xfs_finish_reclaim_all(mp, 1); |
| else |
| error = xfs_sync_inodes(mp, flags, xflags, bypassed); |
| } |
| |
| /* |
| * Flushing out dirty data above probably generated more |
| * log activity, so if this isn't vfs_sync() then flush |
| * the log again. |
| */ |
| if (flags & SYNC_DELWRI) { |
| xfs_log_force(mp, (xfs_lsn_t)0, log_flags); |
| } |
| |
| if (flags & SYNC_FSDATA) { |
| /* |
| * If this is vfs_sync() then only sync the superblock |
| * if we can lock it without sleeping and it is not pinned. |
| */ |
| if (flags & SYNC_BDFLUSH) { |
| bp = xfs_getsb(mp, XFS_BUF_TRYLOCK); |
| if (bp != NULL) { |
| bip = XFS_BUF_FSPRIVATE(bp,xfs_buf_log_item_t*); |
| if ((bip != NULL) && |
| xfs_buf_item_dirty(bip)) { |
| if (!(XFS_BUF_ISPINNED(bp))) { |
| XFS_BUF_ASYNC(bp); |
| error = xfs_bwrite(mp, bp); |
| } else { |
| xfs_buf_relse(bp); |
| } |
| } else { |
| xfs_buf_relse(bp); |
| } |
| } |
| } else { |
| bp = xfs_getsb(mp, 0); |
| /* |
| * If the buffer is pinned then push on the log so |
| * we won't get stuck waiting in the write for |
| * someone, maybe ourselves, to flush the log. |
| * Even though we just pushed the log above, we |
| * did not have the superblock buffer locked at |
| * that point so it can become pinned in between |
| * there and here. |
| */ |
| if (XFS_BUF_ISPINNED(bp)) |
| xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE); |
| if (flags & SYNC_WAIT) |
| XFS_BUF_UNASYNC(bp); |
| else |
| XFS_BUF_ASYNC(bp); |
| error = xfs_bwrite(mp, bp); |
| } |
| if (error) { |
| last_error = error; |
| } |
| } |
| |
| /* |
| * 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) { |
| xfs_refcache_purge_some(mp); |
| } |
| |
| /* |
| * 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; |
| |
| /* |
| * Put a dummy transaction in the log to tell |
| * recovery that all others are OK. |
| */ |
| tp = xfs_trans_alloc(mp, XFS_TRANS_DUMMY1); |
| if ((error = xfs_trans_reserve(tp, 0, |
| XFS_ICHANGE_LOG_RES(mp), |
| 0, 0, 0))) { |
| xfs_trans_cancel(tp, 0); |
| return error; |
| } |
| |
| ip = mp->m_rootip; |
| xfs_ilock(ip, XFS_ILOCK_EXCL); |
| |
| xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); |
| xfs_trans_ihold(tp, ip); |
| xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
| error = xfs_trans_commit(tp, 0, NULL); |
| xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| xfs_log_force(mp, (xfs_lsn_t)0, log_flags); |
| } |
| |
| /* |
| * When shutting down, we need to insure that the AIL is pushed |
| * to disk or the filesystem can appear corrupt from the PROM. |
| */ |
| if ((flags & (SYNC_CLOSE|SYNC_WAIT)) == (SYNC_CLOSE|SYNC_WAIT)) { |
| XFS_bflush(mp->m_ddev_targp); |
| if (mp->m_rtdev_targp) { |
| XFS_bflush(mp->m_rtdev_targp); |
| } |
| } |
| |
| return XFS_ERROR(last_error); |
| } |
| |
| /* |
| * xfs_vget - called by DMAPI and NFSD to get vnode from file handle |
| */ |
| STATIC int |
| xfs_vget( |
| bhv_desc_t *bdp, |
| vnode_t **vpp, |
| fid_t *fidp) |
| { |
| xfs_mount_t *mp = XFS_BHVTOM(bdp); |
| xfs_fid_t *xfid = (struct xfs_fid *)fidp; |
| xfs_inode_t *ip; |
| int error; |
| xfs_ino_t ino; |
| unsigned int igen; |
| |
| /* |
| * Invalid. Since handles can be created in user space and passed in |
| * via gethandle(), this is not cause for a panic. |
| */ |
| if (xfid->xfs_fid_len != sizeof(*xfid) - sizeof(xfid->xfs_fid_len)) |
| return XFS_ERROR(EINVAL); |
| |
| ino = xfid->xfs_fid_ino; |
| igen = xfid->xfs_fid_gen; |
| |
| /* |
| * NFS can sometimes send requests for ino 0. Fail them gracefully. |
| */ |
| if (ino == 0) |
| return XFS_ERROR(ESTALE); |
| |
| error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0); |
| if (error) { |
| *vpp = NULL; |
| return error; |
| } |
| |
| if (ip == NULL) { |
| *vpp = NULL; |
| return XFS_ERROR(EIO); |
| } |
| |
| if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) { |
| xfs_iput_new(ip, XFS_ILOCK_SHARED); |
| *vpp = NULL; |
| return XFS_ERROR(ENOENT); |
| } |
| |
| *vpp = XFS_ITOV(ip); |
| xfs_iunlock(ip, XFS_ILOCK_SHARED); |
| return 0; |
| } |
| |
| |
| #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
| #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ |
| #define MNTOPT_LOGDEV "logdev" /* log device */ |
| #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ |
| #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ |
| #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ |
| #define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */ |
| #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
| #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ |
| #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ |
| #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ |
| #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ |
| #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ |
| #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ |
| #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ |
| #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ |
| #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ |
| #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_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 */ |
| |
| STATIC unsigned long |
| suffix_strtoul(const char *cp, char **endp, unsigned int base) |
| { |
| int last, shift_left_factor = 0; |
| char *value = (char *)cp; |
| |
| last = strlen(value) - 1; |
| if (value[last] == 'K' || value[last] == 'k') { |
| shift_left_factor = 10; |
| value[last] = '\0'; |
| } |
| if (value[last] == 'M' || value[last] == 'm') { |
| shift_left_factor = 20; |
| value[last] = '\0'; |
| } |
| if (value[last] == 'G' || value[last] == 'g') { |
| shift_left_factor = 30; |
| value[last] = '\0'; |
| } |
| |
| return simple_strtoul(cp, endp, base) << shift_left_factor; |
| } |
| |
| STATIC int |
| xfs_parseargs( |
| struct bhv_desc *bhv, |
| char *options, |
| struct xfs_mount_args *args, |
| int update) |
| { |
| struct vfs *vfsp = bhvtovfs(bhv); |
| char *this_char, *value, *eov; |
| int dsunit, dswidth, vol_dsunit, vol_dswidth; |
| int iosize; |
| |
| #if 0 /* XXX: off by default, until some remaining issues ironed out */ |
| args->flags |= XFSMNT_IDELETE; /* default to on */ |
| #endif |
| |
| if (!options) |
| return 0; |
| |
| iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0; |
| |
| while ((this_char = strsep(&options, ",")) != NULL) { |
| if (!*this_char) |
| continue; |
| if ((value = strchr(this_char, '=')) != NULL) |
| *value++ = 0; |
| |
| if (!strcmp(this_char, MNTOPT_LOGBUFS)) { |
| if (!value || !*value) { |
| printk("XFS: %s option requires an argument\n", |
| this_char); |
| return EINVAL; |
| } |
| args->logbufs = simple_strtoul(value, &eov, 10); |
| } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
| if (!value || !*value) { |
| printk("XFS: %s option requires an argument\n", |
| this_char); |
| return EINVAL; |
| } |
| args->logbufsize = suffix_strtoul(value, &eov, 10); |
| } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
| if (!value || !*value) { |
| printk("XFS: %s option requires an argument\n", |
| this_char); |
| return EINVAL; |
| } |
| strncpy(args->logname, value, MAXNAMELEN); |
| } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
| if (!value || !*value) { |
| printk("XFS: %s option requires an argument\n", |
| this_char); |
| return EINVAL; |
| } |
| strncpy(args->mtpt, value, MAXNAMELEN); |
| } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
| if (!value || !*value) { |
| printk("XFS: %s option requires an argument\n", |
| this_char); |
| return EINVAL; |
| } |
| strncpy(args->rtname, value, MAXNAMELEN); |
| } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
| if (!value || !*value) { |
| printk("XFS: %s option requires an argument\n", |
| this_char); |
| return EINVAL; |
| } |
| iosize = simple_strtoul(value, &eov, 10); |
| args->flags |= XFSMNT_IOSIZE; |
| args->iosizelog = (uint8_t) iosize; |
| } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
| if (!value || !*value) { |
| printk("XFS: %s option requires an argument\n", |
| this_char); |
| return EINVAL; |
| } |
| iosize = suffix_strtoul(value, &eov, 10); |
| args->flags |= XFSMNT_IOSIZE; |
| args->iosizelog = ffs(iosize) - 1; |
| } else if (!strcmp(this_char, MNTOPT_IHASHSIZE)) { |
| if (!value || !*value) { |
| printk("XFS: %s option requires an argument\n", |
| this_char); |
| return EINVAL; |
| } |
| args->flags |= XFSMNT_IHASHSIZE; |
| args->ihashsize = simple_strtoul(value, &eov, 10); |
| } else if (!strcmp(this_char, MNTOPT_GRPID) || |
| !strcmp(this_char, MNTOPT_BSDGROUPS)) { |
| vfsp->vfs_flag |= VFS_GRPID; |
| } else if (!strcmp(this_char, MNTOPT_NOGRPID) || |
| !strcmp(this_char, MNTOPT_SYSVGROUPS)) { |
| vfsp->vfs_flag &= ~VFS_GRPID; |
| } else if (!strcmp(this_char, MNTOPT_WSYNC)) { |
| args->flags |= XFSMNT_WSYNC; |
| } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) { |
| args->flags |= XFSMNT_OSYNCISOSYNC; |
| } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
| args->flags |= XFSMNT_NORECOVERY; |
| } else if (!strcmp(this_char, MNTOPT_INO64)) { |
| args->flags |= XFSMNT_INO64; |
| #if !XFS_BIG_INUMS |
| printk("XFS: %s option not allowed on this system\n", |
| this_char); |
| return EINVAL; |
| #endif |
| } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
| args->flags |= XFSMNT_NOALIGN; |
| } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
| args->flags |= XFSMNT_SWALLOC; |
| } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
| if (!value || !*value) { |
| printk("XFS: %s option requires an argument\n", |
| this_char); |
| return EINVAL; |
| } |
| dsunit = simple_strtoul(value, &eov, 10); |
| } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { |
| if (!value || !*value) { |
| printk("XFS: %s option requires an argument\n", |
| this_char); |
| return EINVAL; |
| } |
| dswidth = simple_strtoul(value, &eov, 10); |
| } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { |
| args->flags &= ~XFSMNT_32BITINODES; |
| #if !XFS_BIG_INUMS |
| printk("XFS: %s option not allowed on this system\n", |
| this_char); |
| return EINVAL; |
| #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_IKEEP)) { |
| args->flags &= ~XFSMNT_IDELETE; |
| } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
| args->flags |= XFSMNT_IDELETE; |
| } else if (!strcmp(this_char, "osyncisdsync")) { |
| /* no-op, this is now the default */ |
| printk("XFS: osyncisdsync is now the default, option is deprecated.\n"); |
| } else if (!strcmp(this_char, "irixsgid")) { |
| printk("XFS: irixsgid is now a sysctl(2) variable, option is deprecated.\n"); |
| } else { |
| printk("XFS: unknown mount option [%s].\n", this_char); |
| return EINVAL; |
| } |
| } |
| |
| if (args->flags & XFSMNT_NORECOVERY) { |
| if ((vfsp->vfs_flag & VFS_RDONLY) == 0) { |
| printk("XFS: no-recovery mounts must be read-only.\n"); |
| return EINVAL; |
| } |
| } |
| |
| if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) { |
| printk( |
| "XFS: sunit and swidth options incompatible with the noalign option\n"); |
| return EINVAL; |
| } |
| |
| if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
| printk("XFS: sunit and swidth must be specified together\n"); |
| return EINVAL; |
| } |
| |
| if (dsunit && (dswidth % dsunit != 0)) { |
| printk( |
| "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)\n", |
| dswidth, dsunit); |
| return EINVAL; |
| } |
| |
| if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) { |
| if (dsunit) { |
| args->sunit = dsunit; |
| args->flags |= XFSMNT_RETERR; |
| } else { |
| args->sunit = vol_dsunit; |
| } |
| dswidth ? (args->swidth = dswidth) : |
| (args->swidth = vol_dswidth); |
| } else { |
| args->sunit = args->swidth = 0; |
| } |
| |
| return 0; |
| } |
| |
| STATIC int |
| xfs_showargs( |
| struct bhv_desc *bhv, |
| struct seq_file *m) |
| { |
| static struct proc_xfs_info { |
| int flag; |
| char *str; |
| } xfs_info[] = { |
| /* the few simple ones we can get from the mount struct */ |
| { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
| { XFS_MOUNT_INO64, "," MNTOPT_INO64 }, |
| { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
| { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, |
| { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, |
| { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, |
| { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC }, |
| { XFS_MOUNT_NOLOGFLUSH, "," MNTOPT_NOLOGFLUSH }, |
| { XFS_MOUNT_IDELETE, "," MNTOPT_NOIKEEP }, |
| { 0, NULL } |
| }; |
| struct proc_xfs_info *xfs_infop; |
| struct xfs_mount *mp = XFS_BHVTOM(bhv); |
| struct vfs *vfsp = XFS_MTOVFS(mp); |
| |
| for (xfs_infop = xfs_info; xfs_infop->flag; xfs_infop++) { |
| if (mp->m_flags & xfs_infop->flag) |
| seq_puts(m, xfs_infop->str); |
| } |
| |
| if (mp->m_flags & XFS_MOUNT_IHASHSIZE) |
| 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); |
| |
| 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); |
| |
| 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_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_dalign > 0) |
| seq_printf(m, "," MNTOPT_SUNIT "=%d", |
| (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); |
| |
| if (mp->m_swidth > 0) |
| seq_printf(m, "," MNTOPT_SWIDTH "=%d", |
| (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); |
| |
| if (!(mp->m_flags & XFS_MOUNT_32BITINOOPT)) |
| seq_printf(m, "," MNTOPT_64BITINODE); |
| |
| if (vfsp->vfs_flag & VFS_GRPID) |
| seq_printf(m, "," MNTOPT_GRPID); |
| |
| return 0; |
| } |
| |
| STATIC void |
| xfs_freeze( |
| bhv_desc_t *bdp) |
| { |
| xfs_mount_t *mp = XFS_BHVTOM(bdp); |
| |
| while (atomic_read(&mp->m_active_trans) > 0) |
| delay(100); |
| |
| /* Push the superblock and write an unmount record */ |
| xfs_log_unmount_write(mp); |
| xfs_unmountfs_writesb(mp); |
| } |
| |
| |
| vfsops_t xfs_vfsops = { |
| BHV_IDENTITY_INIT(VFS_BHV_XFS,VFS_POSITION_XFS), |
| .vfs_parseargs = xfs_parseargs, |
| .vfs_showargs = xfs_showargs, |
| .vfs_mount = xfs_mount, |
| .vfs_unmount = xfs_unmount, |
| .vfs_mntupdate = xfs_mntupdate, |
| .vfs_root = xfs_root, |
| .vfs_statvfs = xfs_statvfs, |
| .vfs_sync = xfs_sync, |
| .vfs_vget = xfs_vget, |
| .vfs_dmapiops = (vfs_dmapiops_t)fs_nosys, |
| .vfs_quotactl = (vfs_quotactl_t)fs_nosys, |
| .vfs_init_vnode = xfs_initialize_vnode, |
| .vfs_force_shutdown = xfs_do_force_shutdown, |
| .vfs_freeze = xfs_freeze, |
| }; |