Merge branch 'master' of github.com:davem330/net

Conflicts:
	MAINTAINERS
	drivers/net/Kconfig
	drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
	drivers/net/ethernet/broadcom/tg3.c
	drivers/net/wireless/iwlwifi/iwl-pci.c
	drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c
	drivers/net/wireless/rt2x00/rt2800usb.c
	drivers/net/wireless/wl12xx/main.c

1 files changed, 1218 insertions, 0 deletions

diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
new file mode 100644
index 000000000000..673704fab748
--- /dev/null
+++ b/fs/xfs/xfs_iops.c
@@ -0,0 +1,1218 @@
+/*
+ * 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 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.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include "xfs.h"
+#include "xfs_fs.h"
+#include "xfs_acl.h"
+#include "xfs_bit.h"
+#include "xfs_log.h"
+#include "xfs_inum.h"
+#include "xfs_trans.h"
+#include "xfs_sb.h"
+#include "xfs_ag.h"
+#include "xfs_alloc.h"
+#include "xfs_quota.h"
+#include "xfs_mount.h"
+#include "xfs_bmap_btree.h"
+#include "xfs_dinode.h"
+#include "xfs_inode.h"
+#include "xfs_bmap.h"
+#include "xfs_rtalloc.h"
+#include "xfs_error.h"
+#include "xfs_itable.h"
+#include "xfs_rw.h"
+#include "xfs_attr.h"
+#include "xfs_buf_item.h"
+#include "xfs_utils.h"
+#include "xfs_vnodeops.h"
+#include "xfs_inode_item.h"
+#include "xfs_trace.h"
+
+#include <linux/capability.h>
+#include <linux/xattr.h>
+#include <linux/namei.h>
+#include <linux/posix_acl.h>
+#include <linux/security.h>
+#include <linux/fiemap.h>
+#include <linux/slab.h>
+
+/*
+ * Bring the timestamps in the XFS inode uptodate.
+ *
+ * Used before writing the inode to disk.
+ */
+void
+xfs_synchronize_times(
+        xfs_inode_t     *ip)
+{
+        struct inode    *inode = VFS_I(ip);
+
+        ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec;
+        ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec;
+        ip->i_d.di_ctime.t_sec = (__int32_t)inode->i_ctime.tv_sec;
+        ip->i_d.di_ctime.t_nsec = (__int32_t)inode->i_ctime.tv_nsec;
+        ip->i_d.di_mtime.t_sec = (__int32_t)inode->i_mtime.tv_sec;
+        ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec;
+}
+
+/*
+ * If the linux inode is valid, mark it dirty, else mark the dirty state
+ * in the XFS inode to make sure we pick it up when reclaiming the inode.
+ */
+void
+xfs_mark_inode_dirty_sync(
+        xfs_inode_t     *ip)
+{
+        struct inode    *inode = VFS_I(ip);
+
+        if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
+                mark_inode_dirty_sync(inode);
+        else {
+                barrier();
+                ip->i_update_core = 1;
+        }
+}
+
+void
+xfs_mark_inode_dirty(
+        xfs_inode_t     *ip)
+{
+        struct inode    *inode = VFS_I(ip);
+
+        if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
+                mark_inode_dirty(inode);
+        else {
+                barrier();
+                ip->i_update_core = 1;
+        }
+
+}
+
+/*
+ * Hook in SELinux.  This is not quite correct yet, what we really need
+ * here (as we do for default ACLs) is a mechanism by which creation of
+ * these attrs can be journalled at inode creation time (along with the
+ * inode, of course, such that log replay can't cause these to be lost).
+ */
+STATIC int
+xfs_init_security(
+        struct inode    *inode,
+        struct inode    *dir,
+        const struct qstr *qstr)
+{
+        struct xfs_inode *ip = XFS_I(inode);
+        size_t          length;
+        void            *value;
+        unsigned char   *name;
+        int             error;
+
+        error = security_inode_init_security(inode, dir, qstr, (char **)&name,
+                                             &value, &length);
+        if (error) {
+                if (error == -EOPNOTSUPP)
+                        return 0;
+                return -error;
+        }
+
+        error = xfs_attr_set(ip, name, value, length, ATTR_SECURE);
+
+        kfree(name);
+        kfree(value);
+        return error;
+}
+
+static void
+xfs_dentry_to_name(
+        struct xfs_name *namep,
+        struct dentry   *dentry)
+{
+        namep->name = dentry->d_name.name;
+        namep->len = dentry->d_name.len;
+}
+
+STATIC void
+xfs_cleanup_inode(
+        struct inode    *dir,
+        struct inode    *inode,
+        struct dentry   *dentry)
+{
+        struct xfs_name teardown;
+
+        /* Oh, the horror.
+         * If we can't add the ACL or we fail in
+         * xfs_init_security we must back out.
+         * ENOSPC can hit here, among other things.
+         */
+        xfs_dentry_to_name(&teardown, dentry);
+
+        xfs_remove(XFS_I(dir), &teardown, XFS_I(inode));
+        iput(inode);
+}
+
+STATIC int
+xfs_vn_mknod(
+        struct inode    *dir,
+        struct dentry   *dentry,
+        int             mode,
+        dev_t           rdev)
+{
+        struct inode    *inode;
+        struct xfs_inode *ip = NULL;
+        struct posix_acl *default_acl = NULL;
+        struct xfs_name name;
+        int             error;
+
+        /*
+         * Irix uses Missed'em'V split, but doesn't want to see
+         * the upper 5 bits of (14bit) major.
+         */
+        if (S_ISCHR(mode) || S_ISBLK(mode)) {
+                if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff))
+                        return -EINVAL;
+                rdev = sysv_encode_dev(rdev);
+        } else {
+                rdev = 0;
+        }
+
+        if (IS_POSIXACL(dir)) {
+                default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT);
+                if (IS_ERR(default_acl))
+                        return PTR_ERR(default_acl);
+
+                if (!default_acl)
+                        mode &= ~current_umask();
+        }
+
+        xfs_dentry_to_name(&name, dentry);
+        error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip);
+        if (unlikely(error))
+                goto out_free_acl;
+
+        inode = VFS_I(ip);
+
+        error = xfs_init_security(inode, dir, &dentry->d_name);
+        if (unlikely(error))
+                goto out_cleanup_inode;
+
+        if (default_acl) {
+                error = -xfs_inherit_acl(inode, default_acl);
+                default_acl = NULL;
+                if (unlikely(error))
+                        goto out_cleanup_inode;
+        }
+
+
+        d_instantiate(dentry, inode);
+        return -error;
+
+ out_cleanup_inode:
+        xfs_cleanup_inode(dir, inode, dentry);
+ out_free_acl:
+        posix_acl_release(default_acl);
+        return -error;
+}
+
+STATIC int
+xfs_vn_create(
+        struct inode    *dir,
+        struct dentry   *dentry,
+        int             mode,
+        struct nameidata *nd)
+{
+        return xfs_vn_mknod(dir, dentry, mode, 0);
+}
+
+STATIC int
+xfs_vn_mkdir(
+        struct inode    *dir,
+        struct dentry   *dentry,
+        int             mode)
+{
+        return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0);
+}
+
+STATIC struct dentry *
+xfs_vn_lookup(
+        struct inode    *dir,
+        struct dentry   *dentry,
+        struct nameidata *nd)
+{
+        struct xfs_inode *cip;
+        struct xfs_name name;
+        int             error;
+
+        if (dentry->d_name.len >= MAXNAMELEN)
+                return ERR_PTR(-ENAMETOOLONG);
+
+        xfs_dentry_to_name(&name, dentry);
+        error = xfs_lookup(XFS_I(dir), &name, &cip, NULL);
+        if (unlikely(error)) {
+                if (unlikely(error != ENOENT))
+                        return ERR_PTR(-error);
+                d_add(dentry, NULL);
+                return NULL;
+        }
+
+        return d_splice_alias(VFS_I(cip), dentry);
+}
+
+STATIC struct dentry *
+xfs_vn_ci_lookup(
+        struct inode    *dir,
+        struct dentry   *dentry,
+        struct nameidata *nd)
+{
+        struct xfs_inode *ip;
+        struct xfs_name xname;
+        struct xfs_name ci_name;
+        struct qstr     dname;
+        int             error;
+
+        if (dentry->d_name.len >= MAXNAMELEN)
+                return ERR_PTR(-ENAMETOOLONG);
+
+        xfs_dentry_to_name(&xname, dentry);
+        error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name);
+        if (unlikely(error)) {
+                if (unlikely(error != ENOENT))
+                        return ERR_PTR(-error);
+                /*
+                 * call d_add(dentry, NULL) here when d_drop_negative_children
+                 * is called in xfs_vn_mknod (ie. allow negative dentries
+                 * with CI filesystems).
+                 */
+                return NULL;
+        }
+
+        /* if exact match, just splice and exit */
+        if (!ci_name.name)
+                return d_splice_alias(VFS_I(ip), dentry);
+
+        /* else case-insensitive match... */
+        dname.name = ci_name.name;
+        dname.len = ci_name.len;
+        dentry = d_add_ci(dentry, VFS_I(ip), &dname);
+        kmem_free(ci_name.name);
+        return dentry;
+}
+
+STATIC int
+xfs_vn_link(
+        struct dentry   *old_dentry,
+        struct inode    *dir,
+        struct dentry   *dentry)
+{
+        struct inode    *inode = old_dentry->d_inode;
+        struct xfs_name name;
+        int             error;
+
+        xfs_dentry_to_name(&name, dentry);
+
+        error = xfs_link(XFS_I(dir), XFS_I(inode), &name);
+        if (unlikely(error))
+                return -error;
+
+        ihold(inode);
+        d_instantiate(dentry, inode);
+        return 0;
+}
+
+STATIC int
+xfs_vn_unlink(
+        struct inode    *dir,
+        struct dentry   *dentry)
+{
+        struct xfs_name name;
+        int             error;
+
+        xfs_dentry_to_name(&name, dentry);
+
+        error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode));
+        if (error)
+                return error;
+
+        /*
+         * With unlink, the VFS makes the dentry "negative": no inode,
+         * but still hashed. This is incompatible with case-insensitive
+         * mode, so invalidate (unhash) the dentry in CI-mode.
+         */
+        if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb))
+                d_invalidate(dentry);
+        return 0;
+}
+
+STATIC int
+xfs_vn_symlink(
+        struct inode    *dir,
+        struct dentry   *dentry,
+        const char      *symname)
+{
+        struct inode    *inode;
+        struct xfs_inode *cip = NULL;
+        struct xfs_name name;
+        int             error;
+        mode_t          mode;
+
+        mode = S_IFLNK |
+                (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO);
+        xfs_dentry_to_name(&name, dentry);
+
+        error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip);
+        if (unlikely(error))
+                goto out;
+
+        inode = VFS_I(cip);
+
+        error = xfs_init_security(inode, dir, &dentry->d_name);
+        if (unlikely(error))
+                goto out_cleanup_inode;
+
+        d_instantiate(dentry, inode);
+        return 0;
+
+ out_cleanup_inode:
+        xfs_cleanup_inode(dir, inode, dentry);
+ out:
+        return -error;
+}
+
+STATIC int
+xfs_vn_rename(
+        struct inode    *odir,
+        struct dentry   *odentry,
+        struct inode    *ndir,
+        struct dentry   *ndentry)
+{
+        struct inode    *new_inode = ndentry->d_inode;
+        struct xfs_name oname;
+        struct xfs_name nname;
+
+        xfs_dentry_to_name(&oname, odentry);
+        xfs_dentry_to_name(&nname, ndentry);
+
+        return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode),
+                           XFS_I(ndir), &nname, new_inode ?
+                                                XFS_I(new_inode) : NULL);
+}
+
+/*
+ * careful here - this function can get called recursively, so
+ * we need to be very careful about how much stack we use.
+ * uio is kmalloced for this reason...
+ */
+STATIC void *
+xfs_vn_follow_link(
+        struct dentry           *dentry,
+        struct nameidata        *nd)
+{
+        char                    *link;
+        int                     error = -ENOMEM;
+
+        link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
+        if (!link)
+                goto out_err;
+
+        error = -xfs_readlink(XFS_I(dentry->d_inode), link);
+        if (unlikely(error))
+                goto out_kfree;
+
+        nd_set_link(nd, link);
+        return NULL;
+
+ out_kfree:
+        kfree(link);
+ out_err:
+        nd_set_link(nd, ERR_PTR(error));
+        return NULL;
+}
+
+STATIC void
+xfs_vn_put_link(
+        struct dentry   *dentry,
+        struct nameidata *nd,
+        void            *p)
+{
+        char            *s = nd_get_link(nd);
+
+        if (!IS_ERR(s))
+                kfree(s);
+}
+
+STATIC int
+xfs_vn_getattr(
+        struct vfsmount         *mnt,
+        struct dentry           *dentry,
+        struct kstat            *stat)
+{
+        struct inode            *inode = dentry->d_inode;
+        struct xfs_inode        *ip = XFS_I(inode);
+        struct xfs_mount        *mp = ip->i_mount;
+
+        trace_xfs_getattr(ip);
+
+        if (XFS_FORCED_SHUTDOWN(mp))
+                return XFS_ERROR(EIO);
+
+        stat->size = XFS_ISIZE(ip);
+        stat->dev = inode->i_sb->s_dev;
+        stat->mode = ip->i_d.di_mode;
+        stat->nlink = ip->i_d.di_nlink;
+        stat->uid = ip->i_d.di_uid;
+        stat->gid = ip->i_d.di_gid;
+        stat->ino = ip->i_ino;
+        stat->atime = inode->i_atime;
+        stat->mtime = inode->i_mtime;
+        stat->ctime = inode->i_ctime;
+        stat->blocks =
+                XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
+
+
+        switch (inode->i_mode & S_IFMT) {
+        case S_IFBLK:
+        case S_IFCHR:
+                stat->blksize = BLKDEV_IOSIZE;
+                stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
+                                   sysv_minor(ip->i_df.if_u2.if_rdev));
+                break;
+        default:
+                if (XFS_IS_REALTIME_INODE(ip)) {
+                        /*
+                         * If the file blocks are being allocated from a
+                         * realtime volume, then return the inode's realtime
+                         * extent size or the realtime volume's extent size.
+                         */
+                        stat->blksize =
+                                xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog;
+                } else
+                        stat->blksize = xfs_preferred_iosize(mp);
+                stat->rdev = 0;
+                break;
+        }
+
+        return 0;
+}
+
+int
+xfs_setattr_nonsize(
+        struct xfs_inode        *ip,
+        struct iattr            *iattr,
+        int                     flags)
+{
+        xfs_mount_t             *mp = ip->i_mount;
+        struct inode            *inode = VFS_I(ip);
+        int                     mask = iattr->ia_valid;
+        xfs_trans_t             *tp;
+        int                     error;
+        uid_t                   uid = 0, iuid = 0;
+        gid_t                   gid = 0, igid = 0;
+        struct xfs_dquot        *udqp = NULL, *gdqp = NULL;
+        struct xfs_dquot        *olddquot1 = NULL, *olddquot2 = NULL;
+
+        trace_xfs_setattr(ip);
+
+        if (mp->m_flags & XFS_MOUNT_RDONLY)
+                return XFS_ERROR(EROFS);
+
+        if (XFS_FORCED_SHUTDOWN(mp))
+                return XFS_ERROR(EIO);
+
+        error = -inode_change_ok(inode, iattr);
+        if (error)
+                return XFS_ERROR(error);
+
+        ASSERT((mask & ATTR_SIZE) == 0);
+
+        /*
+         * If disk quotas is on, we make sure that the dquots do exist on disk,
+         * before we start any other transactions. Trying to do this later
+         * is messy. We don't care to take a readlock to look at the ids
+         * in inode here, because we can't hold it across the trans_reserve.
+         * If the IDs do change before we take the ilock, we're covered
+         * because the i_*dquot fields will get updated anyway.
+         */
+        if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) {
+                uint    qflags = 0;
+
+                if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) {
+                        uid = iattr->ia_uid;
+                        qflags |= XFS_QMOPT_UQUOTA;
+                } else {
+                        uid = ip->i_d.di_uid;
+                }
+                if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) {
+                        gid = iattr->ia_gid;
+                        qflags |= XFS_QMOPT_GQUOTA;
+                }  else {
+                        gid = ip->i_d.di_gid;
+                }
+
+                /*
+                 * We take a reference when we initialize udqp and gdqp,
+                 * so it is important that we never blindly double trip on
+                 * the same variable. See xfs_create() for an example.
+                 */
+                ASSERT(udqp == NULL);
+                ASSERT(gdqp == NULL);
+                error = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip),
+                                         qflags, &udqp, &gdqp);
+                if (error)
+                        return error;
+        }
+
+        tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
+        error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0);
+        if (error)
+                goto out_dqrele;
+
+        xfs_ilock(ip, XFS_ILOCK_EXCL);
+
+        /*
+         * Change file ownership.  Must be the owner or privileged.
+         */
+        if (mask & (ATTR_UID|ATTR_GID)) {
+                /*
+                 * These IDs could have changed since we last looked at them.
+                 * But, we're assured that if the ownership did change
+                 * while we didn't have the inode locked, inode's dquot(s)
+                 * would have changed also.
+                 */
+                iuid = ip->i_d.di_uid;
+                igid = ip->i_d.di_gid;
+                gid = (mask & ATTR_GID) ? iattr->ia_gid : igid;
+                uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid;
+
+                /*
+                 * Do a quota reservation only if uid/gid is actually
+                 * going to change.
+                 */
+                if (XFS_IS_QUOTA_RUNNING(mp) &&
+                    ((XFS_IS_UQUOTA_ON(mp) && iuid != uid) ||
+                     (XFS_IS_GQUOTA_ON(mp) && igid != gid))) {
+                        ASSERT(tp);
+                        error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp,
+                                                capable(CAP_FOWNER) ?
+                                                XFS_QMOPT_FORCE_RES : 0);
+                        if (error)      /* out of quota */
+                                goto out_trans_cancel;
+                }
+        }
+
+        xfs_trans_ijoin(tp, ip);
+
+        /*
+         * Change file ownership.  Must be the owner or privileged.
+         */
+        if (mask & (ATTR_UID|ATTR_GID)) {
+                /*
+                 * CAP_FSETID overrides the following restrictions:
+                 *
+                 * The set-user-ID and set-group-ID bits of a file will be
+                 * cleared upon successful return from chown()
+                 */
+                if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) &&
+                    !capable(CAP_FSETID))
+                        ip->i_d.di_mode &= ~(S_ISUID|S_ISGID);
+
+                /*
+                 * Change the ownerships and register quota modifications
+                 * in the transaction.
+                 */
+                if (iuid != uid) {
+                        if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) {
+                                ASSERT(mask & ATTR_UID);
+                                ASSERT(udqp);
+                                olddquot1 = xfs_qm_vop_chown(tp, ip,
+                                                        &ip->i_udquot, udqp);
+                        }
+                        ip->i_d.di_uid = uid;
+                        inode->i_uid = uid;
+                }
+                if (igid != gid) {
+                        if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) {
+                                ASSERT(!XFS_IS_PQUOTA_ON(mp));
+                                ASSERT(mask & ATTR_GID);
+                                ASSERT(gdqp);
+                                olddquot2 = xfs_qm_vop_chown(tp, ip,
+                                                        &ip->i_gdquot, gdqp);
+                        }
+                        ip->i_d.di_gid = gid;
+                        inode->i_gid = gid;
+                }
+        }
+
+        /*
+         * Change file access modes.
+         */
+        if (mask & ATTR_MODE) {
+                umode_t mode = iattr->ia_mode;
+
+                if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
+                        mode &= ~S_ISGID;
+
+                ip->i_d.di_mode &= S_IFMT;
+                ip->i_d.di_mode |= mode & ~S_IFMT;
+
+                inode->i_mode &= S_IFMT;
+                inode->i_mode |= mode & ~S_IFMT;
+        }
+
+        /*
+         * Change file access or modified times.
+         */
+        if (mask & ATTR_ATIME) {
+                inode->i_atime = iattr->ia_atime;
+                ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec;
+                ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec;
+                ip->i_update_core = 1;
+        }
+        if (mask & ATTR_CTIME) {
+                inode->i_ctime = iattr->ia_ctime;
+                ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec;
+                ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec;
+                ip->i_update_core = 1;
+        }
+        if (mask & ATTR_MTIME) {
+                inode->i_mtime = iattr->ia_mtime;
+                ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
+                ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
+                ip->i_update_core = 1;
+        }
+
+        xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+
+        XFS_STATS_INC(xs_ig_attrchg);
+
+        if (mp->m_flags & XFS_MOUNT_WSYNC)
+                xfs_trans_set_sync(tp);
+        error = xfs_trans_commit(tp, 0);
+
+        xfs_iunlock(ip, XFS_ILOCK_EXCL);
+
+        /*
+         * Release any dquot(s) the inode had kept before chown.
+         */
+        xfs_qm_dqrele(olddquot1);
+        xfs_qm_dqrele(olddquot2);
+        xfs_qm_dqrele(udqp);
+        xfs_qm_dqrele(gdqp);
+
+        if (error)
+                return XFS_ERROR(error);
+
+        /*
+         * XXX(hch): Updating the ACL entries is not atomic vs the i_mode
+         *           update.  We could avoid this with linked transactions
+         *           and passing down the transaction pointer all the way
+         *           to attr_set.  No previous user of the generic
+         *           Posix ACL code seems to care about this issue either.
+         */
+        if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) {
+                error = -xfs_acl_chmod(inode);
+                if (error)
+                        return XFS_ERROR(error);
+        }
+
+        return 0;
+
+out_trans_cancel:
+        xfs_trans_cancel(tp, 0);
+        xfs_iunlock(ip, XFS_ILOCK_EXCL);
+out_dqrele:
+        xfs_qm_dqrele(udqp);
+        xfs_qm_dqrele(gdqp);
+        return error;
+}
+
+/*
+ * Truncate file.  Must have write permission and not be a directory.
+ */
+int
+xfs_setattr_size(
+        struct xfs_inode        *ip,
+        struct iattr            *iattr,
+        int                     flags)
+{
+        struct xfs_mount        *mp = ip->i_mount;
+        struct inode            *inode = VFS_I(ip);
+        int                     mask = iattr->ia_valid;
+        struct xfs_trans        *tp;
+        int                     error;
+        uint                    lock_flags;
+        uint                    commit_flags = 0;
+
+        trace_xfs_setattr(ip);
+
+        if (mp->m_flags & XFS_MOUNT_RDONLY)
+                return XFS_ERROR(EROFS);
+
+        if (XFS_FORCED_SHUTDOWN(mp))
+                return XFS_ERROR(EIO);
+
+        error = -inode_change_ok(inode, iattr);
+        if (error)
+                return XFS_ERROR(error);
+
+        ASSERT(S_ISREG(ip->i_d.di_mode));
+        ASSERT((mask & (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET|
+                        ATTR_MTIME_SET|ATTR_KILL_SUID|ATTR_KILL_SGID|
+                        ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0);
+
+        lock_flags = XFS_ILOCK_EXCL;
+        if (!(flags & XFS_ATTR_NOLOCK))
+                lock_flags |= XFS_IOLOCK_EXCL;
+        xfs_ilock(ip, lock_flags);
+
+        /*
+         * Short circuit the truncate case for zero length files.
+         */
+        if (iattr->ia_size == 0 &&
+            ip->i_size == 0 && ip->i_d.di_nextents == 0) {
+                if (!(mask & (ATTR_CTIME|ATTR_MTIME)))
+                        goto out_unlock;
+
+                /*
+                 * Use the regular setattr path to update the timestamps.
+                 */
+                xfs_iunlock(ip, lock_flags);
+                iattr->ia_valid &= ~ATTR_SIZE;
+                return xfs_setattr_nonsize(ip, iattr, 0);
+        }
+
+        /*
+         * Make sure that the dquots are attached to the inode.
+         */
+        error = xfs_qm_dqattach_locked(ip, 0);
+        if (error)
+                goto out_unlock;
+
+        /*
+         * Now we can make the changes.  Before we join the inode to the
+         * transaction, take care of the part of the truncation that must be
+         * done without the inode lock.  This needs to be done before joining
+         * the inode to the transaction, because the inode cannot be unlocked
+         * once it is a part of the transaction.
+         */
+        if (iattr->ia_size > ip->i_size) {
+                /*
+                 * Do the first part of growing a file: zero any data in the
+                 * last block that is beyond the old EOF.  We need to do this
+                 * before the inode is joined to the transaction to modify
+                 * i_size.
+                 */
+                error = xfs_zero_eof(ip, iattr->ia_size, ip->i_size);
+                if (error)
+                        goto out_unlock;
+        }
+        xfs_iunlock(ip, XFS_ILOCK_EXCL);
+        lock_flags &= ~XFS_ILOCK_EXCL;
+
+        /*
+         * We are going to log the inode size change in this transaction so
+         * any previous writes that are beyond the on disk EOF and the new
+         * EOF that have not been written out need to be written here.  If we
+         * do not write the data out, we expose ourselves to the null files
+         * problem.
+         *
+         * Only flush from the on disk size to the smaller of the in memory
+         * file size or the new size as that's the range we really care about
+         * here and prevents waiting for other data not within the range we
+         * care about here.
+         */
+        if (ip->i_size != ip->i_d.di_size && iattr->ia_size > ip->i_d.di_size) {
+                error = xfs_flush_pages(ip, ip->i_d.di_size, iattr->ia_size,
+                                        XBF_ASYNC, FI_NONE);
+                if (error)
+                        goto out_unlock;
+        }
+
+        /*
+         * Wait for all I/O to complete.
+         */
+        xfs_ioend_wait(ip);
+
+        error = -block_truncate_page(inode->i_mapping, iattr->ia_size,
+                                     xfs_get_blocks);
+        if (error)
+                goto out_unlock;
+
+        tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE);
+        error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0,
+                                 XFS_TRANS_PERM_LOG_RES,
+                                 XFS_ITRUNCATE_LOG_COUNT);
+        if (error)
+                goto out_trans_cancel;
+
+        truncate_setsize(inode, iattr->ia_size);
+
+        commit_flags = XFS_TRANS_RELEASE_LOG_RES;
+        lock_flags |= XFS_ILOCK_EXCL;
+
+        xfs_ilock(ip, XFS_ILOCK_EXCL);
+
+        xfs_trans_ijoin(tp, ip);
+
+        /*
+         * Only change the c/mtime if we are changing the size or we are
+         * explicitly asked to change it.  This handles the semantic difference
+         * between truncate() and ftruncate() as implemented in the VFS.
+         *
+         * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a
+         * special case where we need to update the times despite not having
+         * these flags set.  For all other operations the VFS set these flags
+         * explicitly if it wants a timestamp update.
+         */
+        if (iattr->ia_size != ip->i_size &&
+            (!(mask & (ATTR_CTIME | ATTR_MTIME)))) {
+                iattr->ia_ctime = iattr->ia_mtime =
+                        current_fs_time(inode->i_sb);
+                mask |= ATTR_CTIME | ATTR_MTIME;
+        }
+
+        if (iattr->ia_size > ip->i_size) {
+                ip->i_d.di_size = iattr->ia_size;
+                ip->i_size = iattr->ia_size;
+        } else if (iattr->ia_size <= ip->i_size ||
+                   (iattr->ia_size == 0 && ip->i_d.di_nextents)) {
+                error = xfs_itruncate_data(&tp, ip, iattr->ia_size);
+                if (error)
+                        goto out_trans_abort;
+
+                /*
+                 * Truncated "down", so we're removing references to old data
+                 * here - if we delay flushing for a long time, we expose
+                 * ourselves unduly to the notorious NULL files problem.  So,
+                 * we mark this inode and flush it when the file is closed,
+                 * and do not wait the usual (long) time for writeout.
+                 */
+                xfs_iflags_set(ip, XFS_ITRUNCATED);
+        }
+
+        if (mask & ATTR_CTIME) {
+                inode->i_ctime = iattr->ia_ctime;
+                ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec;
+                ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec;
+                ip->i_update_core = 1;
+        }
+        if (mask & ATTR_MTIME) {
+                inode->i_mtime = iattr->ia_mtime;
+                ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
+                ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
+                ip->i_update_core = 1;
+        }
+
+        xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+
+        XFS_STATS_INC(xs_ig_attrchg);
+
+        if (mp->m_flags & XFS_MOUNT_WSYNC)
+                xfs_trans_set_sync(tp);
+
+        error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
+out_unlock:
+        if (lock_flags)
+                xfs_iunlock(ip, lock_flags);
+        return error;
+
+out_trans_abort:
+        commit_flags |= XFS_TRANS_ABORT;
+out_trans_cancel:
+        xfs_trans_cancel(tp, commit_flags);
+        goto out_unlock;
+}
+
+STATIC int
+xfs_vn_setattr(
+        struct dentry   *dentry,
+        struct iattr    *iattr)
+{
+        if (iattr->ia_valid & ATTR_SIZE)
+                return -xfs_setattr_size(XFS_I(dentry->d_inode), iattr, 0);
+        return -xfs_setattr_nonsize(XFS_I(dentry->d_inode), iattr, 0);
+}
+
+#define XFS_FIEMAP_FLAGS        (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR)
+
+/*
+ * Call fiemap helper to fill in user data.
+ * Returns positive errors to xfs_getbmap.
+ */
+STATIC int
+xfs_fiemap_format(
+        void                    **arg,
+        struct getbmapx         *bmv,
+        int                     *full)
+{
+        int                     error;
+        struct fiemap_extent_info *fieinfo = *arg;
+        u32                     fiemap_flags = 0;
+        u64                     logical, physical, length;
+
+        /* Do nothing for a hole */
+        if (bmv->bmv_block == -1LL)
+                return 0;
+
+        logical = BBTOB(bmv->bmv_offset);
+        physical = BBTOB(bmv->bmv_block);
+        length = BBTOB(bmv->bmv_length);
+
+        if (bmv->bmv_oflags & BMV_OF_PREALLOC)
+                fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN;
+        else if (bmv->bmv_oflags & BMV_OF_DELALLOC) {
+                fiemap_flags |= FIEMAP_EXTENT_DELALLOC;
+                physical = 0;   /* no block yet */
+        }
+        if (bmv->bmv_oflags & BMV_OF_LAST)
+                fiemap_flags |= FIEMAP_EXTENT_LAST;
+
+        error = fiemap_fill_next_extent(fieinfo, logical, physical,
+                                        length, fiemap_flags);
+        if (error > 0) {
+                error = 0;
+                *full = 1;      /* user array now full */
+        }
+
+        return -error;
+}
+
+STATIC int
+xfs_vn_fiemap(
+        struct inode            *inode,
+        struct fiemap_extent_info *fieinfo,
+        u64                     start,
+        u64                     length)
+{
+        xfs_inode_t             *ip = XFS_I(inode);
+        struct getbmapx         bm;
+        int                     error;
+
+        error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS);
+        if (error)
+                return error;
+
+        /* Set up bmap header for xfs internal routine */
+        bm.bmv_offset = BTOBB(start);
+        /* Special case for whole file */
+        if (length == FIEMAP_MAX_OFFSET)
+                bm.bmv_length = -1LL;
+        else
+                bm.bmv_length = BTOBB(length);
+
+        /* We add one because in getbmap world count includes the header */
+        bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM :
+                                        fieinfo->fi_extents_max + 1;
+        bm.bmv_count = min_t(__s32, bm.bmv_count,
+                             (PAGE_SIZE * 16 / sizeof(struct getbmapx)));
+        bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES;
+        if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR)
+                bm.bmv_iflags |= BMV_IF_ATTRFORK;
+        if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC))
+                bm.bmv_iflags |= BMV_IF_DELALLOC;
+
+        error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo);
+        if (error)
+                return -error;
+
+        return 0;
+}
+
+static const struct inode_operations xfs_inode_operations = {
+        .get_acl                = xfs_get_acl,
+        .getattr                = xfs_vn_getattr,
+        .setattr                = xfs_vn_setattr,
+        .setxattr               = generic_setxattr,
+        .getxattr               = generic_getxattr,
+        .removexattr            = generic_removexattr,
+        .listxattr              = xfs_vn_listxattr,
+        .fiemap                 = xfs_vn_fiemap,
+};
+
+static const struct inode_operations xfs_dir_inode_operations = {
+        .create                 = xfs_vn_create,
+        .lookup                 = xfs_vn_lookup,
+        .link                   = xfs_vn_link,
+        .unlink                 = xfs_vn_unlink,
+        .symlink                = xfs_vn_symlink,
+        .mkdir                  = xfs_vn_mkdir,
+        /*
+         * Yes, XFS uses the same method for rmdir and unlink.
+         *
+         * There are some subtile differences deeper in the code,
+         * but we use S_ISDIR to check for those.
+         */
+        .rmdir                  = xfs_vn_unlink,
+        .mknod                  = xfs_vn_mknod,
+        .rename                 = xfs_vn_rename,
+        .get_acl                = xfs_get_acl,
+        .getattr                = xfs_vn_getattr,
+        .setattr                = xfs_vn_setattr,
+        .setxattr               = generic_setxattr,
+        .getxattr               = generic_getxattr,
+        .removexattr            = generic_removexattr,
+        .listxattr              = xfs_vn_listxattr,
+};
+
+static const struct inode_operations xfs_dir_ci_inode_operations = {
+        .create                 = xfs_vn_create,
+        .lookup                 = xfs_vn_ci_lookup,
+        .link                   = xfs_vn_link,
+        .unlink                 = xfs_vn_unlink,
+        .symlink                = xfs_vn_symlink,
+        .mkdir                  = xfs_vn_mkdir,
+        /*
+         * Yes, XFS uses the same method for rmdir and unlink.
+         *
+         * There are some subtile differences deeper in the code,
+         * but we use S_ISDIR to check for those.
+         */
+        .rmdir                  = xfs_vn_unlink,
+        .mknod                  = xfs_vn_mknod,
+        .rename                 = xfs_vn_rename,
+        .get_acl                = xfs_get_acl,
+        .getattr                = xfs_vn_getattr,
+        .setattr                = xfs_vn_setattr,
+        .setxattr               = generic_setxattr,
+        .getxattr               = generic_getxattr,
+        .removexattr            = generic_removexattr,
+        .listxattr              = xfs_vn_listxattr,
+};
+
+static const struct inode_operations xfs_symlink_inode_operations = {
+        .readlink               = generic_readlink,
+        .follow_link            = xfs_vn_follow_link,
+        .put_link               = xfs_vn_put_link,
+        .get_acl                = xfs_get_acl,
+        .getattr                = xfs_vn_getattr,
+        .setattr                = xfs_vn_setattr,
+        .setxattr               = generic_setxattr,
+        .getxattr               = generic_getxattr,
+        .removexattr            = generic_removexattr,
+        .listxattr              = xfs_vn_listxattr,
+};
+
+STATIC void
+xfs_diflags_to_iflags(
+        struct inode            *inode,
+        struct xfs_inode        *ip)
+{
+        if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
+                inode->i_flags |= S_IMMUTABLE;
+        else
+                inode->i_flags &= ~S_IMMUTABLE;
+        if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
+                inode->i_flags |= S_APPEND;
+        else
+                inode->i_flags &= ~S_APPEND;
+        if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
+                inode->i_flags |= S_SYNC;
+        else
+                inode->i_flags &= ~S_SYNC;
+        if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
+                inode->i_flags |= S_NOATIME;
+        else
+                inode->i_flags &= ~S_NOATIME;
+}
+
+/*
+ * Initialize the Linux inode, set up the operation vectors and
+ * unlock the inode.
+ *
+ * When reading existing inodes from disk this is called directly
+ * from xfs_iget, when creating a new inode it is called from
+ * xfs_ialloc after setting up the inode.
+ *
+ * We are always called with an uninitialised linux inode here.
+ * We need to initialise the necessary fields and take a reference
+ * on it.
+ */
+void
+xfs_setup_inode(
+        struct xfs_inode        *ip)
+{
+        struct inode            *inode = &ip->i_vnode;
+
+        inode->i_ino = ip->i_ino;
+        inode->i_state = I_NEW;
+
+        inode_sb_list_add(inode);
+        /* make the inode look hashed for the writeback code */
+        hlist_add_fake(&inode->i_hash);
+
+        inode->i_mode   = ip->i_d.di_mode;
+        inode->i_nlink  = ip->i_d.di_nlink;
+        inode->i_uid    = ip->i_d.di_uid;
+        inode->i_gid    = ip->i_d.di_gid;
+
+        switch (inode->i_mode & S_IFMT) {
+        case S_IFBLK:
+        case S_IFCHR:
+                inode->i_rdev =
+                        MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
+                              sysv_minor(ip->i_df.if_u2.if_rdev));
+                break;
+        default:
+                inode->i_rdev = 0;
+                break;
+        }
+
+        inode->i_generation = ip->i_d.di_gen;
+        i_size_write(inode, ip->i_d.di_size);
+        inode->i_atime.tv_sec   = ip->i_d.di_atime.t_sec;
+        inode->i_atime.tv_nsec  = ip->i_d.di_atime.t_nsec;
+        inode->i_mtime.tv_sec   = ip->i_d.di_mtime.t_sec;
+        inode->i_mtime.tv_nsec  = ip->i_d.di_mtime.t_nsec;
+        inode->i_ctime.tv_sec   = ip->i_d.di_ctime.t_sec;
+        inode->i_ctime.tv_nsec  = ip->i_d.di_ctime.t_nsec;
+        xfs_diflags_to_iflags(inode, ip);
+
+        switch (inode->i_mode & S_IFMT) {
+        case S_IFREG:
+                inode->i_op = &xfs_inode_operations;
+                inode->i_fop = &xfs_file_operations;
+                inode->i_mapping->a_ops = &xfs_address_space_operations;
+                break;
+        case S_IFDIR:
+                if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb))
+                        inode->i_op = &xfs_dir_ci_inode_operations;
+                else
+                        inode->i_op = &xfs_dir_inode_operations;
+                inode->i_fop = &xfs_dir_file_operations;
+                break;
+        case S_IFLNK:
+                inode->i_op = &xfs_symlink_inode_operations;
+                if (!(ip->i_df.if_flags & XFS_IFINLINE))
+                        inode->i_mapping->a_ops = &xfs_address_space_operations;
+                break;
+        default:
+                inode->i_op = &xfs_inode_operations;
+                init_special_inode(inode, inode->i_mode, inode->i_rdev);
+                break;
+        }
+
+        /*
+         * If there is no attribute fork no ACL can exist on this inode,
+         * and it can't have any file capabilities attached to it either.
+         */
+        if (!XFS_IFORK_Q(ip)) {
+                inode_has_no_xattr(inode);
+                cache_no_acl(inode);
+        }
+
+        xfs_iflags_clear(ip, XFS_INEW);
+        barrier();
+
+        unlock_new_inode(inode);
+}