Merge to Fedora kernel-2.6.18-1.2224_FC5 patched with stable patch-2.6.18.1-vs2.0...
[linux-2.6.git] / fs / xfs / linux-2.6 / xfs_super.c
index 4a79c7f..49c220d 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2005 Silicon Graphics, Inc.
+ * Copyright (c) 2000-2006 Silicon Graphics, Inc.
  * All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or
@@ -23,7 +23,6 @@
 #include "xfs_trans.h"
 #include "xfs_sb.h"
 #include "xfs_ag.h"
-#include "xfs_dir.h"
 #include "xfs_dir2.h"
 #include "xfs_alloc.h"
 #include "xfs_dmapi.h"
@@ -32,7 +31,6 @@
 #include "xfs_bmap_btree.h"
 #include "xfs_alloc_btree.h"
 #include "xfs_ialloc_btree.h"
-#include "xfs_dir_sf.h"
 #include "xfs_dir2_sf.h"
 #include "xfs_attr_sf.h"
 #include "xfs_dinode.h"
@@ -151,7 +149,7 @@ xfs_set_inodeops(
 STATIC __inline__ void
 xfs_revalidate_inode(
        xfs_mount_t             *mp,
-       vnode_t                 *vp,
+       bhv_vnode_t             *vp,
        xfs_inode_t             *ip)
 {
        struct inode            *inode = vn_to_inode(vp);
@@ -174,7 +172,6 @@ xfs_revalidate_inode(
                break;
        }
 
-       inode->i_blksize = xfs_preferred_iosize(mp);
        inode->i_generation = ip->i_d.di_gen;
        i_size_write(inode, ip->i_d.di_size);
        inode->i_blocks =
@@ -215,7 +212,7 @@ xfs_revalidate_inode(
 void
 xfs_initialize_vnode(
        bhv_desc_t              *bdp,
-       vnode_t                 *vp,
+       bhv_vnode_t             *vp,
        bhv_desc_t              *inode_bhv,
        int                     unlock)
 {
@@ -325,6 +322,13 @@ xfs_mountfs_check_barriers(xfs_mount_t *mp)
                return;
        }
 
+       if (xfs_readonly_buftarg(mp->m_ddev_targp)) {
+               xfs_fs_cmn_err(CE_NOTE, mp,
+                 "Disabling barriers, underlying device is readonly");
+               mp->m_flags &= ~XFS_MOUNT_BARRIER;
+               return;
+       }
+
        error = xfs_barrier_test(mp);
        if (error) {
                xfs_fs_cmn_err(CE_NOTE, mp,
@@ -345,7 +349,7 @@ STATIC struct inode *
 xfs_fs_alloc_inode(
        struct super_block      *sb)
 {
-       vnode_t                 *vp;
+       bhv_vnode_t             *vp;
 
        vp = kmem_zone_alloc(xfs_vnode_zone, KM_SLEEP);
        if (unlikely(!vp))
@@ -368,13 +372,13 @@ xfs_fs_inode_init_once(
 {
        if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
                      SLAB_CTOR_CONSTRUCTOR)
-               inode_init_once(vn_to_inode((vnode_t *)vnode));
+               inode_init_once(vn_to_inode((bhv_vnode_t *)vnode));
 }
 
 STATIC int
 xfs_init_zones(void)
 {
-       xfs_vnode_zone = kmem_zone_init_flags(sizeof(vnode_t), "xfs_vnode_t",
+       xfs_vnode_zone = kmem_zone_init_flags(sizeof(bhv_vnode_t), "xfs_vnode",
                                        KM_ZONE_HWALIGN | KM_ZONE_RECLAIM |
                                        KM_ZONE_SPREAD,
                                        xfs_fs_inode_init_once);
@@ -418,22 +422,17 @@ xfs_fs_write_inode(
        struct inode            *inode,
        int                     sync)
 {
-       vnode_t                 *vp = vn_from_inode(inode);
+       bhv_vnode_t             *vp = vn_from_inode(inode);
        int                     error = 0, flags = FLUSH_INODE;
 
        if (vp) {
                vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
                if (sync)
                        flags |= FLUSH_SYNC;
-               VOP_IFLUSH(vp, flags, error);
-               if (error == EAGAIN) {
-                       if (sync)
-                               VOP_IFLUSH(vp, flags | FLUSH_LOG, error);
-                       else
-                               error = 0;
-               }
+               error = bhv_vop_iflush(vp, flags);
+               if (error == EAGAIN)
+                       error = sync? bhv_vop_iflush(vp, flags | FLUSH_LOG) : 0;
        }
-
        return -error;
 }
 
@@ -441,8 +440,7 @@ STATIC void
 xfs_fs_clear_inode(
        struct inode            *inode)
 {
-       vnode_t                 *vp = vn_from_inode(inode);
-       int                     error, cache;
+       bhv_vnode_t             *vp = vn_from_inode(inode);
 
        vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
 
@@ -455,20 +453,18 @@ xfs_fs_clear_inode(
         * This can happen because xfs_iget_core calls xfs_idestroy if we
         * find an inode with di_mode == 0 but without IGET_CREATE set.
         */
-       if (vp->v_fbhv)
-               VOP_INACTIVE(vp, NULL, cache);
+       if (VNHEAD(vp))
+               bhv_vop_inactive(vp, NULL);
 
        VN_LOCK(vp);
        vp->v_flag &= ~VMODIFIED;
        VN_UNLOCK(vp, 0);
 
-       if (vp->v_fbhv) {
-               VOP_RECLAIM(vp, error);
-               if (error)
-                       panic("vn_purge: cannot reclaim");
-       }
+       if (VNHEAD(vp))
+               if (bhv_vop_reclaim(vp))
+                       panic("%s: cannot reclaim 0x%p\n", __FUNCTION__, vp);
 
-       ASSERT(vp->v_fbhv == NULL);
+       ASSERT(VNHEAD(vp) == NULL);
 
 #ifdef XFS_VNODE_TRACE
        ktrace_free(vp->v_trace);
@@ -484,13 +480,13 @@ xfs_fs_clear_inode(
  */
 STATIC void
 xfs_syncd_queue_work(
-       struct vfs      *vfs,
+       struct bhv_vfs  *vfs,
        void            *data,
-       void            (*syncer)(vfs_t *, void *))
+       void            (*syncer)(bhv_vfs_t *, void *))
 {
-       vfs_sync_work_t *work;
+       struct bhv_vfs_sync_work *work;
 
-       work = kmem_alloc(sizeof(struct vfs_sync_work), KM_SLEEP);
+       work = kmem_alloc(sizeof(struct bhv_vfs_sync_work), KM_SLEEP);
        INIT_LIST_HEAD(&work->w_list);
        work->w_syncer = syncer;
        work->w_data = data;
@@ -509,7 +505,7 @@ xfs_syncd_queue_work(
  */
 STATIC void
 xfs_flush_inode_work(
-       vfs_t           *vfs,
+       bhv_vfs_t       *vfs,
        void            *inode)
 {
        filemap_flush(((struct inode *)inode)->i_mapping);
@@ -521,7 +517,7 @@ xfs_flush_inode(
        xfs_inode_t     *ip)
 {
        struct inode    *inode = vn_to_inode(XFS_ITOV(ip));
-       struct vfs      *vfs = XFS_MTOVFS(ip->i_mount);
+       struct bhv_vfs  *vfs = XFS_MTOVFS(ip->i_mount);
 
        igrab(inode);
        xfs_syncd_queue_work(vfs, inode, xfs_flush_inode_work);
@@ -534,7 +530,7 @@ xfs_flush_inode(
  */
 STATIC void
 xfs_flush_device_work(
-       vfs_t           *vfs,
+       bhv_vfs_t       *vfs,
        void            *inode)
 {
        sync_blockdev(vfs->vfs_super->s_bdev);
@@ -546,7 +542,7 @@ xfs_flush_device(
        xfs_inode_t     *ip)
 {
        struct inode    *inode = vn_to_inode(XFS_ITOV(ip));
-       struct vfs      *vfs = XFS_MTOVFS(ip->i_mount);
+       struct bhv_vfs  *vfs = XFS_MTOVFS(ip->i_mount);
 
        igrab(inode);
        xfs_syncd_queue_work(vfs, inode, xfs_flush_device_work);
@@ -554,16 +550,16 @@ xfs_flush_device(
        xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC);
 }
 
-#define SYNCD_FLAGS    (SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR|SYNC_REFCACHE)
 STATIC void
 vfs_sync_worker(
-       vfs_t           *vfsp,
+       bhv_vfs_t       *vfsp,
        void            *unused)
 {
        int             error;
 
        if (!(vfsp->vfs_flag & VFS_RDONLY))
-               VFS_SYNC(vfsp, SYNCD_FLAGS, NULL, error);
+               error = bhv_vfs_sync(vfsp, SYNC_FSDATA | SYNC_BDFLUSH | \
+                                       SYNC_ATTR | SYNC_REFCACHE, NULL);
        vfsp->vfs_sync_seq++;
        wmb();
        wake_up(&vfsp->vfs_wait_single_sync_task);
@@ -574,8 +570,8 @@ xfssyncd(
        void                    *arg)
 {
        long                    timeleft;
-       vfs_t                   *vfsp = (vfs_t *) arg;
-       struct vfs_sync_work    *work, *n;
+       bhv_vfs_t               *vfsp = (bhv_vfs_t *) arg;
+       bhv_vfs_sync_work_t     *work, *n;
        LIST_HEAD               (tmp);
 
        timeleft = xfs_syncd_centisecs * msecs_to_jiffies(10);
@@ -609,7 +605,7 @@ xfssyncd(
                        list_del(&work->w_list);
                        if (work == &vfsp->vfs_sync_work)
                                continue;
-                       kmem_free(work, sizeof(struct vfs_sync_work));
+                       kmem_free(work, sizeof(struct bhv_vfs_sync_work));
                }
        }
 
@@ -618,7 +614,7 @@ xfssyncd(
 
 STATIC int
 xfs_fs_start_syncd(
-       vfs_t                   *vfsp)
+       bhv_vfs_t               *vfsp)
 {
        vfsp->vfs_sync_work.w_syncer = vfs_sync_worker;
        vfsp->vfs_sync_work.w_vfs = vfsp;
@@ -630,7 +626,7 @@ xfs_fs_start_syncd(
 
 STATIC void
 xfs_fs_stop_syncd(
-       vfs_t                   *vfsp)
+       bhv_vfs_t               *vfsp)
 {
        kthread_stop(vfsp->vfs_sync_task);
 }
@@ -639,35 +635,26 @@ STATIC void
 xfs_fs_put_super(
        struct super_block      *sb)
 {
-       vfs_t                   *vfsp = vfs_from_sb(sb);
+       bhv_vfs_t               *vfsp = vfs_from_sb(sb);
        int                     error;
 
        xfs_fs_stop_syncd(vfsp);
-       VFS_SYNC(vfsp, SYNC_ATTR|SYNC_DELWRI, NULL, error);
-       if (!error)
-               VFS_UNMOUNT(vfsp, 0, NULL, error);
+       bhv_vfs_sync(vfsp, SYNC_ATTR | SYNC_DELWRI, NULL);
+       error = bhv_vfs_unmount(vfsp, 0, NULL);
        if (error) {
-               printk("XFS unmount got error %d\n", error);
-               printk("%s: vfsp/0x%p left dangling!\n", __FUNCTION__, vfsp);
-               return;
+               printk("XFS: unmount got error=%d\n", error);
+               printk("%s: vfs=0x%p left dangling!\n", __FUNCTION__, vfsp);
+       } else {
+               vfs_deallocate(vfsp);
        }
-
-       vfs_deallocate(vfsp);
 }
 
 STATIC void
 xfs_fs_write_super(
        struct super_block      *sb)
 {
-       vfs_t                   *vfsp = vfs_from_sb(sb);
-       int                     error;
-
-       if (sb->s_flags & MS_RDONLY) {
-               sb->s_dirt = 0; /* paranoia */
-               return;
-       }
-       /* Push the log and superblock a little */
-       VFS_SYNC(vfsp, SYNC_FSDATA, NULL, error);
+       if (!(sb->s_flags & MS_RDONLY))
+               bhv_vfs_sync(vfs_from_sb(sb), SYNC_FSDATA, NULL);
        sb->s_dirt = 0;
 }
 
@@ -676,16 +663,16 @@ xfs_fs_sync_super(
        struct super_block      *sb,
        int                     wait)
 {
-       vfs_t           *vfsp = vfs_from_sb(sb);
-       int             error;
-       int             flags = SYNC_FSDATA;
+       bhv_vfs_t               *vfsp = vfs_from_sb(sb);
+       int                     error;
+       int                     flags;
 
        if (unlikely(sb->s_frozen == SB_FREEZE_WRITE))
                flags = SYNC_QUIESCE;
        else
                flags = SYNC_FSDATA | (wait ? SYNC_WAIT : 0);
 
-       VFS_SYNC(vfsp, flags, NULL, error);
+       error = bhv_vfs_sync(vfsp, flags, NULL);
        sb->s_dirt = 0;
 
        if (unlikely(laptop_mode)) {
@@ -712,14 +699,11 @@ xfs_fs_sync_super(
 
 STATIC int
 xfs_fs_statfs(
-       struct super_block      *sb,
+       struct dentry           *dentry,
        struct kstatfs          *statp)
 {
-       vfs_t                   *vfsp = vfs_from_sb(sb);
-       int                     error;
-
-       VFS_STATVFS(vfsp, statp, NULL, error);
-       return -error;
+       return -bhv_vfs_statvfs(vfs_from_sb(dentry->d_sb), statp,
+                               vn_from_inode(dentry->d_inode));
 }
 
 STATIC int
@@ -728,11 +712,11 @@ xfs_fs_remount(
        int                     *flags,
        char                    *options)
 {
-       vfs_t                   *vfsp = vfs_from_sb(sb);
+       bhv_vfs_t               *vfsp = vfs_from_sb(sb);
        struct xfs_mount_args   *args = xfs_args_allocate(sb, 0);
        int                     error;
 
-       VFS_PARSEARGS(vfsp, options, args, 1, error);
+       error = bhv_vfs_parseargs(vfsp, options, args, 1);
        if ((args->flags2 & XFSMNT2_TAGXID) &&
                !(sb->s_flags & MS_TAGXID)) {
                printk("XFS: %s: tagxid not permitted on remount.\n",
@@ -740,7 +724,7 @@ xfs_fs_remount(
                error = EINVAL;
        }
        if (!error)
-               VFS_MNTUPDATE(vfsp, flags, args, error);
+               error = bhv_vfs_mntupdate(vfsp, flags, args);
        kmem_free(args, sizeof(*args));
        return -error;
 }
@@ -749,7 +733,7 @@ STATIC void
 xfs_fs_lockfs(
        struct super_block      *sb)
 {
-       VFS_FREEZE(vfs_from_sb(sb));
+       bhv_vfs_freeze(vfs_from_sb(sb));
 }
 
 STATIC int
@@ -757,11 +741,7 @@ xfs_fs_show_options(
        struct seq_file         *m,
        struct vfsmount         *mnt)
 {
-       struct vfs              *vfsp = vfs_from_sb(mnt->mnt_sb);
-       int                     error;
-
-       VFS_SHOWARGS(vfsp, m, error);
-       return error;
+       return -bhv_vfs_showargs(vfs_from_sb(mnt->mnt_sb), m);
 }
 
 STATIC int
@@ -769,11 +749,7 @@ xfs_fs_quotasync(
        struct super_block      *sb,
        int                     type)
 {
-       struct vfs              *vfsp = vfs_from_sb(sb);
-       int                     error;
-
-       VFS_QUOTACTL(vfsp, Q_XQUOTASYNC, 0, (caddr_t)NULL, error);
-       return -error;
+       return -bhv_vfs_quotactl(vfs_from_sb(sb), Q_XQUOTASYNC, 0, NULL);
 }
 
 STATIC int
@@ -781,11 +757,7 @@ xfs_fs_getxstate(
        struct super_block      *sb,
        struct fs_quota_stat    *fqs)
 {
-       struct vfs              *vfsp = vfs_from_sb(sb);
-       int                     error;
-
-       VFS_QUOTACTL(vfsp, Q_XGETQSTAT, 0, (caddr_t)fqs, error);
-       return -error;
+       return -bhv_vfs_quotactl(vfs_from_sb(sb), Q_XGETQSTAT, 0, (caddr_t)fqs);
 }
 
 STATIC int
@@ -794,11 +766,7 @@ xfs_fs_setxstate(
        unsigned int            flags,
        int                     op)
 {
-       struct vfs              *vfsp = vfs_from_sb(sb);
-       int                     error;
-
-       VFS_QUOTACTL(vfsp, op, 0, (caddr_t)&flags, error);
-       return -error;
+       return -bhv_vfs_quotactl(vfs_from_sb(sb), op, 0, (caddr_t)&flags);
 }
 
 STATIC int
@@ -808,13 +776,10 @@ xfs_fs_getxquota(
        qid_t                   id,
        struct fs_disk_quota    *fdq)
 {
-       struct vfs              *vfsp = vfs_from_sb(sb);
-       int                     error, getmode;
-
-       getmode = (type == USRQUOTA) ? Q_XGETQUOTA :
-                ((type == GRPQUOTA) ? Q_XGETGQUOTA : Q_XGETPQUOTA);
-       VFS_QUOTACTL(vfsp, getmode, id, (caddr_t)fdq, error);
-       return -error;
+       return -bhv_vfs_quotactl(vfs_from_sb(sb),
+                                (type == USRQUOTA) ? Q_XGETQUOTA :
+                                 ((type == GRPQUOTA) ? Q_XGETGQUOTA :
+                                  Q_XGETPQUOTA), id, (caddr_t)fdq);
 }
 
 STATIC int
@@ -824,13 +789,10 @@ xfs_fs_setxquota(
        qid_t                   id,
        struct fs_disk_quota    *fdq)
 {
-       struct vfs              *vfsp = vfs_from_sb(sb);
-       int                     error, setmode;
-
-       setmode = (type == USRQUOTA) ? Q_XSETQLIM :
-                ((type == GRPQUOTA) ? Q_XSETGQLIM : Q_XSETPQLIM);
-       VFS_QUOTACTL(vfsp, setmode, id, (caddr_t)fdq, error);
-       return -error;
+       return -bhv_vfs_quotactl(vfs_from_sb(sb),
+                                (type == USRQUOTA) ? Q_XSETQLIM :
+                                 ((type == GRPQUOTA) ? Q_XSETGQLIM :
+                                  Q_XSETPQLIM), id, (caddr_t)fdq);
 }
 
 STATIC int
@@ -839,34 +801,32 @@ xfs_fs_fill_super(
        void                    *data,
        int                     silent)
 {
-       vnode_t                 *rootvp;
-       struct vfs              *vfsp = vfs_allocate(sb);
+       struct bhv_vnode        *rootvp;
+       struct bhv_vfs          *vfsp = vfs_allocate(sb);
        struct xfs_mount_args   *args = xfs_args_allocate(sb, silent);
        struct kstatfs          statvfs;
-       int                     error, error2;
+       int                     error;
 
        bhv_insert_all_vfsops(vfsp);
 
-       VFS_PARSEARGS(vfsp, (char *)data, args, 0, error);
+       error = bhv_vfs_parseargs(vfsp, (char *)data, args, 0);
        if (error) {
                bhv_remove_all_vfsops(vfsp, 1);
                goto fail_vfsop;
        }
 
        sb_min_blocksize(sb, BBSIZE);
-#ifdef CONFIG_XFS_EXPORT
        sb->s_export_op = &xfs_export_operations;
-#endif
        sb->s_qcop = &xfs_quotactl_operations;
        sb->s_op = &xfs_super_operations;
 
-       VFS_MOUNT(vfsp, args, NULL, error);
+       error = bhv_vfs_mount(vfsp, args, NULL);
        if (error) {
                bhv_remove_all_vfsops(vfsp, 1);
                goto fail_vfsop;
        }
 
-       VFS_STATVFS(vfsp, &statvfs, NULL, error);
+       error = bhv_vfs_statvfs(vfsp, &statvfs, NULL);
        if (error)
                goto fail_unmount;
 
@@ -878,7 +838,7 @@ xfs_fs_fill_super(
        sb->s_time_gran = 1;
        set_posix_acl_flag(sb);
 
-       VFS_ROOT(vfsp, &rootvp, error);
+       error = bhv_vfs_root(vfsp, &rootvp);
        if (error)
                goto fail_unmount;
 
@@ -907,7 +867,7 @@ fail_vnrele:
        }
 
 fail_unmount:
-       VFS_UNMOUNT(vfsp, 0, NULL, error2);
+       bhv_vfs_unmount(vfsp, 0, NULL);
 
 fail_vfsop:
        vfs_deallocate(vfsp);
@@ -915,14 +875,16 @@ fail_vfsop:
        return -error;
 }
 
-STATIC struct super_block *
+STATIC int
 xfs_fs_get_sb(
        struct file_system_type *fs_type,
        int                     flags,
        const char              *dev_name,
-       void                    *data)
+       void                    *data,
+       struct vfsmount         *mnt)
 {
-       return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super);
+       return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super,
+                          mnt);
 }
 
 STATIC struct super_operations xfs_super_operations = {