2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
10 #include <linux/slab.h>
11 #include <linux/spinlock.h>
12 #include <linux/completion.h>
13 #include <linux/buffer_head.h>
14 #include <linux/namei.h>
16 #include <linux/xattr.h>
17 #include <linux/posix_acl.h>
18 #include <linux/gfs2_ondisk.h>
19 #include <linux/crc32.h>
20 #include <linux/fiemap.h>
21 #include <linux/security.h>
22 #include <asm/uaccess.h>
40 struct gfs2_skip_data {
46 static int iget_test(struct inode *inode, void *opaque)
48 struct gfs2_inode *ip = GFS2_I(inode);
49 struct gfs2_skip_data *data = opaque;
51 if (ip->i_no_addr == data->no_addr) {
52 if (data->non_block &&
53 inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)) {
62 static int iget_set(struct inode *inode, void *opaque)
64 struct gfs2_inode *ip = GFS2_I(inode);
65 struct gfs2_skip_data *data = opaque;
69 inode->i_ino = (unsigned long)(data->no_addr);
70 ip->i_no_addr = data->no_addr;
74 struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr, int non_block)
76 unsigned long hash = (unsigned long)no_addr;
77 struct gfs2_skip_data data;
79 data.no_addr = no_addr;
81 data.non_block = non_block;
82 return ilookup5(sb, hash, iget_test, &data);
85 static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr,
88 struct gfs2_skip_data data;
89 unsigned long hash = (unsigned long)no_addr;
91 data.no_addr = no_addr;
93 data.non_block = non_block;
94 return iget5_locked(sb, hash, iget_test, iget_set, &data);
98 * gfs2_set_iop - Sets inode operations
99 * @inode: The inode with correct i_mode filled in
101 * GFS2 lookup code fills in vfs inode contents based on info obtained
102 * from directory entry inside gfs2_inode_lookup().
105 static void gfs2_set_iop(struct inode *inode)
107 struct gfs2_sbd *sdp = GFS2_SB(inode);
108 umode_t mode = inode->i_mode;
111 inode->i_op = &gfs2_file_iops;
112 if (gfs2_localflocks(sdp))
113 inode->i_fop = &gfs2_file_fops_nolock;
115 inode->i_fop = &gfs2_file_fops;
116 } else if (S_ISDIR(mode)) {
117 inode->i_op = &gfs2_dir_iops;
118 if (gfs2_localflocks(sdp))
119 inode->i_fop = &gfs2_dir_fops_nolock;
121 inode->i_fop = &gfs2_dir_fops;
122 } else if (S_ISLNK(mode)) {
123 inode->i_op = &gfs2_symlink_iops;
125 inode->i_op = &gfs2_file_iops;
126 init_special_inode(inode, inode->i_mode, inode->i_rdev);
131 * gfs2_inode_lookup - Lookup an inode
132 * @sb: The super block
133 * @no_addr: The inode number
134 * @type: The type of the inode
135 * non_block: Can we block on inodes that are being freed?
137 * Returns: A VFS inode, or an error
140 struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type,
141 u64 no_addr, u64 no_formal_ino, int non_block)
144 struct gfs2_inode *ip;
145 struct gfs2_glock *io_gl = NULL;
148 inode = gfs2_iget(sb, no_addr, non_block);
152 return ERR_PTR(-ENOBUFS);
154 if (inode->i_state & I_NEW) {
155 struct gfs2_sbd *sdp = GFS2_SB(inode);
156 ip->i_no_formal_ino = no_formal_ino;
158 error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
161 ip->i_gl->gl_object = ip;
163 error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
167 set_bit(GIF_INVALID, &ip->i_flags);
168 error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
172 ip->i_iopen_gh.gh_gl->gl_object = ip;
173 gfs2_glock_put(io_gl);
176 if (type == DT_UNKNOWN) {
177 /* Inode glock must be locked already */
178 error = gfs2_inode_refresh(GFS2_I(inode));
182 inode->i_mode = DT2IF(type);
186 unlock_new_inode(inode);
192 ip->i_iopen_gh.gh_gl->gl_object = NULL;
193 gfs2_glock_dq_uninit(&ip->i_iopen_gh);
196 gfs2_glock_put(io_gl);
198 ip->i_gl->gl_object = NULL;
199 gfs2_glock_put(ip->i_gl);
202 return ERR_PTR(error);
205 struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
206 u64 *no_formal_ino, unsigned int blktype)
208 struct super_block *sb = sdp->sd_vfs;
209 struct gfs2_holder i_gh;
210 struct inode *inode = NULL;
213 /* Must not read in block until block type is verified */
214 error = gfs2_glock_nq_num(sdp, no_addr, &gfs2_inode_glops,
215 LM_ST_EXCLUSIVE, GL_SKIP, &i_gh);
217 return ERR_PTR(error);
219 error = gfs2_check_blk_type(sdp, no_addr, blktype);
223 inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, 0, 1);
227 /* Two extra checks for NFS only */
230 if (GFS2_I(inode)->i_no_formal_ino != *no_formal_ino)
234 if (GFS2_I(inode)->i_diskflags & GFS2_DIF_SYSTEM)
241 gfs2_glock_dq_uninit(&i_gh);
242 return error ? ERR_PTR(error) : inode;
249 struct inode *gfs2_lookup_simple(struct inode *dip, const char *name)
253 gfs2_str2qstr(&qstr, name);
254 inode = gfs2_lookupi(dip, &qstr, 1);
255 /* gfs2_lookupi has inconsistent callers: vfs
256 * related routines expect NULL for no entry found,
257 * gfs2_lookup_simple callers expect ENOENT
258 * and do not check for NULL.
261 return ERR_PTR(-ENOENT);
268 * gfs2_lookupi - Look up a filename in a directory and return its inode
269 * @d_gh: An initialized holder for the directory glock
270 * @name: The name of the inode to look for
271 * @is_root: If 1, ignore the caller's permissions
272 * @i_gh: An uninitialized holder for the new inode glock
274 * This can be called via the VFS filldir function when NFS is doing
275 * a readdirplus and the inode which its intending to stat isn't
276 * already in cache. In this case we must not take the directory glock
277 * again, since the readdir call will have already taken that lock.
282 struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
285 struct super_block *sb = dir->i_sb;
286 struct gfs2_inode *dip = GFS2_I(dir);
287 struct gfs2_holder d_gh;
289 struct inode *inode = NULL;
292 if (!name->len || name->len > GFS2_FNAMESIZE)
293 return ERR_PTR(-ENAMETOOLONG);
295 if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) ||
296 (name->len == 2 && memcmp(name->name, "..", 2) == 0 &&
297 dir == sb->s_root->d_inode)) {
302 if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) {
303 error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
305 return ERR_PTR(error);
310 error = gfs2_permission(dir, MAY_EXEC, 0);
315 inode = gfs2_dir_search(dir, name);
317 error = PTR_ERR(inode);
320 gfs2_glock_dq_uninit(&d_gh);
321 if (error == -ENOENT)
323 return inode ? inode : ERR_PTR(error);
327 * create_ok - OK to create a new on-disk inode here?
328 * @dip: Directory in which dinode is to be created
329 * @name: Name of new dinode
335 static int create_ok(struct gfs2_inode *dip, const struct qstr *name,
340 error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC, 0);
344 /* Don't create entries in an unlinked directory */
345 if (!dip->i_inode.i_nlink)
348 error = gfs2_dir_check(&dip->i_inode, name, NULL);
359 if (dip->i_entries == (u32)-1)
361 if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1)
367 static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode,
368 unsigned int *uid, unsigned int *gid)
370 if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir &&
371 (dip->i_inode.i_mode & S_ISUID) && dip->i_inode.i_uid) {
374 else if (dip->i_inode.i_uid != current_fsuid())
376 *uid = dip->i_inode.i_uid;
378 *uid = current_fsuid();
380 if (dip->i_inode.i_mode & S_ISGID) {
383 *gid = dip->i_inode.i_gid;
385 *gid = current_fsgid();
388 static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
390 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
393 if (gfs2_alloc_get(dip) == NULL)
396 dip->i_alloc->al_requested = RES_DINODE;
397 error = gfs2_inplace_reserve(dip);
401 error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS, 0);
405 error = gfs2_alloc_di(dip, no_addr, generation);
410 gfs2_inplace_release(dip);
417 * init_dinode - Fill in a new dinode structure
418 * @dip: the directory this inode is being created in
419 * @gl: The glock covering the new inode
420 * @inum: the inode number
421 * @mode: the file permissions
427 static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
428 const struct gfs2_inum_host *inum, unsigned int mode,
429 unsigned int uid, unsigned int gid,
430 const u64 *generation, dev_t dev, struct buffer_head **bhp)
432 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
433 struct gfs2_dinode *di;
434 struct buffer_head *dibh;
435 struct timespec tv = CURRENT_TIME;
437 dibh = gfs2_meta_new(gl, inum->no_addr);
438 gfs2_trans_add_bh(gl, dibh, 1);
439 gfs2_metatype_set(dibh, GFS2_METATYPE_DI, GFS2_FORMAT_DI);
440 gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
441 di = (struct gfs2_dinode *)dibh->b_data;
443 di->di_num.no_formal_ino = cpu_to_be64(inum->no_formal_ino);
444 di->di_num.no_addr = cpu_to_be64(inum->no_addr);
445 di->di_mode = cpu_to_be32(mode);
446 di->di_uid = cpu_to_be32(uid);
447 di->di_gid = cpu_to_be32(gid);
450 di->di_blocks = cpu_to_be64(1);
451 di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(tv.tv_sec);
452 di->di_major = cpu_to_be32(MAJOR(dev));
453 di->di_minor = cpu_to_be32(MINOR(dev));
454 di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr);
455 di->di_generation = cpu_to_be64(*generation);
459 if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) ||
460 gfs2_tune_get(sdp, gt_new_files_jdata))
461 di->di_flags |= cpu_to_be32(GFS2_DIF_JDATA);
462 } else if (S_ISDIR(mode)) {
463 di->di_flags |= cpu_to_be32(dip->i_diskflags &
464 GFS2_DIF_INHERIT_JDATA);
468 di->di_payload_format = cpu_to_be32(S_ISDIR(mode) ? GFS2_FORMAT_DE : 0);
474 memset(&di->__pad4, 0, sizeof(di->__pad4));
476 di->di_atime_nsec = cpu_to_be32(tv.tv_nsec);
477 di->di_mtime_nsec = cpu_to_be32(tv.tv_nsec);
478 di->di_ctime_nsec = cpu_to_be32(tv.tv_nsec);
479 memset(&di->di_reserved, 0, sizeof(di->di_reserved));
481 set_buffer_uptodate(dibh);
486 static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
487 unsigned int mode, const struct gfs2_inum_host *inum,
488 const u64 *generation, dev_t dev, struct buffer_head **bhp)
490 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
491 unsigned int uid, gid;
494 munge_mode_uid_gid(dip, &mode, &uid, &gid);
495 if (!gfs2_alloc_get(dip))
498 error = gfs2_quota_lock(dip, uid, gid);
502 error = gfs2_quota_check(dip, uid, gid);
506 error = gfs2_trans_begin(sdp, RES_DINODE + RES_QUOTA, 0);
510 init_dinode(dip, gl, inum, mode, uid, gid, generation, dev, bhp);
511 gfs2_quota_change(dip, +1, uid, gid);
515 gfs2_quota_unlock(dip);
521 static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
522 struct gfs2_inode *ip)
524 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
525 struct gfs2_alloc *al;
527 struct buffer_head *dibh;
530 al = gfs2_alloc_get(dip);
534 error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
538 error = alloc_required = gfs2_diradd_alloc_required(&dip->i_inode, name);
539 if (alloc_required < 0)
540 goto fail_quota_locks;
541 if (alloc_required) {
542 error = gfs2_quota_check(dip, dip->i_inode.i_uid, dip->i_inode.i_gid);
544 goto fail_quota_locks;
546 al->al_requested = sdp->sd_max_dirres;
548 error = gfs2_inplace_reserve(dip);
550 goto fail_quota_locks;
552 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
553 al->al_rgd->rd_length +
555 RES_STATFS + RES_QUOTA, 0);
559 error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0);
561 goto fail_quota_locks;
564 error = gfs2_dir_add(&dip->i_inode, name, ip);
568 error = gfs2_meta_inode_buffer(ip, &dibh);
571 ip->i_inode.i_nlink = 1;
572 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
573 gfs2_dinode_out(ip, dibh->b_data);
581 if (dip->i_alloc->al_rgd)
582 gfs2_inplace_release(dip);
585 gfs2_quota_unlock(dip);
592 static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip,
593 const struct qstr *qstr)
600 err = security_inode_init_security(&ip->i_inode, &dip->i_inode, qstr,
601 &name, &value, &len);
604 if (err == -EOPNOTSUPP)
609 err = __gfs2_xattr_set(&ip->i_inode, name, value, len, 0,
610 GFS2_EATYPE_SECURITY);
618 * gfs2_createi - Create a new inode
619 * @ghs: An array of two holders
620 * @name: The name of the new file
621 * @mode: the permissions on the new inode
623 * @ghs[0] is an initialized holder for the directory
624 * @ghs[1] is the holder for the inode lock
626 * If the return value is not NULL, the glocks on both the directory and the new
627 * file are held. A transaction has been started and an inplace reservation
633 struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
634 unsigned int mode, dev_t dev)
636 struct inode *inode = NULL;
637 struct gfs2_inode *dip = ghs->gh_gl->gl_object;
638 struct inode *dir = &dip->i_inode;
639 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
640 struct gfs2_inum_host inum = { .no_addr = 0, .no_formal_ino = 0 };
643 struct buffer_head *bh = NULL;
645 if (!name->len || name->len > GFS2_FNAMESIZE)
646 return ERR_PTR(-ENAMETOOLONG);
648 gfs2_holder_reinit(LM_ST_EXCLUSIVE, 0, ghs);
649 error = gfs2_glock_nq(ghs);
653 error = create_ok(dip, name, mode);
657 error = alloc_dinode(dip, &inum.no_addr, &generation);
660 inum.no_formal_ino = generation;
662 error = gfs2_glock_nq_num(sdp, inum.no_addr, &gfs2_inode_glops,
663 LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1);
667 error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev, &bh);
671 inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode), inum.no_addr,
672 inum.no_formal_ino, 0);
676 error = gfs2_inode_refresh(GFS2_I(inode));
680 error = gfs2_acl_create(dip, inode);
684 error = gfs2_security_init(dip, GFS2_I(inode), name);
688 error = link_dinode(dip, name, GFS2_I(inode));
697 gfs2_glock_dq_uninit(ghs + 1);
698 if (inode && !IS_ERR(inode))
705 return ERR_PTR(error);
708 * gfs2_create - Create a file
709 * @dir: The directory in which to create the file
710 * @dentry: The dentry of the new file
711 * @mode: The mode of the new file
716 static int gfs2_create(struct inode *dir, struct dentry *dentry,
717 int mode, struct nameidata *nd)
719 struct gfs2_inode *dip = GFS2_I(dir);
720 struct gfs2_sbd *sdp = GFS2_SB(dir);
721 struct gfs2_holder ghs[2];
724 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
727 inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode, 0);
728 if (!IS_ERR(inode)) {
730 if (dip->i_alloc->al_rgd)
731 gfs2_inplace_release(dip);
732 gfs2_quota_unlock(dip);
734 gfs2_glock_dq_uninit_m(2, ghs);
735 mark_inode_dirty(inode);
737 } else if (PTR_ERR(inode) != -EEXIST ||
738 (nd && nd->flags & LOOKUP_EXCL)) {
739 gfs2_holder_uninit(ghs);
740 return PTR_ERR(inode);
743 inode = gfs2_lookupi(dir, &dentry->d_name, 0);
745 if (!IS_ERR(inode)) {
746 gfs2_holder_uninit(ghs);
749 gfs2_holder_uninit(ghs);
750 return PTR_ERR(inode);
755 d_instantiate(dentry, inode);
761 * gfs2_lookup - Look up a filename in a directory and return its inode
762 * @dir: The directory inode
763 * @dentry: The dentry of the new inode
764 * @nd: passed from Linux VFS, ignored by us
766 * Called by the VFS layer. Lock dir and call gfs2_lookupi()
771 static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
772 struct nameidata *nd)
774 struct inode *inode = NULL;
776 inode = gfs2_lookupi(dir, &dentry->d_name, 0);
777 if (inode && IS_ERR(inode))
778 return ERR_CAST(inode);
781 struct gfs2_glock *gl = GFS2_I(inode)->i_gl;
782 struct gfs2_holder gh;
784 error = gfs2_glock_nq_init(gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
787 return ERR_PTR(error);
789 gfs2_glock_dq_uninit(&gh);
790 return d_splice_alias(inode, dentry);
792 d_add(dentry, inode);
798 * gfs2_link - Link to a file
799 * @old_dentry: The inode to link
800 * @dir: Add link to this directory
801 * @dentry: The name of the link
803 * Link the inode in "old_dentry" into the directory "dir" with the
809 static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
810 struct dentry *dentry)
812 struct gfs2_inode *dip = GFS2_I(dir);
813 struct gfs2_sbd *sdp = GFS2_SB(dir);
814 struct inode *inode = old_dentry->d_inode;
815 struct gfs2_inode *ip = GFS2_I(inode);
816 struct gfs2_holder ghs[2];
817 struct buffer_head *dibh;
821 if (S_ISDIR(inode->i_mode))
824 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
825 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
827 error = gfs2_glock_nq(ghs); /* parent */
831 error = gfs2_glock_nq(ghs + 1); /* child */
836 if (inode->i_nlink == 0)
839 error = gfs2_permission(dir, MAY_WRITE | MAY_EXEC, 0);
843 error = gfs2_dir_check(dir, &dentry->d_name, NULL);
854 if (!dip->i_inode.i_nlink)
857 if (dip->i_entries == (u32)-1)
860 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
863 if (!ip->i_inode.i_nlink)
866 if (ip->i_inode.i_nlink == (u32)-1)
869 alloc_required = error = gfs2_diradd_alloc_required(dir, &dentry->d_name);
874 if (alloc_required) {
875 struct gfs2_alloc *al = gfs2_alloc_get(dip);
881 error = gfs2_quota_lock_check(dip);
885 al->al_requested = sdp->sd_max_dirres;
887 error = gfs2_inplace_reserve(dip);
891 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
893 2 * RES_DINODE + RES_STATFS +
898 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0);
903 error = gfs2_meta_inode_buffer(ip, &dibh);
907 error = gfs2_dir_add(dir, &dentry->d_name, ip);
911 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
912 inc_nlink(&ip->i_inode);
913 ip->i_inode.i_ctime = CURRENT_TIME;
914 gfs2_dinode_out(ip, dibh->b_data);
915 mark_inode_dirty(&ip->i_inode);
923 gfs2_inplace_release(dip);
926 gfs2_quota_unlock(dip);
931 gfs2_glock_dq(ghs + 1);
935 gfs2_holder_uninit(ghs);
936 gfs2_holder_uninit(ghs + 1);
939 d_instantiate(dentry, inode);
940 mark_inode_dirty(inode);
946 * gfs2_unlink_ok - check to see that a inode is still in a directory
947 * @dip: the directory
948 * @name: the name of the file
951 * Assumes that the lock on (at least) @dip is held.
953 * Returns: 0 if the parent/child relationship is correct, errno if it isn't
956 static int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
957 const struct gfs2_inode *ip)
961 if (IS_IMMUTABLE(&ip->i_inode) || IS_APPEND(&ip->i_inode))
964 if ((dip->i_inode.i_mode & S_ISVTX) &&
965 dip->i_inode.i_uid != current_fsuid() &&
966 ip->i_inode.i_uid != current_fsuid() && !capable(CAP_FOWNER))
969 if (IS_APPEND(&dip->i_inode))
972 error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC, 0);
976 error = gfs2_dir_check(&dip->i_inode, name, ip);
984 * gfs2_unlink_inode - Removes an inode from its parent dir and unlinks it
985 * @dip: The parent directory
986 * @name: The name of the entry in the parent directory
987 * @bh: The inode buffer for the inode to be removed
988 * @inode: The inode to be removed
990 * Called with all the locks and in a transaction. This will only be
991 * called for a directory after it has been checked to ensure it is empty.
993 * Returns: 0 on success, or an error
996 static int gfs2_unlink_inode(struct gfs2_inode *dip,
997 const struct dentry *dentry,
998 struct buffer_head *bh)
1000 struct inode *inode = dentry->d_inode;
1001 struct gfs2_inode *ip = GFS2_I(inode);
1004 error = gfs2_dir_del(dip, dentry);
1009 inode->i_ctime = CURRENT_TIME;
1010 if (S_ISDIR(inode->i_mode))
1014 gfs2_trans_add_bh(ip->i_gl, bh, 1);
1015 gfs2_dinode_out(ip, bh->b_data);
1016 mark_inode_dirty(inode);
1017 if (inode->i_nlink == 0)
1018 gfs2_unlink_di(inode);
1024 * gfs2_unlink - Unlink an inode (this does rmdir as well)
1025 * @dir: The inode of the directory containing the inode to unlink
1026 * @dentry: The file itself
1028 * This routine uses the type of the inode as a flag to figure out
1029 * whether this is an unlink or an rmdir.
1034 static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
1036 struct gfs2_inode *dip = GFS2_I(dir);
1037 struct gfs2_sbd *sdp = GFS2_SB(dir);
1038 struct inode *inode = dentry->d_inode;
1039 struct gfs2_inode *ip = GFS2_I(inode);
1040 struct buffer_head *bh;
1041 struct gfs2_holder ghs[3];
1042 struct gfs2_rgrpd *rgd;
1043 struct gfs2_holder ri_gh;
1046 error = gfs2_rindex_hold(sdp, &ri_gh);
1050 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
1051 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
1053 rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
1054 gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
1057 error = gfs2_glock_nq(ghs); /* parent */
1061 error = gfs2_glock_nq(ghs + 1); /* child */
1066 if (inode->i_nlink == 0)
1069 if (S_ISDIR(inode->i_mode)) {
1071 if (ip->i_entries > 2 || inode->i_nlink > 2)
1075 error = gfs2_glock_nq(ghs + 2); /* rgrp */
1079 error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
1083 error = gfs2_trans_begin(sdp, 2*RES_DINODE + 3*RES_LEAF + RES_RG_BIT, 0);
1087 error = gfs2_meta_inode_buffer(ip, &bh);
1091 error = gfs2_unlink_inode(dip, dentry, bh);
1095 gfs2_trans_end(sdp);
1097 gfs2_glock_dq(ghs + 2);
1099 gfs2_holder_uninit(ghs + 2);
1100 gfs2_glock_dq(ghs + 1);
1102 gfs2_holder_uninit(ghs + 1);
1105 gfs2_holder_uninit(ghs);
1106 gfs2_glock_dq_uninit(&ri_gh);
1111 * gfs2_symlink - Create a symlink
1112 * @dir: The directory to create the symlink in
1113 * @dentry: The dentry to put the symlink in
1114 * @symname: The thing which the link points to
1119 static int gfs2_symlink(struct inode *dir, struct dentry *dentry,
1120 const char *symname)
1122 struct gfs2_inode *dip = GFS2_I(dir), *ip;
1123 struct gfs2_sbd *sdp = GFS2_SB(dir);
1124 struct gfs2_holder ghs[2];
1125 struct inode *inode;
1126 struct buffer_head *dibh;
1130 /* Must be stuffed with a null terminator for gfs2_follow_link() */
1131 size = strlen(symname);
1132 if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1)
1133 return -ENAMETOOLONG;
1135 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
1137 inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO, 0);
1138 if (IS_ERR(inode)) {
1139 gfs2_holder_uninit(ghs);
1140 return PTR_ERR(inode);
1143 ip = ghs[1].gh_gl->gl_object;
1145 i_size_write(inode, size);
1147 error = gfs2_meta_inode_buffer(ip, &dibh);
1149 if (!gfs2_assert_withdraw(sdp, !error)) {
1150 gfs2_dinode_out(ip, dibh->b_data);
1151 memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname,
1156 gfs2_trans_end(sdp);
1157 if (dip->i_alloc->al_rgd)
1158 gfs2_inplace_release(dip);
1159 gfs2_quota_unlock(dip);
1160 gfs2_alloc_put(dip);
1162 gfs2_glock_dq_uninit_m(2, ghs);
1164 d_instantiate(dentry, inode);
1165 mark_inode_dirty(inode);
1171 * gfs2_mkdir - Make a directory
1172 * @dir: The parent directory of the new one
1173 * @dentry: The dentry of the new directory
1174 * @mode: The mode of the new directory
1179 static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1181 struct gfs2_inode *dip = GFS2_I(dir), *ip;
1182 struct gfs2_sbd *sdp = GFS2_SB(dir);
1183 struct gfs2_holder ghs[2];
1184 struct inode *inode;
1185 struct buffer_head *dibh;
1188 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
1190 inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode, 0);
1191 if (IS_ERR(inode)) {
1192 gfs2_holder_uninit(ghs);
1193 return PTR_ERR(inode);
1196 ip = ghs[1].gh_gl->gl_object;
1198 ip->i_inode.i_nlink = 2;
1199 i_size_write(inode, sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode));
1200 ip->i_diskflags |= GFS2_DIF_JDATA;
1203 error = gfs2_meta_inode_buffer(ip, &dibh);
1205 if (!gfs2_assert_withdraw(sdp, !error)) {
1206 struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data;
1207 struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1);
1209 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
1210 gfs2_qstr2dirent(&gfs2_qdot, GFS2_DIRENT_SIZE(gfs2_qdot.len), dent);
1211 dent->de_inum = di->di_num; /* already GFS2 endian */
1212 dent->de_type = cpu_to_be16(DT_DIR);
1213 di->di_entries = cpu_to_be32(1);
1215 dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1));
1216 gfs2_qstr2dirent(&gfs2_qdotdot, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent);
1218 gfs2_inum_out(dip, dent);
1219 dent->de_type = cpu_to_be16(DT_DIR);
1221 gfs2_dinode_out(ip, di);
1226 gfs2_trans_end(sdp);
1227 if (dip->i_alloc->al_rgd)
1228 gfs2_inplace_release(dip);
1229 gfs2_quota_unlock(dip);
1230 gfs2_alloc_put(dip);
1232 gfs2_glock_dq_uninit_m(2, ghs);
1234 d_instantiate(dentry, inode);
1235 mark_inode_dirty(inode);
1241 * gfs2_mknod - Make a special file
1242 * @dir: The directory in which the special file will reside
1243 * @dentry: The dentry of the special file
1244 * @mode: The mode of the special file
1245 * @rdev: The device specification of the special file
1249 static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode,
1252 struct gfs2_inode *dip = GFS2_I(dir);
1253 struct gfs2_sbd *sdp = GFS2_SB(dir);
1254 struct gfs2_holder ghs[2];
1255 struct inode *inode;
1257 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
1259 inode = gfs2_createi(ghs, &dentry->d_name, mode, dev);
1260 if (IS_ERR(inode)) {
1261 gfs2_holder_uninit(ghs);
1262 return PTR_ERR(inode);
1265 gfs2_trans_end(sdp);
1266 if (dip->i_alloc->al_rgd)
1267 gfs2_inplace_release(dip);
1268 gfs2_quota_unlock(dip);
1269 gfs2_alloc_put(dip);
1271 gfs2_glock_dq_uninit_m(2, ghs);
1273 d_instantiate(dentry, inode);
1274 mark_inode_dirty(inode);
1280 * gfs2_ok_to_move - check if it's ok to move a directory to another directory
1284 * Follow @to back to the root and make sure we don't encounter @this
1285 * Assumes we already hold the rename lock.
1290 static int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to)
1292 struct inode *dir = &to->i_inode;
1293 struct super_block *sb = dir->i_sb;
1300 if (dir == &this->i_inode) {
1304 if (dir == sb->s_root->d_inode) {
1309 tmp = gfs2_lookupi(dir, &gfs2_qdotdot, 1);
1311 error = PTR_ERR(tmp);
1325 * gfs2_rename - Rename a file
1326 * @odir: Parent directory of old file name
1327 * @odentry: The old dentry of the file
1328 * @ndir: Parent directory of new file name
1329 * @ndentry: The new dentry of the file
1334 static int gfs2_rename(struct inode *odir, struct dentry *odentry,
1335 struct inode *ndir, struct dentry *ndentry)
1337 struct gfs2_inode *odip = GFS2_I(odir);
1338 struct gfs2_inode *ndip = GFS2_I(ndir);
1339 struct gfs2_inode *ip = GFS2_I(odentry->d_inode);
1340 struct gfs2_inode *nip = NULL;
1341 struct gfs2_sbd *sdp = GFS2_SB(odir);
1342 struct gfs2_holder ghs[5], r_gh = { .gh_gl = NULL, }, ri_gh;
1343 struct gfs2_rgrpd *nrgd;
1344 unsigned int num_gh;
1346 int alloc_required = 0;
1350 if (ndentry->d_inode) {
1351 nip = GFS2_I(ndentry->d_inode);
1356 error = gfs2_rindex_hold(sdp, &ri_gh);
1361 error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE,
1366 if (S_ISDIR(ip->i_inode.i_mode)) {
1368 /* don't move a dirctory into it's subdir */
1369 error = gfs2_ok_to_move(ip, ndip);
1376 gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
1378 gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
1381 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
1385 gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
1387 /* grab the resource lock for unlink flag twiddling
1388 * this is the case of the target file already existing
1389 * so we unlink before doing the rename
1391 nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr);
1393 gfs2_holder_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
1396 for (x = 0; x < num_gh; x++) {
1397 error = gfs2_glock_nq(ghs + x);
1403 if (ip->i_inode.i_nlink == 0)
1406 /* Check out the old directory */
1408 error = gfs2_unlink_ok(odip, &odentry->d_name, ip);
1412 /* Check out the new directory */
1415 error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip);
1419 if (nip->i_inode.i_nlink == 0) {
1424 if (S_ISDIR(nip->i_inode.i_mode)) {
1425 if (nip->i_entries < 2) {
1426 gfs2_consist_inode(nip);
1430 if (nip->i_entries > 2) {
1436 error = gfs2_permission(ndir, MAY_WRITE | MAY_EXEC, 0);
1440 error = gfs2_dir_check(ndir, &ndentry->d_name, NULL);
1452 if (!ndip->i_inode.i_nlink) {
1456 if (ndip->i_entries == (u32)-1) {
1460 if (S_ISDIR(ip->i_inode.i_mode) &&
1461 ndip->i_inode.i_nlink == (u32)-1) {
1468 /* Check out the dir to be renamed */
1471 error = gfs2_permission(odentry->d_inode, MAY_WRITE, 0);
1477 alloc_required = gfs2_diradd_alloc_required(ndir, &ndentry->d_name);
1478 error = alloc_required;
1483 if (alloc_required) {
1484 struct gfs2_alloc *al = gfs2_alloc_get(ndip);
1490 error = gfs2_quota_lock_check(ndip);
1494 al->al_requested = sdp->sd_max_dirres;
1496 error = gfs2_inplace_reserve_ri(ndip);
1500 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
1501 gfs2_rg_blocks(al) +
1502 4 * RES_DINODE + 4 * RES_LEAF +
1503 RES_STATFS + RES_QUOTA + 4, 0);
1507 error = gfs2_trans_begin(sdp, 4 * RES_DINODE +
1508 5 * RES_LEAF + 4, 0);
1513 /* Remove the target file, if it exists */
1516 struct buffer_head *bh;
1517 error = gfs2_meta_inode_buffer(nip, &bh);
1520 error = gfs2_unlink_inode(ndip, ndentry, bh);
1525 error = gfs2_dir_mvino(ip, &gfs2_qdotdot, ndip, DT_DIR);
1529 struct buffer_head *dibh;
1530 error = gfs2_meta_inode_buffer(ip, &dibh);
1533 ip->i_inode.i_ctime = CURRENT_TIME;
1534 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
1535 gfs2_dinode_out(ip, dibh->b_data);
1539 error = gfs2_dir_del(odip, odentry);
1543 error = gfs2_dir_add(ndir, &ndentry->d_name, ip);
1548 gfs2_trans_end(sdp);
1551 gfs2_inplace_release(ndip);
1554 gfs2_quota_unlock(ndip);
1557 gfs2_alloc_put(ndip);
1560 gfs2_glock_dq(ghs + x);
1561 gfs2_holder_uninit(ghs + x);
1565 gfs2_glock_dq_uninit(&r_gh);
1567 gfs2_glock_dq_uninit(&ri_gh);
1572 * gfs2_follow_link - Follow a symbolic link
1573 * @dentry: The dentry of the link
1574 * @nd: Data that we pass to vfs_follow_link()
1576 * This can handle symlinks of any size.
1578 * Returns: 0 on success or error code
1581 static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
1583 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
1584 struct gfs2_holder i_gh;
1585 struct buffer_head *dibh;
1586 unsigned int x, size;
1590 gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh);
1591 error = gfs2_glock_nq(&i_gh);
1593 gfs2_holder_uninit(&i_gh);
1594 nd_set_link(nd, ERR_PTR(error));
1598 size = (unsigned int)i_size_read(&ip->i_inode);
1600 gfs2_consist_inode(ip);
1601 buf = ERR_PTR(-EIO);
1605 error = gfs2_meta_inode_buffer(ip, &dibh);
1607 buf = ERR_PTR(error);
1612 buf = kmalloc(x, GFP_NOFS);
1614 buf = ERR_PTR(-ENOMEM);
1616 memcpy(buf, dibh->b_data + sizeof(struct gfs2_dinode), x);
1619 gfs2_glock_dq_uninit(&i_gh);
1620 nd_set_link(nd, buf);
1624 static void gfs2_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
1626 char *s = nd_get_link(nd);
1634 * @mask: The mask to be tested
1635 * @flags: Indicates whether this is an RCU path walk or not
1637 * This may be called from the VFS directly, or from within GFS2 with the
1638 * inode locked, so we look to see if the glock is already locked and only
1639 * lock the glock if its not already been done.
1644 int gfs2_permission(struct inode *inode, int mask, unsigned int flags)
1646 struct gfs2_inode *ip;
1647 struct gfs2_holder i_gh;
1653 if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) {
1654 if (flags & IPERM_FLAG_RCU)
1656 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh);
1662 if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode))
1665 error = generic_permission(inode, mask, flags, gfs2_check_acl);
1667 gfs2_glock_dq_uninit(&i_gh);
1672 static int __gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
1674 struct inode *inode = &ip->i_inode;
1675 struct buffer_head *dibh;
1678 error = gfs2_meta_inode_buffer(ip, &dibh);
1682 setattr_copy(inode, attr);
1683 mark_inode_dirty(inode);
1684 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
1685 gfs2_dinode_out(ip, dibh->b_data);
1691 * gfs2_setattr_simple -
1698 int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
1702 if (current->journal_info)
1703 return __gfs2_setattr_simple(ip, attr);
1705 error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE, 0);
1709 error = __gfs2_setattr_simple(ip, attr);
1710 gfs2_trans_end(GFS2_SB(&ip->i_inode));
1714 static int setattr_chown(struct inode *inode, struct iattr *attr)
1716 struct gfs2_inode *ip = GFS2_I(inode);
1717 struct gfs2_sbd *sdp = GFS2_SB(inode);
1718 u32 ouid, ogid, nuid, ngid;
1721 ouid = inode->i_uid;
1722 ogid = inode->i_gid;
1723 nuid = attr->ia_uid;
1724 ngid = attr->ia_gid;
1726 if (!(attr->ia_valid & ATTR_UID) || ouid == nuid)
1727 ouid = nuid = NO_QUOTA_CHANGE;
1728 if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
1729 ogid = ngid = NO_QUOTA_CHANGE;
1731 if (!gfs2_alloc_get(ip))
1734 error = gfs2_quota_lock(ip, nuid, ngid);
1738 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
1739 error = gfs2_quota_check(ip, nuid, ngid);
1744 error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0);
1748 error = gfs2_setattr_simple(ip, attr);
1752 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
1753 u64 blocks = gfs2_get_inode_blocks(&ip->i_inode);
1754 gfs2_quota_change(ip, -blocks, ouid, ogid);
1755 gfs2_quota_change(ip, blocks, nuid, ngid);
1759 gfs2_trans_end(sdp);
1761 gfs2_quota_unlock(ip);
1768 * gfs2_setattr - Change attributes on an inode
1769 * @dentry: The dentry which is changing
1770 * @attr: The structure describing the change
1772 * The VFS layer wants to change one or more of an inodes attributes. Write
1773 * that change out to disk.
1778 static int gfs2_setattr(struct dentry *dentry, struct iattr *attr)
1780 struct inode *inode = dentry->d_inode;
1781 struct gfs2_inode *ip = GFS2_I(inode);
1782 struct gfs2_holder i_gh;
1785 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
1790 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
1793 error = inode_change_ok(inode, attr);
1797 if (attr->ia_valid & ATTR_SIZE)
1798 error = gfs2_setattr_size(inode, attr->ia_size);
1799 else if (attr->ia_valid & (ATTR_UID | ATTR_GID))
1800 error = setattr_chown(inode, attr);
1801 else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode))
1802 error = gfs2_acl_chmod(ip, attr);
1804 error = gfs2_setattr_simple(ip, attr);
1807 gfs2_glock_dq_uninit(&i_gh);
1809 mark_inode_dirty(inode);
1814 * gfs2_getattr - Read out an inode's attributes
1815 * @mnt: The vfsmount the inode is being accessed from
1816 * @dentry: The dentry to stat
1817 * @stat: The inode's stats
1819 * This may be called from the VFS directly, or from within GFS2 with the
1820 * inode locked, so we look to see if the glock is already locked and only
1821 * lock the glock if its not already been done. Note that its the NFS
1822 * readdirplus operation which causes this to be called (from filldir)
1823 * with the glock already held.
1828 static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
1831 struct inode *inode = dentry->d_inode;
1832 struct gfs2_inode *ip = GFS2_I(inode);
1833 struct gfs2_holder gh;
1837 if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) {
1838 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
1844 generic_fillattr(inode, stat);
1846 gfs2_glock_dq_uninit(&gh);
1851 static int gfs2_setxattr(struct dentry *dentry, const char *name,
1852 const void *data, size_t size, int flags)
1854 struct inode *inode = dentry->d_inode;
1855 struct gfs2_inode *ip = GFS2_I(inode);
1856 struct gfs2_holder gh;
1859 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
1860 ret = gfs2_glock_nq(&gh);
1862 ret = generic_setxattr(dentry, name, data, size, flags);
1865 gfs2_holder_uninit(&gh);
1869 static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name,
1870 void *data, size_t size)
1872 struct inode *inode = dentry->d_inode;
1873 struct gfs2_inode *ip = GFS2_I(inode);
1874 struct gfs2_holder gh;
1877 gfs2_holder_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
1878 ret = gfs2_glock_nq(&gh);
1880 ret = generic_getxattr(dentry, name, data, size);
1883 gfs2_holder_uninit(&gh);
1887 static int gfs2_removexattr(struct dentry *dentry, const char *name)
1889 struct inode *inode = dentry->d_inode;
1890 struct gfs2_inode *ip = GFS2_I(inode);
1891 struct gfs2_holder gh;
1894 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
1895 ret = gfs2_glock_nq(&gh);
1897 ret = generic_removexattr(dentry, name);
1900 gfs2_holder_uninit(&gh);
1904 static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
1907 struct gfs2_inode *ip = GFS2_I(inode);
1908 struct gfs2_holder gh;
1911 ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC);
1915 mutex_lock(&inode->i_mutex);
1917 ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh);
1921 if (gfs2_is_stuffed(ip)) {
1922 u64 phys = ip->i_no_addr << inode->i_blkbits;
1923 u64 size = i_size_read(inode);
1924 u32 flags = FIEMAP_EXTENT_LAST|FIEMAP_EXTENT_NOT_ALIGNED|
1925 FIEMAP_EXTENT_DATA_INLINE;
1926 phys += sizeof(struct gfs2_dinode);
1928 if (start + len > size)
1931 ret = fiemap_fill_next_extent(fieinfo, start, phys,
1936 ret = __generic_block_fiemap(inode, fieinfo, start, len,
1940 gfs2_glock_dq_uninit(&gh);
1942 mutex_unlock(&inode->i_mutex);
1946 const struct inode_operations gfs2_file_iops = {
1947 .permission = gfs2_permission,
1948 .setattr = gfs2_setattr,
1949 .getattr = gfs2_getattr,
1950 .setxattr = gfs2_setxattr,
1951 .getxattr = gfs2_getxattr,
1952 .listxattr = gfs2_listxattr,
1953 .removexattr = gfs2_removexattr,
1954 .fiemap = gfs2_fiemap,
1957 const struct inode_operations gfs2_dir_iops = {
1958 .create = gfs2_create,
1959 .lookup = gfs2_lookup,
1961 .unlink = gfs2_unlink,
1962 .symlink = gfs2_symlink,
1963 .mkdir = gfs2_mkdir,
1964 .rmdir = gfs2_unlink,
1965 .mknod = gfs2_mknod,
1966 .rename = gfs2_rename,
1967 .permission = gfs2_permission,
1968 .setattr = gfs2_setattr,
1969 .getattr = gfs2_getattr,
1970 .setxattr = gfs2_setxattr,
1971 .getxattr = gfs2_getxattr,
1972 .listxattr = gfs2_listxattr,
1973 .removexattr = gfs2_removexattr,
1974 .fiemap = gfs2_fiemap,
1977 const struct inode_operations gfs2_symlink_iops = {
1978 .readlink = generic_readlink,
1979 .follow_link = gfs2_follow_link,
1980 .put_link = gfs2_put_link,
1981 .permission = gfs2_permission,
1982 .setattr = gfs2_setattr,
1983 .getattr = gfs2_getattr,
1984 .setxattr = gfs2_setxattr,
1985 .getxattr = gfs2_getxattr,
1986 .listxattr = gfs2_listxattr,
1987 .removexattr = gfs2_removexattr,
1988 .fiemap = gfs2_fiemap,