1 /*****************************************************************************\
2 * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
3 * Copyright (C) 2007 The Regents of the University of California.
4 * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
5 * Written by Brian Behlendorf <behlendorf1@llnl.gov>.
8 * This file is part of the SPL, Solaris Porting Layer.
9 * For details, see <http://zfsonlinux.org/>.
11 * The SPL is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
16 * The SPL is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 * You should have received a copy of the GNU General Public License along
22 * with the SPL. If not, see <http://www.gnu.org/licenses/>.
23 *****************************************************************************
24 * Solaris Porting Layer (SPL) Vnode Implementation.
25 \*****************************************************************************/
27 #include <sys/vnode.h>
28 #include <linux/falloc.h>
29 #include <spl-debug.h>
31 #ifdef SS_DEBUG_SUBSYS
32 #undef SS_DEBUG_SUBSYS
35 #define SS_DEBUG_SUBSYS SS_VNODE
37 vnode_t
*rootdir
= (vnode_t
*)0xabcd1234;
38 EXPORT_SYMBOL(rootdir
);
40 static spl_kmem_cache_t
*vn_cache
;
41 static spl_kmem_cache_t
*vn_file_cache
;
43 static DEFINE_SPINLOCK(vn_file_lock
);
44 static LIST_HEAD(vn_file_list
);
46 #ifdef HAVE_KERN_PATH_PARENT_HEADER
47 #ifndef HAVE_KERN_PATH_PARENT_SYMBOL
48 kern_path_parent_t kern_path_parent_fn
= SYMBOL_POISON
;
49 EXPORT_SYMBOL(kern_path_parent_fn
);
50 #endif /* HAVE_KERN_PATH_PARENT_SYMBOL */
51 #endif /* HAVE_KERN_PATH_PARENT_HEADER */
53 #ifdef HAVE_KERN_PATH_LOCKED
54 kern_path_locked_t kern_path_locked_fn
= SYMBOL_POISON
;
55 #endif /* HAVE_KERN_PATH_LOCKED */
58 vn_mode_to_vtype(mode_t mode
)
85 } /* vn_mode_to_vtype() */
86 EXPORT_SYMBOL(vn_mode_to_vtype
);
89 vn_vtype_to_mode(vtype_t vtype
)
113 } /* vn_vtype_to_mode() */
114 EXPORT_SYMBOL(vn_vtype_to_mode
);
122 vp
= kmem_cache_alloc(vn_cache
, flag
);
130 EXPORT_SYMBOL(vn_alloc
);
136 kmem_cache_free(vn_cache
, vp
);
139 EXPORT_SYMBOL(vn_free
);
142 vn_open(const char *path
, uio_seg_t seg
, int flags
, int mode
,
143 vnode_t
**vpp
, int x1
, void *x2
)
147 int rc
, saved_umask
= 0;
152 ASSERT(flags
& (FWRITE
| FREAD
));
153 ASSERT(seg
== UIO_SYSSPACE
);
157 if (!(flags
& FCREAT
) && (flags
& FWRITE
))
160 /* Note for filp_open() the two low bits must be remapped to mean:
161 * 01 - read-only -> 00 read-only
162 * 10 - write-only -> 01 write-only
163 * 11 - read-write -> 10 read-write
168 saved_umask
= xchg(¤t
->fs
->umask
, 0);
170 fp
= filp_open(path
, flags
, mode
);
173 (void)xchg(¤t
->fs
->umask
, saved_umask
);
176 SRETURN(-PTR_ERR(fp
));
178 rc
= vfs_getattr(fp
->f_vfsmnt
, fp
->f_dentry
, &stat
);
184 vp
= vn_alloc(KM_SLEEP
);
190 saved_gfp
= mapping_gfp_mask(fp
->f_mapping
);
191 mapping_set_gfp_mask(fp
->f_mapping
, saved_gfp
& ~(__GFP_IO
|__GFP_FS
));
193 mutex_enter(&vp
->v_lock
);
194 vp
->v_type
= vn_mode_to_vtype(stat
.mode
);
196 vp
->v_gfp_mask
= saved_gfp
;
198 mutex_exit(&vp
->v_lock
);
202 EXPORT_SYMBOL(vn_open
);
205 vn_openat(const char *path
, uio_seg_t seg
, int flags
, int mode
,
206 vnode_t
**vpp
, int x1
, void *x2
, vnode_t
*vp
, int fd
)
212 ASSERT(vp
== rootdir
);
214 len
= strlen(path
) + 2;
215 realpath
= kmalloc(len
, GFP_KERNEL
);
219 (void)snprintf(realpath
, len
, "/%s", path
);
220 rc
= vn_open(realpath
, seg
, flags
, mode
, vpp
, x1
, x2
);
225 EXPORT_SYMBOL(vn_openat
);
228 vn_rdwr(uio_rw_t uio
, vnode_t
*vp
, void *addr
, ssize_t len
, offset_t off
,
229 uio_seg_t seg
, int ioflag
, rlim64_t x2
, void *x3
, ssize_t
*residp
)
232 mm_segment_t saved_fs
;
237 ASSERT(uio
== UIO_WRITE
|| uio
== UIO_READ
);
240 ASSERT(seg
== UIO_SYSSPACE
);
241 ASSERT((ioflag
& ~FAPPEND
) == 0);
242 ASSERT(x2
== RLIM64_INFINITY
);
247 if (ioflag
& FAPPEND
)
250 /* Writable user data segment must be briefly increased for this
251 * process so we can use the user space read call paths to write
252 * in to memory allocated by the kernel. */
257 rc
= vfs_write(fp
, addr
, len
, &offset
);
259 rc
= vfs_read(fp
, addr
, len
, &offset
);
276 EXPORT_SYMBOL(vn_rdwr
);
279 vn_close(vnode_t
*vp
, int flags
, int x1
, int x2
, void *x3
, void *x4
)
287 mapping_set_gfp_mask(vp
->v_file
->f_mapping
, vp
->v_gfp_mask
);
288 rc
= filp_close(vp
->v_file
, 0);
293 EXPORT_SYMBOL(vn_close
);
295 /* vn_seek() does not actually seek it only performs bounds checking on the
296 * proposed seek. We perform minimal checking and allow vn_rdwr() to catch
297 * anything more serious. */
299 vn_seek(vnode_t
*vp
, offset_t ooff
, offset_t
*noffp
, void *ct
)
301 return ((*noffp
< 0 || *noffp
> MAXOFFSET_T
) ? EINVAL
: 0);
303 EXPORT_SYMBOL(vn_seek
);
305 #ifdef HAVE_KERN_PATH_LOCKED
306 /* Based on do_unlinkat() from linux/fs/namei.c */
308 vn_remove(const char *path
, uio_seg_t seg
, int flags
)
310 struct dentry
*dentry
;
312 struct inode
*inode
= NULL
;
316 ASSERT(seg
== UIO_SYSSPACE
);
317 ASSERT(flags
== RMFILE
);
319 dentry
= spl_kern_path_locked(path
, &parent
);
320 rc
= PTR_ERR(dentry
);
321 if (!IS_ERR(dentry
)) {
322 if (parent
.dentry
->d_name
.name
[parent
.dentry
->d_name
.len
])
323 SGOTO(slashes
, rc
= 0);
325 inode
= dentry
->d_inode
;
327 SGOTO(slashes
, rc
= 0);
332 rc
= vfs_unlink(parent
.dentry
->d_inode
, dentry
);
339 spl_inode_unlock(parent
.dentry
->d_inode
);
341 iput(inode
); /* truncate the inode here */
347 rc
= !dentry
->d_inode
? -ENOENT
:
348 S_ISDIR(dentry
->d_inode
->i_mode
) ? -EISDIR
: -ENOTDIR
;
351 EXPORT_SYMBOL(vn_remove
);
353 /* Based on do_rename() from linux/fs/namei.c */
355 vn_rename(const char *oldname
, const char *newname
, int x1
)
357 struct dentry
*old_dir
, *new_dir
;
358 struct dentry
*old_dentry
, *new_dentry
;
360 struct path old_parent
, new_parent
;
364 old_dentry
= spl_kern_path_locked(oldname
, &old_parent
);
365 if (IS_ERR(old_dentry
))
366 SGOTO(exit
, rc
= PTR_ERR(old_dentry
));
368 spl_inode_unlock(old_parent
.dentry
->d_inode
);
370 new_dentry
= spl_kern_path_locked(newname
, &new_parent
);
371 if (IS_ERR(new_dentry
))
372 SGOTO(exit2
, rc
= PTR_ERR(new_dentry
));
374 spl_inode_unlock(new_parent
.dentry
->d_inode
);
377 if (old_parent
.mnt
!= new_parent
.mnt
)
380 old_dir
= old_parent
.dentry
;
381 new_dir
= new_parent
.dentry
;
382 trap
= lock_rename(new_dir
, old_dir
);
384 /* source should not be ancestor of target */
386 if (old_dentry
== trap
)
389 /* target should not be an ancestor of source */
391 if (new_dentry
== trap
)
394 /* source must exist */
396 if (!old_dentry
->d_inode
)
399 /* unless the source is a directory trailing slashes give -ENOTDIR */
400 if (!S_ISDIR(old_dentry
->d_inode
->i_mode
)) {
402 if (old_dentry
->d_name
.name
[old_dentry
->d_name
.len
])
404 if (new_dentry
->d_name
.name
[new_dentry
->d_name
.len
])
408 #ifdef HAVE_4ARGS_VFS_RENAME
409 rc
= vfs_rename(old_dir
->d_inode
, old_dentry
,
410 new_dir
->d_inode
, new_dentry
);
412 rc
= vfs_rename(old_dir
->d_inode
, old_dentry
, oldnd
.nd_mnt
,
413 new_dir
->d_inode
, new_dentry
, newnd
.nd_mnt
);
414 #endif /* HAVE_4ARGS_VFS_RENAME */
416 unlock_rename(new_dir
, old_dir
);
419 path_put(&new_parent
);
422 path_put(&old_parent
);
426 EXPORT_SYMBOL(vn_rename
);
429 static struct dentry
*
430 vn_lookup_hash(struct nameidata
*nd
)
432 return lookup_one_len((const char *)nd
->last
.name
,
433 nd
->nd_dentry
, nd
->last
.len
);
434 } /* lookup_hash() */
437 vn_path_release(struct nameidata
*nd
)
443 /* Modified do_unlinkat() from linux/fs/namei.c, only uses exported symbols */
445 vn_remove(const char *path
, uio_seg_t seg
, int flags
)
447 struct dentry
*dentry
;
449 struct inode
*inode
= NULL
;
453 ASSERT(seg
== UIO_SYSSPACE
);
454 ASSERT(flags
== RMFILE
);
456 rc
= spl_kern_path_parent(path
, &nd
);
461 if (nd
.last_type
!= LAST_NORM
)
464 spl_inode_lock_nested(nd
.nd_dentry
->d_inode
, I_MUTEX_PARENT
);
465 dentry
= vn_lookup_hash(&nd
);
466 rc
= PTR_ERR(dentry
);
467 if (!IS_ERR(dentry
)) {
468 /* Why not before? Because we want correct rc value */
469 if (nd
.last
.name
[nd
.last
.len
])
472 inode
= dentry
->d_inode
;
474 atomic_inc(&inode
->i_count
);
475 #ifdef HAVE_2ARGS_VFS_UNLINK
476 rc
= vfs_unlink(nd
.nd_dentry
->d_inode
, dentry
);
478 rc
= vfs_unlink(nd
.nd_dentry
->d_inode
, dentry
, nd
.nd_mnt
);
479 #endif /* HAVE_2ARGS_VFS_UNLINK */
484 spl_inode_unlock(nd
.nd_dentry
->d_inode
);
486 iput(inode
); /* truncate the inode here */
488 vn_path_release(&nd
);
493 rc
= !dentry
->d_inode
? -ENOENT
:
494 S_ISDIR(dentry
->d_inode
->i_mode
) ? -EISDIR
: -ENOTDIR
;
497 EXPORT_SYMBOL(vn_remove
);
499 /* Modified do_rename() from linux/fs/namei.c, only uses exported symbols */
501 vn_rename(const char *oldname
, const char *newname
, int x1
)
503 struct dentry
*old_dir
, *new_dir
;
504 struct dentry
*old_dentry
, *new_dentry
;
506 struct nameidata oldnd
, newnd
;
510 rc
= spl_kern_path_parent(oldname
, &oldnd
);
514 rc
= spl_kern_path_parent(newname
, &newnd
);
519 if (oldnd
.nd_mnt
!= newnd
.nd_mnt
)
522 old_dir
= oldnd
.nd_dentry
;
524 if (oldnd
.last_type
!= LAST_NORM
)
527 new_dir
= newnd
.nd_dentry
;
528 if (newnd
.last_type
!= LAST_NORM
)
531 trap
= lock_rename(new_dir
, old_dir
);
533 old_dentry
= vn_lookup_hash(&oldnd
);
535 rc
= PTR_ERR(old_dentry
);
536 if (IS_ERR(old_dentry
))
539 /* source must exist */
541 if (!old_dentry
->d_inode
)
544 /* unless the source is a directory trailing slashes give -ENOTDIR */
545 if (!S_ISDIR(old_dentry
->d_inode
->i_mode
)) {
547 if (oldnd
.last
.name
[oldnd
.last
.len
])
549 if (newnd
.last
.name
[newnd
.last
.len
])
553 /* source should not be ancestor of target */
555 if (old_dentry
== trap
)
558 new_dentry
= vn_lookup_hash(&newnd
);
559 rc
= PTR_ERR(new_dentry
);
560 if (IS_ERR(new_dentry
))
563 /* target should not be an ancestor of source */
565 if (new_dentry
== trap
)
568 #ifdef HAVE_4ARGS_VFS_RENAME
569 rc
= vfs_rename(old_dir
->d_inode
, old_dentry
,
570 new_dir
->d_inode
, new_dentry
);
572 rc
= vfs_rename(old_dir
->d_inode
, old_dentry
, oldnd
.nd_mnt
,
573 new_dir
->d_inode
, new_dentry
, newnd
.nd_mnt
);
574 #endif /* HAVE_4ARGS_VFS_RENAME */
580 unlock_rename(new_dir
, old_dir
);
582 vn_path_release(&newnd
);
584 vn_path_release(&oldnd
);
588 EXPORT_SYMBOL(vn_rename
);
589 #endif /* HAVE_KERN_PATH_LOCKED */
592 vn_getattr(vnode_t
*vp
, vattr_t
*vap
, int flags
, void *x3
, void *x4
)
605 rc
= vfs_getattr(fp
->f_vfsmnt
, fp
->f_dentry
, &stat
);
609 vap
->va_type
= vn_mode_to_vtype(stat
.mode
);
610 vap
->va_mode
= stat
.mode
;
611 vap
->va_uid
= stat
.uid
;
612 vap
->va_gid
= stat
.gid
;
614 vap
->va_nodeid
= stat
.ino
;
615 vap
->va_nlink
= stat
.nlink
;
616 vap
->va_size
= stat
.size
;
617 vap
->va_blksize
= stat
.blksize
;
618 vap
->va_atime
= stat
.atime
;
619 vap
->va_mtime
= stat
.mtime
;
620 vap
->va_ctime
= stat
.ctime
;
621 vap
->va_rdev
= stat
.rdev
;
622 vap
->va_nblocks
= stat
.blocks
;
626 EXPORT_SYMBOL(vn_getattr
);
628 int vn_fsync(vnode_t
*vp
, int flags
, void *x3
, void *x4
)
639 SRETURN(-spl_filp_fsync(vp
->v_file
, datasync
));
641 EXPORT_SYMBOL(vn_fsync
);
643 int vn_space(vnode_t
*vp
, int cmd
, struct flock
*bfp
, int flag
,
644 offset_t offset
, void *x6
, void *x7
)
646 int error
= EOPNOTSUPP
;
649 if (cmd
!= F_FREESP
|| bfp
->l_whence
!= 0)
654 ASSERT(bfp
->l_start
>= 0 && bfp
->l_len
> 0);
656 #ifdef FALLOC_FL_PUNCH_HOLE
658 * When supported by the underlying file system preferentially
659 * use the fallocate() callback to preallocate the space.
661 error
= -spl_filp_fallocate(vp
->v_file
,
662 FALLOC_FL_KEEP_SIZE
| FALLOC_FL_PUNCH_HOLE
,
663 bfp
->l_start
, bfp
->l_len
);
668 #ifdef HAVE_INODE_TRUNCATE_RANGE
669 if (vp
->v_file
->f_dentry
&& vp
->v_file
->f_dentry
->d_inode
&&
670 vp
->v_file
->f_dentry
->d_inode
->i_op
&&
671 vp
->v_file
->f_dentry
->d_inode
->i_op
->truncate_range
) {
672 off_t end
= bfp
->l_start
+ bfp
->l_len
;
674 * Judging from the code in shmem_truncate_range(),
675 * it seems the kernel expects the end offset to be
676 * inclusive and aligned to the end of a page.
678 if (end
% PAGE_SIZE
!= 0) {
679 end
&= ~(off_t
)(PAGE_SIZE
- 1);
680 if (end
<= bfp
->l_start
)
685 vp
->v_file
->f_dentry
->d_inode
->i_op
->truncate_range(
686 vp
->v_file
->f_dentry
->d_inode
,
695 EXPORT_SYMBOL(vn_space
);
697 /* Function must be called while holding the vn_file_lock */
703 ASSERT(spin_is_locked(&vn_file_lock
));
705 list_for_each_entry(fp
, &vn_file_list
, f_list
) {
706 if (fd
== fp
->f_fd
&& fp
->f_task
== current
) {
707 ASSERT(atomic_read(&fp
->f_ref
) != 0);
725 /* Already open just take an extra reference */
726 spin_lock(&vn_file_lock
);
730 atomic_inc(&fp
->f_ref
);
731 spin_unlock(&vn_file_lock
);
735 spin_unlock(&vn_file_lock
);
737 /* File was not yet opened create the object and setup */
738 fp
= kmem_cache_alloc(vn_file_cache
, KM_SLEEP
);
742 mutex_enter(&fp
->f_lock
);
745 fp
->f_task
= current
;
747 atomic_inc(&fp
->f_ref
);
751 SGOTO(out_mutex
, rc
);
753 vp
= vn_alloc(KM_SLEEP
);
757 if (vfs_getattr(lfp
->f_vfsmnt
, lfp
->f_dentry
, &stat
))
758 SGOTO(out_vnode
, rc
);
760 mutex_enter(&vp
->v_lock
);
761 vp
->v_type
= vn_mode_to_vtype(stat
.mode
);
763 mutex_exit(&vp
->v_lock
);
768 /* Put it on the tracking list */
769 spin_lock(&vn_file_lock
);
770 list_add(&fp
->f_list
, &vn_file_list
);
771 spin_unlock(&vn_file_lock
);
773 mutex_exit(&fp
->f_lock
);
781 mutex_exit(&fp
->f_lock
);
782 kmem_cache_free(vn_file_cache
, fp
);
788 static void releasef_locked(file_t
*fp
)
793 /* Unlinked from list, no refs, safe to free outside mutex */
795 vn_free(fp
->f_vnode
);
797 kmem_cache_free(vn_file_cache
, fp
);
806 spin_lock(&vn_file_lock
);
809 atomic_dec(&fp
->f_ref
);
810 if (atomic_read(&fp
->f_ref
) > 0) {
811 spin_unlock(&vn_file_lock
);
816 list_del(&fp
->f_list
);
819 spin_unlock(&vn_file_lock
);
824 EXPORT_SYMBOL(releasef
);
826 #ifndef HAVE_SET_FS_PWD
827 # ifdef HAVE_2ARGS_SET_FS_PWD
828 /* Used from 2.6.25 - 2.6.31+ */
830 set_fs_pwd(struct fs_struct
*fs
, struct path
*path
)
834 # ifdef HAVE_FS_STRUCT_SPINLOCK
835 spin_lock(&fs
->lock
);
839 spin_unlock(&fs
->lock
);
841 write_lock(&fs
->lock
);
845 write_unlock(&fs
->lock
);
846 # endif /* HAVE_FS_STRUCT_SPINLOCK */
852 /* Used from 2.6.11 - 2.6.24 */
854 set_fs_pwd(struct fs_struct
*fs
, struct vfsmount
*mnt
, struct dentry
*dentry
)
856 struct dentry
*old_pwd
;
857 struct vfsmount
*old_pwdmnt
;
859 write_lock(&fs
->lock
);
861 old_pwdmnt
= fs
->pwdmnt
;
862 fs
->pwdmnt
= mntget(mnt
);
863 fs
->pwd
= dget(dentry
);
864 write_unlock(&fs
->lock
);
871 # endif /* HAVE_2ARGS_SET_FS_PWD */
872 #endif /* HAVE_SET_FS_PWD */
875 vn_set_pwd(const char *filename
)
877 #if defined(HAVE_2ARGS_SET_FS_PWD) && defined(HAVE_USER_PATH_DIR)
881 #endif /* HAVE_2ARGS_SET_FS_PWD */
882 mm_segment_t saved_fs
;
887 * user_path_dir() and __user_walk() both expect 'filename' to be
888 * a user space address so we must briefly increase the data segment
889 * size to ensure strncpy_from_user() does not fail with -EFAULT.
894 #ifdef HAVE_2ARGS_SET_FS_PWD
895 # ifdef HAVE_USER_PATH_DIR
896 rc
= user_path_dir(filename
, &path
);
900 rc
= inode_permission(path
.dentry
->d_inode
, MAY_EXEC
| MAY_ACCESS
);
902 SGOTO(dput_and_out
, rc
);
904 set_fs_pwd(current
->fs
, &path
);
909 rc
= __user_walk(filename
,
910 LOOKUP_FOLLOW
|LOOKUP_DIRECTORY
|LOOKUP_CHDIR
, &nd
);
914 rc
= vfs_permission(&nd
, MAY_EXEC
);
916 SGOTO(dput_and_out
, rc
);
918 set_fs_pwd(current
->fs
, &nd
.path
);
922 # endif /* HAVE_USER_PATH_DIR */
924 rc
= __user_walk(filename
,
925 LOOKUP_FOLLOW
|LOOKUP_DIRECTORY
|LOOKUP_CHDIR
, &nd
);
929 rc
= vfs_permission(&nd
, MAY_EXEC
);
931 SGOTO(dput_and_out
, rc
);
933 set_fs_pwd(current
->fs
, nd
.nd_mnt
, nd
.nd_dentry
);
936 vn_path_release(&nd
);
937 #endif /* HAVE_2ARGS_SET_FS_PWD */
943 EXPORT_SYMBOL(vn_set_pwd
);
946 vn_cache_constructor(void *buf
, void *cdrarg
, int kmflags
)
948 struct vnode
*vp
= buf
;
950 mutex_init(&vp
->v_lock
, NULL
, MUTEX_DEFAULT
, NULL
);
953 } /* vn_cache_constructor() */
956 vn_cache_destructor(void *buf
, void *cdrarg
)
958 struct vnode
*vp
= buf
;
960 mutex_destroy(&vp
->v_lock
);
961 } /* vn_cache_destructor() */
964 vn_file_cache_constructor(void *buf
, void *cdrarg
, int kmflags
)
968 atomic_set(&fp
->f_ref
, 0);
969 mutex_init(&fp
->f_lock
, NULL
, MUTEX_DEFAULT
, NULL
);
970 INIT_LIST_HEAD(&fp
->f_list
);
973 } /* file_cache_constructor() */
976 vn_file_cache_destructor(void *buf
, void *cdrarg
)
980 mutex_destroy(&fp
->f_lock
);
981 } /* vn_file_cache_destructor() */
983 int spl_vn_init_kallsyms_lookup(void)
985 #ifdef HAVE_KERN_PATH_PARENT_HEADER
986 #ifndef HAVE_KERN_PATH_PARENT_SYMBOL
987 kern_path_parent_fn
= (kern_path_parent_t
)
988 spl_kallsyms_lookup_name("kern_path_parent");
989 if (!kern_path_parent_fn
) {
990 printk(KERN_ERR
"Error: Unknown symbol kern_path_parent\n");
993 #endif /* HAVE_KERN_PATH_PARENT_SYMBOL */
994 #endif /* HAVE_KERN_PATH_PARENT_HEADER */
996 #ifdef HAVE_KERN_PATH_LOCKED
997 kern_path_locked_fn
= (kern_path_locked_t
)
998 spl_kallsyms_lookup_name("kern_path_locked");
999 if (!kern_path_locked_fn
) {
1000 printk(KERN_ERR
"Error: Unknown symbol kern_path_locked\n");
1012 vn_cache
= kmem_cache_create("spl_vn_cache",
1013 sizeof(struct vnode
), 64,
1014 vn_cache_constructor
,
1015 vn_cache_destructor
,
1016 NULL
, NULL
, NULL
, KMC_KMEM
);
1018 vn_file_cache
= kmem_cache_create("spl_vn_file_cache",
1020 vn_file_cache_constructor
,
1021 vn_file_cache_destructor
,
1022 NULL
, NULL
, NULL
, KMC_KMEM
);
1029 file_t
*fp
, *next_fp
;
1033 spin_lock(&vn_file_lock
);
1035 list_for_each_entry_safe(fp
, next_fp
, &vn_file_list
, f_list
) {
1036 list_del(&fp
->f_list
);
1037 releasef_locked(fp
);
1041 spin_unlock(&vn_file_lock
);
1044 SWARN("Warning %d files leaked\n", leaked
);
1046 kmem_cache_destroy(vn_file_cache
);
1047 kmem_cache_destroy(vn_cache
);