fs/xfs/xfs_iops.c

   1 /*
   2  * Copyright (c) 2000-2005 Silicon Graphics, Inc.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it would be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write the Free Software Foundation,
  16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  */
  18 #include "xfs.h"
  19 #include "xfs_fs.h"
  20 #include "xfs_shared.h"
  21 #include "xfs_format.h"
  22 #include "xfs_log_format.h"
  23 #include "xfs_trans_resv.h"
  24 #include "xfs_sb.h"
  25 #include "xfs_ag.h"
  26 #include "xfs_mount.h"
  27 #include "xfs_da_format.h"
  28 #include "xfs_inode.h"
  29 #include "xfs_bmap.h"
  30 #include "xfs_bmap_util.h"
  31 #include "xfs_acl.h"
  32 #include "xfs_quota.h"
  33 #include "xfs_error.h"
  34 #include "xfs_attr.h"
  35 #include "xfs_trans.h"
  36 #include "xfs_trace.h"
  37 #include "xfs_icache.h"
  38 #include "xfs_symlink.h"
  39 #include "xfs_da_btree.h"
  40 #include "xfs_dir2_priv.h"
  41 #include "xfs_dinode.h"
  42
  43 #include <linux/capability.h>
  44 #include <linux/xattr.h>
  45 #include <linux/namei.h>
  46 #include <linux/posix_acl.h>
  47 #include <linux/security.h>
  48 #include <linux/fiemap.h>
  49 #include <linux/slab.h>
  50
  51 static int
  52 xfs_initxattrs(
  53         struct inode            *inode,
  54         const struct xattr      *xattr_array,
  55         void                    *fs_info)
  56 {
  57         const struct xattr      *xattr;
  58         struct xfs_inode        *ip = XFS_I(inode);
  59         int                     error = 0;
  60
  61         for (xattr = xattr_array; xattr->name != NULL; xattr++) {
  62                 error = xfs_attr_set(ip, xattr->name, xattr->value,
  63                                      xattr->value_len, ATTR_SECURE);
  64                 if (error < 0)
  65                         break;
  66         }
  67         return error;
  68 }
  69
  70 /*
  71  * Hook in SELinux.  This is not quite correct yet, what we really need
  72  * here (as we do for default ACLs) is a mechanism by which creation of
  73  * these attrs can be journalled at inode creation time (along with the
  74  * inode, of course, such that log replay can't cause these to be lost).
  75  */
  76
  77 STATIC int
  78 xfs_init_security(
  79         struct inode    *inode,
  80         struct inode    *dir,
  81         const struct qstr *qstr)
  82 {
  83         return security_inode_init_security(inode, dir, qstr,
  84                                             &xfs_initxattrs, NULL);
  85 }
  86
  87 static void
  88 xfs_dentry_to_name(
  89         struct xfs_name *namep,
  90         struct dentry   *dentry,
  91         int             mode)
  92 {
  93         namep->name = dentry->d_name.name;
  94         namep->len = dentry->d_name.len;
  95         namep->type = xfs_mode_to_ftype[(mode & S_IFMT) >> S_SHIFT];
  96 }
  97
  98 STATIC void
  99 xfs_cleanup_inode(
 100         struct inode    *dir,
 101         struct inode    *inode,
 102         struct dentry   *dentry)
 103 {
 104         struct xfs_name teardown;
 105
 106         /* Oh, the horror.
 107          * If we can't add the ACL or we fail in
 108          * xfs_init_security we must back out.
 109          * ENOSPC can hit here, among other things.
 110          */
 111         xfs_dentry_to_name(&teardown, dentry, 0);
 112
 113         xfs_remove(XFS_I(dir), &teardown, XFS_I(inode));
 114         iput(inode);
 115 }
 116
 117 STATIC int
 118 xfs_vn_mknod(
 119         struct inode    *dir,
 120         struct dentry   *dentry,
 121         umode_t         mode,
 122         dev_t           rdev)
 123 {
 124         struct inode    *inode;
 125         struct xfs_inode *ip = NULL;
 126         struct posix_acl *default_acl = NULL;
 127         struct xfs_name name;
 128         int             error;
 129
 130         /*
 131          * Irix uses Missed'em'V split, but doesn't want to see
 132          * the upper 5 bits of (14bit) major.
 133          */
 134         if (S_ISCHR(mode) || S_ISBLK(mode)) {
 135                 if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff))
 136                         return -EINVAL;
 137                 rdev = sysv_encode_dev(rdev);
 138         } else {
 139                 rdev = 0;
 140         }
 141
 142         if (IS_POSIXACL(dir)) {
 143                 default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT);
 144                 if (IS_ERR(default_acl))
 145                         return PTR_ERR(default_acl);
 146
 147                 if (!default_acl)
 148                         mode &= ~current_umask();
 149         }
 150
 151         xfs_dentry_to_name(&name, dentry, mode);
 152         error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip);
 153         if (unlikely(error))
 154                 goto out_free_acl;
 155
 156         inode = VFS_I(ip);
 157
 158         error = xfs_init_security(inode, dir, &dentry->d_name);
 159         if (unlikely(error))
 160                 goto out_cleanup_inode;
 161
 162         if (default_acl) {
 163                 error = -xfs_inherit_acl(inode, default_acl);
 164                 default_acl = NULL;
 165                 if (unlikely(error))
 166                         goto out_cleanup_inode;
 167         }
 168
 169
 170         d_instantiate(dentry, inode);
 171         return -error;
 172
 173  out_cleanup_inode:
 174         xfs_cleanup_inode(dir, inode, dentry);
 175  out_free_acl:
 176         posix_acl_release(default_acl);
 177         return -error;
 178 }
 179
 180 STATIC int
 181 xfs_vn_create(
 182         struct inode    *dir,
 183         struct dentry   *dentry,
 184         umode_t         mode,
 185         bool            flags)
 186 {
 187         return xfs_vn_mknod(dir, dentry, mode, 0);
 188 }
 189
 190 STATIC int
 191 xfs_vn_mkdir(
 192         struct inode    *dir,
 193         struct dentry   *dentry,
 194         umode_t         mode)
 195 {
 196         return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0);
 197 }
 198
 199 STATIC struct dentry *
 200 xfs_vn_lookup(
 201         struct inode    *dir,
 202         struct dentry   *dentry,
 203         unsigned int flags)
 204 {
 205         struct xfs_inode *cip;
 206         struct xfs_name name;
 207         int             error;
 208
 209         if (dentry->d_name.len >= MAXNAMELEN)
 210                 return ERR_PTR(-ENAMETOOLONG);
 211
 212         xfs_dentry_to_name(&name, dentry, 0);
 213         error = xfs_lookup(XFS_I(dir), &name, &cip, NULL);
 214         if (unlikely(error)) {
 215                 if (unlikely(error != ENOENT))
 216                         return ERR_PTR(-error);
 217                 d_add(dentry, NULL);
 218                 return NULL;
 219         }
 220
 221         return d_splice_alias(VFS_I(cip), dentry);
 222 }
 223
 224 STATIC struct dentry *
 225 xfs_vn_ci_lookup(
 226         struct inode    *dir,
 227         struct dentry   *dentry,
 228         unsigned int flags)
 229 {
 230         struct xfs_inode *ip;
 231         struct xfs_name xname;
 232         struct xfs_name ci_name;
 233         struct qstr     dname;
 234         int             error;
 235
 236         if (dentry->d_name.len >= MAXNAMELEN)
 237                 return ERR_PTR(-ENAMETOOLONG);
 238
 239         xfs_dentry_to_name(&xname, dentry, 0);
 240         error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name);
 241         if (unlikely(error)) {
 242                 if (unlikely(error != ENOENT))
 243                         return ERR_PTR(-error);
 244                 /*
 245                  * call d_add(dentry, NULL) here when d_drop_negative_children
 246                  * is called in xfs_vn_mknod (ie. allow negative dentries
 247                  * with CI filesystems).
 248                  */
 249                 return NULL;
 250         }
 251
 252         /* if exact match, just splice and exit */
 253         if (!ci_name.name)
 254                 return d_splice_alias(VFS_I(ip), dentry);
 255
 256         /* else case-insensitive match... */
 257         dname.name = ci_name.name;
 258         dname.len = ci_name.len;
 259         dentry = d_add_ci(dentry, VFS_I(ip), &dname);
 260         kmem_free(ci_name.name);
 261         return dentry;
 262 }
 263
 264 STATIC int
 265 xfs_vn_link(
 266         struct dentry   *old_dentry,
 267         struct inode    *dir,
 268         struct dentry   *dentry)
 269 {
 270         struct inode    *inode = old_dentry->d_inode;
 271         struct xfs_name name;
 272         int             error;
 273
 274         xfs_dentry_to_name(&name, dentry, inode->i_mode);
 275
 276         error = xfs_link(XFS_I(dir), XFS_I(inode), &name);
 277         if (unlikely(error))
 278                 return -error;
 279
 280         ihold(inode);
 281         d_instantiate(dentry, inode);
 282         return 0;
 283 }
 284
 285 STATIC int
 286 xfs_vn_unlink(
 287         struct inode    *dir,
 288         struct dentry   *dentry)
 289 {
 290         struct xfs_name name;
 291         int             error;
 292
 293         xfs_dentry_to_name(&name, dentry, 0);
 294
 295         error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode));
 296         if (error)
 297                 return error;
 298
 299         /*
 300          * With unlink, the VFS makes the dentry "negative": no inode,
 301          * but still hashed. This is incompatible with case-insensitive
 302          * mode, so invalidate (unhash) the dentry in CI-mode.
 303          */
 304         if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb))
 305                 d_invalidate(dentry);
 306         return 0;
 307 }
 308
 309 STATIC int
 310 xfs_vn_symlink(
 311         struct inode    *dir,
 312         struct dentry   *dentry,
 313         const char      *symname)
 314 {
 315         struct inode    *inode;
 316         struct xfs_inode *cip = NULL;
 317         struct xfs_name name;
 318         int             error;
 319         umode_t         mode;
 320
 321         mode = S_IFLNK |
 322                 (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO);
 323         xfs_dentry_to_name(&name, dentry, mode);
 324
 325         error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip);
 326         if (unlikely(error))
 327                 goto out;
 328
 329         inode = VFS_I(cip);
 330
 331         error = xfs_init_security(inode, dir, &dentry->d_name);
 332         if (unlikely(error))
 333                 goto out_cleanup_inode;
 334
 335         d_instantiate(dentry, inode);
 336         return 0;
 337
 338  out_cleanup_inode:
 339         xfs_cleanup_inode(dir, inode, dentry);
 340  out:
 341         return -error;
 342 }
 343
 344 STATIC int
 345 xfs_vn_rename(
 346         struct inode    *odir,
 347         struct dentry   *odentry,
 348         struct inode    *ndir,
 349         struct dentry   *ndentry)
 350 {
 351         struct inode    *new_inode = ndentry->d_inode;
 352         struct xfs_name oname;
 353         struct xfs_name nname;
 354
 355         xfs_dentry_to_name(&oname, odentry, 0);
 356         xfs_dentry_to_name(&nname, ndentry, odentry->d_inode->i_mode);
 357
 358         return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode),
 359                            XFS_I(ndir), &nname, new_inode ?
 360                                                 XFS_I(new_inode) : NULL);
 361 }
 362
 363 /*
 364  * careful here - this function can get called recursively, so
 365  * we need to be very careful about how much stack we use.
 366  * uio is kmalloced for this reason...
 367  */
 368 STATIC void *
 369 xfs_vn_follow_link(
 370         struct dentry           *dentry,
 371         struct nameidata        *nd)
 372 {
 373         char                    *link;
 374         int                     error = -ENOMEM;
 375
 376         link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
 377         if (!link)
 378                 goto out_err;
 379
 380         error = -xfs_readlink(XFS_I(dentry->d_inode), link);
 381         if (unlikely(error))
 382                 goto out_kfree;
 383
 384         nd_set_link(nd, link);
 385         return NULL;
 386
 387  out_kfree:
 388         kfree(link);
 389  out_err:
 390         nd_set_link(nd, ERR_PTR(error));
 391         return NULL;
 392 }
 393
 394 STATIC void
 395 xfs_vn_put_link(
 396         struct dentry   *dentry,
 397         struct nameidata *nd,
 398         void            *p)
 399 {
 400         char            *s = nd_get_link(nd);
 401
 402         if (!IS_ERR(s))
 403                 kfree(s);
 404 }
 405
 406 STATIC int
 407 xfs_vn_getattr(
 408         struct vfsmount         *mnt,
 409         struct dentry           *dentry,
 410         struct kstat            *stat)
 411 {
 412         struct inode            *inode = dentry->d_inode;
 413         struct xfs_inode        *ip = XFS_I(inode);
 414         struct xfs_mount        *mp = ip->i_mount;
 415
 416         trace_xfs_getattr(ip);
 417
 418         if (XFS_FORCED_SHUTDOWN(mp))
 419                 return -XFS_ERROR(EIO);
 420
 421         stat->size = XFS_ISIZE(ip);
 422         stat->dev = inode->i_sb->s_dev;
 423         stat->mode = ip->i_d.di_mode;
 424         stat->nlink = ip->i_d.di_nlink;
 425         stat->uid = inode->i_uid;
 426         stat->gid = inode->i_gid;
 427         stat->ino = ip->i_ino;
 428         stat->atime = inode->i_atime;
 429         stat->mtime = inode->i_mtime;
 430         stat->ctime = inode->i_ctime;
 431         stat->blocks =
 432                 XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
 433
 434
 435         switch (inode->i_mode & S_IFMT) {
 436         case S_IFBLK:
 437         case S_IFCHR:
 438                 stat->blksize = BLKDEV_IOSIZE;
 439                 stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
 440                                    sysv_minor(ip->i_df.if_u2.if_rdev));
 441                 break;
 442         default:
 443                 if (XFS_IS_REALTIME_INODE(ip)) {
 444                         /*
 445                          * If the file blocks are being allocated from a
 446                          * realtime volume, then return the inode's realtime
 447                          * extent size or the realtime volume's extent size.
 448                          */
 449                         stat->blksize =
 450                                 xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog;
 451                 } else
 452                         stat->blksize = xfs_preferred_iosize(mp);
 453                 stat->rdev = 0;
 454                 break;
 455         }
 456
 457         return 0;
 458 }
 459
 460 static void
 461 xfs_setattr_mode(
 462         struct xfs_trans        *tp,
 463         struct xfs_inode        *ip,
 464         struct iattr            *iattr)
 465 {
 466         struct inode    *inode = VFS_I(ip);
 467         umode_t         mode = iattr->ia_mode;
 468
 469         ASSERT(tp);
 470         ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
 471
 472         ip->i_d.di_mode &= S_IFMT;
 473         ip->i_d.di_mode |= mode & ~S_IFMT;
 474
 475         inode->i_mode &= S_IFMT;
 476         inode->i_mode |= mode & ~S_IFMT;
 477 }
 478
 479 int
 480 xfs_setattr_nonsize(
 481         struct xfs_inode        *ip,
 482         struct iattr            *iattr,
 483         int                     flags)
 484 {
 485         xfs_mount_t             *mp = ip->i_mount;
 486         struct inode            *inode = VFS_I(ip);
 487         int                     mask = iattr->ia_valid;
 488         xfs_trans_t             *tp;
 489         int                     error;
 490         kuid_t                  uid = GLOBAL_ROOT_UID, iuid = GLOBAL_ROOT_UID;
 491         kgid_t                  gid = GLOBAL_ROOT_GID, igid = GLOBAL_ROOT_GID;
 492         struct xfs_dquot        *udqp = NULL, *gdqp = NULL;
 493         struct xfs_dquot        *olddquot1 = NULL, *olddquot2 = NULL;
 494
 495         trace_xfs_setattr(ip);
 496
 497         /* If acls are being inherited, we already have this checked */
 498         if (!(flags & XFS_ATTR_NOACL)) {
 499                 if (mp->m_flags & XFS_MOUNT_RDONLY)
 500                         return XFS_ERROR(EROFS);
 501
 502                 if (XFS_FORCED_SHUTDOWN(mp))
 503                         return XFS_ERROR(EIO);
 504
 505                 error = -inode_change_ok(inode, iattr);
 506                 if (error)
 507                         return XFS_ERROR(error);
 508         }
 509
 510         ASSERT((mask & ATTR_SIZE) == 0);
 511
 512         /*
 513          * If disk quotas is on, we make sure that the dquots do exist on disk,
 514          * before we start any other transactions. Trying to do this later
 515          * is messy. We don't care to take a readlock to look at the ids
 516          * in inode here, because we can't hold it across the trans_reserve.
 517          * If the IDs do change before we take the ilock, we're covered
 518          * because the i_*dquot fields will get updated anyway.
 519          */
 520         if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) {
 521                 uint    qflags = 0;
 522
 523                 if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) {
 524                         uid = iattr->ia_uid;
 525                         qflags |= XFS_QMOPT_UQUOTA;
 526                 } else {
 527                         uid = inode->i_uid;
 528                 }
 529                 if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) {
 530                         gid = iattr->ia_gid;
 531                         qflags |= XFS_QMOPT_GQUOTA;
 532                 }  else {
 533                         gid = inode->i_gid;
 534                 }
 535
 536                 /*
 537                  * We take a reference when we initialize udqp and gdqp,
 538                  * so it is important that we never blindly double trip on
 539                  * the same variable. See xfs_create() for an example.
 540                  */
 541                 ASSERT(udqp == NULL);
 542                 ASSERT(gdqp == NULL);
 543                 error = xfs_qm_vop_dqalloc(ip, xfs_kuid_to_uid(uid),
 544                                            xfs_kgid_to_gid(gid),
 545                                            xfs_get_projid(ip),
 546                                            qflags, &udqp, &gdqp, NULL);
 547                 if (error)
 548                         return error;
 549         }
 550
 551         tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
 552         error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0);
 553         if (error)
 554                 goto out_dqrele;
 555
 556         xfs_ilock(ip, XFS_ILOCK_EXCL);
 557
 558         /*
 559          * Change file ownership.  Must be the owner or privileged.
 560          */
 561         if (mask & (ATTR_UID|ATTR_GID)) {
 562                 /*
 563                  * These IDs could have changed since we last looked at them.
 564                  * But, we're assured that if the ownership did change
 565                  * while we didn't have the inode locked, inode's dquot(s)
 566                  * would have changed also.
 567                  */
 568                 iuid = inode->i_uid;
 569                 igid = inode->i_gid;
 570                 gid = (mask & ATTR_GID) ? iattr->ia_gid : igid;
 571                 uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid;
 572
 573                 /*
 574                  * Do a quota reservation only if uid/gid is actually
 575                  * going to change.
 576                  */
 577                 if (XFS_IS_QUOTA_RUNNING(mp) &&
 578                     ((XFS_IS_UQUOTA_ON(mp) && !uid_eq(iuid, uid)) ||
 579                      (XFS_IS_GQUOTA_ON(mp) && !gid_eq(igid, gid)))) {
 580                         ASSERT(tp);
 581                         error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp,
 582                                                 NULL, capable(CAP_FOWNER) ?
 583                                                 XFS_QMOPT_FORCE_RES : 0);
 584                         if (error)      /* out of quota */
 585                                 goto out_trans_cancel;
 586                 }
 587         }
 588
 589         xfs_trans_ijoin(tp, ip, 0);
 590
 591         /*
 592          * Change file ownership.  Must be the owner or privileged.
 593          */
 594         if (mask & (ATTR_UID|ATTR_GID)) {
 595                 /*
 596                  * CAP_FSETID overrides the following restrictions:
 597                  *
 598                  * The set-user-ID and set-group-ID bits of a file will be
 599                  * cleared upon successful return from chown()
 600                  */
 601                 if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) &&
 602                     !capable(CAP_FSETID))
 603                         ip->i_d.di_mode &= ~(S_ISUID|S_ISGID);
 604
 605                 /*
 606                  * Change the ownerships and register quota modifications
 607                  * in the transaction.
 608                  */
 609                 if (!uid_eq(iuid, uid)) {
 610                         if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) {
 611                                 ASSERT(mask & ATTR_UID);
 612                                 ASSERT(udqp);
 613                                 olddquot1 = xfs_qm_vop_chown(tp, ip,
 614                                                         &ip->i_udquot, udqp);
 615                         }
 616                         ip->i_d.di_uid = xfs_kuid_to_uid(uid);
 617                         inode->i_uid = uid;
 618                 }
 619                 if (!gid_eq(igid, gid)) {
 620                         if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) {
 621                                 ASSERT(!XFS_IS_PQUOTA_ON(mp));
 622                                 ASSERT(mask & ATTR_GID);
 623                                 ASSERT(gdqp);
 624                                 olddquot2 = xfs_qm_vop_chown(tp, ip,
 625                                                         &ip->i_gdquot, gdqp);
 626                         }
 627                         ip->i_d.di_gid = xfs_kgid_to_gid(gid);
 628                         inode->i_gid = gid;
 629                 }
 630         }
 631
 632         /*
 633          * Change file access modes.
 634          */
 635         if (mask & ATTR_MODE)
 636                 xfs_setattr_mode(tp, ip, iattr);
 637
 638         /*
 639          * Change file access or modified times.
 640          */
 641         if (mask & ATTR_ATIME) {
 642                 inode->i_atime = iattr->ia_atime;
 643                 ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec;
 644                 ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec;
 645         }
 646         if (mask & ATTR_CTIME) {
 647                 inode->i_ctime = iattr->ia_ctime;
 648                 ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec;
 649                 ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec;
 650         }
 651         if (mask & ATTR_MTIME) {
 652                 inode->i_mtime = iattr->ia_mtime;
 653                 ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
 654                 ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
 655         }
 656
 657         xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
 658
 659         XFS_STATS_INC(xs_ig_attrchg);
 660
 661         if (mp->m_flags & XFS_MOUNT_WSYNC)
 662                 xfs_trans_set_sync(tp);
 663         error = xfs_trans_commit(tp, 0);
 664
 665         xfs_iunlock(ip, XFS_ILOCK_EXCL);
 666
 667         /*
 668          * Release any dquot(s) the inode had kept before chown.
 669          */
 670         xfs_qm_dqrele(olddquot1);
 671         xfs_qm_dqrele(olddquot2);
 672         xfs_qm_dqrele(udqp);
 673         xfs_qm_dqrele(gdqp);
 674
 675         if (error)
 676                 return XFS_ERROR(error);
 677
 678         /*
 679          * XXX(hch): Updating the ACL entries is not atomic vs the i_mode
 680          *           update.  We could avoid this with linked transactions
 681          *           and passing down the transaction pointer all the way
 682          *           to attr_set.  No previous user of the generic
 683          *           Posix ACL code seems to care about this issue either.
 684          */
 685         if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) {
 686                 error = -xfs_acl_chmod(inode);
 687                 if (error)
 688                         return XFS_ERROR(error);
 689         }
 690
 691         return 0;
 692
 693 out_trans_cancel:
 694         xfs_trans_cancel(tp, 0);
 695         xfs_iunlock(ip, XFS_ILOCK_EXCL);
 696 out_dqrele:
 697         xfs_qm_dqrele(udqp);
 698         xfs_qm_dqrele(gdqp);
 699         return error;
 700 }
 701
 702 /*
 703  * Truncate file.  Must have write permission and not be a directory.
 704  */
 705 int
 706 xfs_setattr_size(
 707         struct xfs_inode        *ip,
 708         struct iattr            *iattr)
 709 {
 710         struct xfs_mount        *mp = ip->i_mount;
 711         struct inode            *inode = VFS_I(ip);
 712         int                     mask = iattr->ia_valid;
 713         xfs_off_t               oldsize, newsize;
 714         struct xfs_trans        *tp;
 715         int                     error;
 716         uint                    lock_flags = 0;
 717         uint                    commit_flags = 0;
 718
 719         trace_xfs_setattr(ip);
 720
 721         if (mp->m_flags & XFS_MOUNT_RDONLY)
 722                 return XFS_ERROR(EROFS);
 723
 724         if (XFS_FORCED_SHUTDOWN(mp))
 725                 return XFS_ERROR(EIO);
 726
 727         error = -inode_change_ok(inode, iattr);
 728         if (error)
 729                 return XFS_ERROR(error);
 730
 731         ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
 732         ASSERT(S_ISREG(ip->i_d.di_mode));
 733         ASSERT((mask & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET|
 734                         ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0);
 735
 736         oldsize = inode->i_size;
 737         newsize = iattr->ia_size;
 738
 739         /*
 740          * Short circuit the truncate case for zero length files.
 741          */
 742         if (newsize == 0 && oldsize == 0 && ip->i_d.di_nextents == 0) {
 743                 if (!(mask & (ATTR_CTIME|ATTR_MTIME)))
 744                         return 0;
 745
 746                 /*
 747                  * Use the regular setattr path to update the timestamps.
 748                  */
 749                 iattr->ia_valid &= ~ATTR_SIZE;
 750                 return xfs_setattr_nonsize(ip, iattr, 0);
 751         }
 752
 753         /*
 754          * Make sure that the dquots are attached to the inode.
 755          */
 756         error = xfs_qm_dqattach(ip, 0);
 757         if (error)
 758                 return error;
 759
 760         /*
 761          * Now we can make the changes.  Before we join the inode to the
 762          * transaction, take care of the part of the truncation that must be
 763          * done without the inode lock.  This needs to be done before joining
 764          * the inode to the transaction, because the inode cannot be unlocked
 765          * once it is a part of the transaction.
 766          */
 767         if (newsize > oldsize) {
 768                 /*
 769                  * Do the first part of growing a file: zero any data in the
 770                  * last block that is beyond the old EOF.  We need to do this
 771                  * before the inode is joined to the transaction to modify
 772                  * i_size.
 773                  */
 774                 error = xfs_zero_eof(ip, newsize, oldsize);
 775                 if (error)
 776                         return error;
 777         }
 778
 779         /*
 780          * We are going to log the inode size change in this transaction so
 781          * any previous writes that are beyond the on disk EOF and the new
 782          * EOF that have not been written out need to be written here.  If we
 783          * do not write the data out, we expose ourselves to the null files
 784          * problem.
 785          *
 786          * Only flush from the on disk size to the smaller of the in memory
 787          * file size or the new size as that's the range we really care about
 788          * here and prevents waiting for other data not within the range we
 789          * care about here.
 790          */
 791         if (oldsize != ip->i_d.di_size && newsize > ip->i_d.di_size) {
 792                 error = -filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
 793                                                       ip->i_d.di_size, newsize);
 794                 if (error)
 795                         return error;
 796         }
 797
 798         /*
 799          * Wait for all direct I/O to complete.
 800          */
 801         inode_dio_wait(inode);
 802
 803         error = -block_truncate_page(inode->i_mapping, newsize, xfs_get_blocks);
 804         if (error)
 805                 return error;
 806
 807         tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE);
 808         error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0);
 809         if (error)
 810                 goto out_trans_cancel;
 811
 812         truncate_setsize(inode, newsize);
 813
 814         commit_flags = XFS_TRANS_RELEASE_LOG_RES;
 815         lock_flags |= XFS_ILOCK_EXCL;
 816
 817         xfs_ilock(ip, XFS_ILOCK_EXCL);
 818
 819         xfs_trans_ijoin(tp, ip, 0);
 820
 821         /*
 822          * Only change the c/mtime if we are changing the size or we are
 823          * explicitly asked to change it.  This handles the semantic difference
 824          * between truncate() and ftruncate() as implemented in the VFS.
 825          *
 826          * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a
 827          * special case where we need to update the times despite not having
 828          * these flags set.  For all other operations the VFS set these flags
 829          * explicitly if it wants a timestamp update.
 830          */
 831         if (newsize != oldsize && (!(mask & (ATTR_CTIME | ATTR_MTIME)))) {
 832                 iattr->ia_ctime = iattr->ia_mtime =
 833                         current_fs_time(inode->i_sb);
 834                 mask |= ATTR_CTIME | ATTR_MTIME;
 835         }
 836
 837         /*
 838          * The first thing we do is set the size to new_size permanently on
 839          * disk.  This way we don't have to worry about anyone ever being able
 840          * to look at the data being freed even in the face of a crash.
 841          * What we're getting around here is the case where we free a block, it
 842          * is allocated to another file, it is written to, and then we crash.
 843          * If the new data gets written to the file but the log buffers
 844          * containing the free and reallocation don't, then we'd end up with
 845          * garbage in the blocks being freed.  As long as we make the new size
 846          * permanent before actually freeing any blocks it doesn't matter if
 847          * they get written to.
 848          */
 849         ip->i_d.di_size = newsize;
 850         xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
 851
 852         if (newsize <= oldsize) {
 853                 error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, newsize);
 854                 if (error)
 855                         goto out_trans_abort;
 856
 857                 /*
 858                  * Truncated "down", so we're removing references to old data
 859                  * here - if we delay flushing for a long time, we expose
 860                  * ourselves unduly to the notorious NULL files problem.  So,
 861                  * we mark this inode and flush it when the file is closed,
 862                  * and do not wait the usual (long) time for writeout.
 863                  */
 864                 xfs_iflags_set(ip, XFS_ITRUNCATED);
 865
 866                 /* A truncate down always removes post-EOF blocks. */
 867                 xfs_inode_clear_eofblocks_tag(ip);
 868         }
 869
 870         /*
 871          * Change file access modes.
 872          */
 873         if (mask & ATTR_MODE)
 874                 xfs_setattr_mode(tp, ip, iattr);
 875
 876         if (mask & ATTR_CTIME) {
 877                 inode->i_ctime = iattr->ia_ctime;
 878                 ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec;
 879                 ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec;
 880         }
 881         if (mask & ATTR_MTIME) {
 882                 inode->i_mtime = iattr->ia_mtime;
 883                 ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
 884                 ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
 885         }
 886
 887         xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
 888
 889         XFS_STATS_INC(xs_ig_attrchg);
 890
 891         if (mp->m_flags & XFS_MOUNT_WSYNC)
 892                 xfs_trans_set_sync(tp);
 893
 894         error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
 895 out_unlock:
 896         if (lock_flags)
 897                 xfs_iunlock(ip, lock_flags);
 898         return error;
 899
 900 out_trans_abort:
 901         commit_flags |= XFS_TRANS_ABORT;
 902 out_trans_cancel:
 903         xfs_trans_cancel(tp, commit_flags);
 904         goto out_unlock;
 905 }
 906
 907 STATIC int
 908 xfs_vn_setattr(
 909         struct dentry           *dentry,
 910         struct iattr            *iattr)
 911 {
 912         struct xfs_inode        *ip = XFS_I(dentry->d_inode);
 913         int                     error;
 914
 915         if (iattr->ia_valid & ATTR_SIZE) {
 916                 xfs_ilock(ip, XFS_IOLOCK_EXCL);
 917                 error = xfs_setattr_size(ip, iattr);
 918                 xfs_iunlock(ip, XFS_IOLOCK_EXCL);
 919         } else {
 920                 error = xfs_setattr_nonsize(ip, iattr, 0);
 921         }
 922
 923         return -error;
 924 }
 925
 926 STATIC int
 927 xfs_vn_update_time(
 928         struct inode            *inode,
 929         struct timespec         *now,
 930         int                     flags)
 931 {
 932         struct xfs_inode        *ip = XFS_I(inode);
 933         struct xfs_mount        *mp = ip->i_mount;
 934         struct xfs_trans        *tp;
 935         int                     error;
 936
 937         trace_xfs_update_time(ip);
 938
 939         tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS);
 940         error = xfs_trans_reserve(tp, &M_RES(mp)->tr_fsyncts, 0, 0);
 941         if (error) {
 942                 xfs_trans_cancel(tp, 0);
 943                 return -error;
 944         }
 945
 946         xfs_ilock(ip, XFS_ILOCK_EXCL);
 947         if (flags & S_CTIME) {
 948                 inode->i_ctime = *now;
 949                 ip->i_d.di_ctime.t_sec = (__int32_t)now->tv_sec;
 950                 ip->i_d.di_ctime.t_nsec = (__int32_t)now->tv_nsec;
 951         }
 952         if (flags & S_MTIME) {
 953                 inode->i_mtime = *now;
 954                 ip->i_d.di_mtime.t_sec = (__int32_t)now->tv_sec;
 955                 ip->i_d.di_mtime.t_nsec = (__int32_t)now->tv_nsec;
 956         }
 957         if (flags & S_ATIME) {
 958                 inode->i_atime = *now;
 959                 ip->i_d.di_atime.t_sec = (__int32_t)now->tv_sec;
 960                 ip->i_d.di_atime.t_nsec = (__int32_t)now->tv_nsec;
 961         }
 962         xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
 963         xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP);
 964         return -xfs_trans_commit(tp, 0);
 965 }
 966
 967 #define XFS_FIEMAP_FLAGS        (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR)
 968
 969 /*
 970  * Call fiemap helper to fill in user data.
 971  * Returns positive errors to xfs_getbmap.
 972  */
 973 STATIC int
 974 xfs_fiemap_format(
 975         void                    **arg,
 976         struct getbmapx         *bmv,
 977         int                     *full)
 978 {
 979         int                     error;
 980         struct fiemap_extent_info *fieinfo = *arg;
 981         u32                     fiemap_flags = 0;
 982         u64                     logical, physical, length;
 983
 984         /* Do nothing for a hole */
 985         if (bmv->bmv_block == -1LL)
 986                 return 0;
 987
 988         logical = BBTOB(bmv->bmv_offset);
 989         physical = BBTOB(bmv->bmv_block);
 990         length = BBTOB(bmv->bmv_length);
 991
 992         if (bmv->bmv_oflags & BMV_OF_PREALLOC)
 993                 fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN;
 994         else if (bmv->bmv_oflags & BMV_OF_DELALLOC) {
 995                 fiemap_flags |= (FIEMAP_EXTENT_DELALLOC |
 996                                  FIEMAP_EXTENT_UNKNOWN);
 997                 physical = 0;   /* no block yet */
 998         }
 999         if (bmv->bmv_oflags & BMV_OF_LAST)
1000                 fiemap_flags |= FIEMAP_EXTENT_LAST;
1001
1002         error = fiemap_fill_next_extent(fieinfo, logical, physical,
1003                                         length, fiemap_flags);
1004         if (error > 0) {
1005                 error = 0;
1006                 *full = 1;      /* user array now full */
1007         }
1008
1009         return -error;
1010 }
1011
1012 STATIC int
1013 xfs_vn_fiemap(
1014         struct inode            *inode,
1015         struct fiemap_extent_info *fieinfo,
1016         u64                     start,
1017         u64                     length)
1018 {
1019         xfs_inode_t             *ip = XFS_I(inode);
1020         struct getbmapx         bm;
1021         int                     error;
1022
1023         error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS);
1024         if (error)
1025                 return error;
1026
1027         /* Set up bmap header for xfs internal routine */
1028         bm.bmv_offset = BTOBB(start);
1029         /* Special case for whole file */
1030         if (length == FIEMAP_MAX_OFFSET)
1031                 bm.bmv_length = -1LL;
1032         else
1033                 bm.bmv_length = BTOBB(length);
1034
1035         /* We add one because in getbmap world count includes the header */
1036         bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM :
1037                                         fieinfo->fi_extents_max + 1;
1038         bm.bmv_count = min_t(__s32, bm.bmv_count,
1039                              (PAGE_SIZE * 16 / sizeof(struct getbmapx)));
1040         bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES;
1041         if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR)
1042                 bm.bmv_iflags |= BMV_IF_ATTRFORK;
1043         if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC))
1044                 bm.bmv_iflags |= BMV_IF_DELALLOC;
1045
1046         error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo);
1047         if (error)
1048                 return -error;
1049
1050         return 0;
1051 }
1052
1053 static const struct inode_operations xfs_inode_operations = {
1054         .get_acl                = xfs_get_acl,
1055         .getattr                = xfs_vn_getattr,
1056         .setattr                = xfs_vn_setattr,
1057         .setxattr               = generic_setxattr,
1058         .getxattr               = generic_getxattr,
1059         .removexattr            = generic_removexattr,
1060         .listxattr              = xfs_vn_listxattr,
1061         .fiemap                 = xfs_vn_fiemap,
1062         .update_time            = xfs_vn_update_time,
1063 };
1064
1065 static const struct inode_operations xfs_dir_inode_operations = {
1066         .create                 = xfs_vn_create,
1067         .lookup                 = xfs_vn_lookup,
1068         .link                   = xfs_vn_link,
1069         .unlink                 = xfs_vn_unlink,
1070         .symlink                = xfs_vn_symlink,
1071         .mkdir                  = xfs_vn_mkdir,
1072         /*
1073          * Yes, XFS uses the same method for rmdir and unlink.
1074          *
1075          * There are some subtile differences deeper in the code,
1076          * but we use S_ISDIR to check for those.
1077          */
1078         .rmdir                  = xfs_vn_unlink,
1079         .mknod                  = xfs_vn_mknod,
1080         .rename                 = xfs_vn_rename,
1081         .get_acl                = xfs_get_acl,
1082         .getattr                = xfs_vn_getattr,
1083         .setattr                = xfs_vn_setattr,
1084         .setxattr               = generic_setxattr,
1085         .getxattr               = generic_getxattr,
1086         .removexattr            = generic_removexattr,
1087         .listxattr              = xfs_vn_listxattr,
1088         .update_time            = xfs_vn_update_time,
1089 };
1090
1091 static const struct inode_operations xfs_dir_ci_inode_operations = {
1092         .create                 = xfs_vn_create,
1093         .lookup                 = xfs_vn_ci_lookup,
1094         .link                   = xfs_vn_link,
1095         .unlink                 = xfs_vn_unlink,
1096         .symlink                = xfs_vn_symlink,
1097         .mkdir                  = xfs_vn_mkdir,
1098         /*
1099          * Yes, XFS uses the same method for rmdir and unlink.
1100          *
1101          * There are some subtile differences deeper in the code,
1102          * but we use S_ISDIR to check for those.
1103          */
1104         .rmdir                  = xfs_vn_unlink,
1105         .mknod                  = xfs_vn_mknod,
1106         .rename                 = xfs_vn_rename,
1107         .get_acl                = xfs_get_acl,
1108         .getattr                = xfs_vn_getattr,
1109         .setattr                = xfs_vn_setattr,
1110         .setxattr               = generic_setxattr,
1111         .getxattr               = generic_getxattr,
1112         .removexattr            = generic_removexattr,
1113         .listxattr              = xfs_vn_listxattr,
1114         .update_time            = xfs_vn_update_time,
1115 };
1116
1117 static const struct inode_operations xfs_symlink_inode_operations = {
1118         .readlink               = generic_readlink,
1119         .follow_link            = xfs_vn_follow_link,
1120         .put_link               = xfs_vn_put_link,
1121         .get_acl                = xfs_get_acl,
1122         .getattr                = xfs_vn_getattr,
1123         .setattr                = xfs_vn_setattr,
1124         .setxattr               = generic_setxattr,
1125         .getxattr               = generic_getxattr,
1126         .removexattr            = generic_removexattr,
1127         .listxattr              = xfs_vn_listxattr,
1128         .update_time            = xfs_vn_update_time,
1129 };
1130
1131 STATIC void
1132 xfs_diflags_to_iflags(
1133         struct inode            *inode,
1134         struct xfs_inode        *ip)
1135 {
1136         if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
1137                 inode->i_flags |= S_IMMUTABLE;
1138         else
1139                 inode->i_flags &= ~S_IMMUTABLE;
1140         if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
1141                 inode->i_flags |= S_APPEND;
1142         else
1143                 inode->i_flags &= ~S_APPEND;
1144         if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
1145                 inode->i_flags |= S_SYNC;
1146         else
1147                 inode->i_flags &= ~S_SYNC;
1148         if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
1149                 inode->i_flags |= S_NOATIME;
1150         else
1151                 inode->i_flags &= ~S_NOATIME;
1152 }
1153
1154 /*
1155  * Initialize the Linux inode, set up the operation vectors and
1156  * unlock the inode.
1157  *
1158  * When reading existing inodes from disk this is called directly
1159  * from xfs_iget, when creating a new inode it is called from
1160  * xfs_ialloc after setting up the inode.
1161  *
1162  * We are always called with an uninitialised linux inode here.
1163  * We need to initialise the necessary fields and take a reference
1164  * on it.
1165  */
1166 void
1167 xfs_setup_inode(
1168         struct xfs_inode        *ip)
1169 {
1170         struct inode            *inode = &ip->i_vnode;
1171         gfp_t                   gfp_mask;
1172
1173         inode->i_ino = ip->i_ino;
1174         inode->i_state = I_NEW;
1175
1176         inode_sb_list_add(inode);
1177         /* make the inode look hashed for the writeback code */
1178         hlist_add_fake(&inode->i_hash);
1179
1180         inode->i_mode   = ip->i_d.di_mode;
1181         set_nlink(inode, ip->i_d.di_nlink);
1182         inode->i_uid    = xfs_uid_to_kuid(ip->i_d.di_uid);
1183         inode->i_gid    = xfs_gid_to_kgid(ip->i_d.di_gid);
1184
1185         switch (inode->i_mode & S_IFMT) {
1186         case S_IFBLK:
1187         case S_IFCHR:
1188                 inode->i_rdev =
1189                         MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
1190                               sysv_minor(ip->i_df.if_u2.if_rdev));
1191                 break;
1192         default:
1193                 inode->i_rdev = 0;
1194                 break;
1195         }
1196
1197         inode->i_generation = ip->i_d.di_gen;
1198         i_size_write(inode, ip->i_d.di_size);
1199         inode->i_atime.tv_sec   = ip->i_d.di_atime.t_sec;
1200         inode->i_atime.tv_nsec  = ip->i_d.di_atime.t_nsec;
1201         inode->i_mtime.tv_sec   = ip->i_d.di_mtime.t_sec;
1202         inode->i_mtime.tv_nsec  = ip->i_d.di_mtime.t_nsec;
1203         inode->i_ctime.tv_sec   = ip->i_d.di_ctime.t_sec;
1204         inode->i_ctime.tv_nsec  = ip->i_d.di_ctime.t_nsec;
1205         xfs_diflags_to_iflags(inode, ip);
1206
1207         ip->d_ops = ip->i_mount->m_nondir_inode_ops;
1208         switch (inode->i_mode & S_IFMT) {
1209         case S_IFREG:
1210                 inode->i_op = &xfs_inode_operations;
1211                 inode->i_fop = &xfs_file_operations;
1212                 inode->i_mapping->a_ops = &xfs_address_space_operations;
1213                 break;
1214         case S_IFDIR:
1215                 if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb))
1216                         inode->i_op = &xfs_dir_ci_inode_operations;
1217                 else
1218                         inode->i_op = &xfs_dir_inode_operations;
1219                 inode->i_fop = &xfs_dir_file_operations;
1220                 ip->d_ops = ip->i_mount->m_dir_inode_ops;
1221                 break;
1222         case S_IFLNK:
1223                 inode->i_op = &xfs_symlink_inode_operations;
1224                 if (!(ip->i_df.if_flags & XFS_IFINLINE))
1225                         inode->i_mapping->a_ops = &xfs_address_space_operations;
1226                 break;
1227         default:
1228                 inode->i_op = &xfs_inode_operations;
1229                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
1230                 break;
1231         }
1232
1233         /*
1234          * Ensure all page cache allocations are done from GFP_NOFS context to
1235          * prevent direct reclaim recursion back into the filesystem and blowing
1236          * stacks or deadlocking.
1237          */
1238         gfp_mask = mapping_gfp_mask(inode->i_mapping);
1239         mapping_set_gfp_mask(inode->i_mapping, (gfp_mask & ~(__GFP_FS)));
1240
1241         /*
1242          * If there is no attribute fork no ACL can exist on this inode,
1243          * and it can't have any file capabilities attached to it either.
1244          */
1245         if (!XFS_IFORK_Q(ip)) {
1246                 inode_has_no_xattr(inode);
1247                 cache_no_acl(inode);
1248         }
1249
1250         xfs_iflags_clear(ip, XFS_INEW);
1251         barrier();
1252
1253         unlock_new_inode(inode);
1254 }