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authorTejun Heo <tj@kernel.org>2013-12-11 14:11:55 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-12-11 20:39:20 -0500
commitc525aaddc366df23eb095d58a2bdf11cce62a98b (patch)
tree4f1e5e85e619e46daef45537bd5926925587b463 /fs/kernfs
parentadc5e8b58f4886d45f79f4ff41a09001a76a6b12 (diff)
kernfs: s/sysfs/kernfs/ in various data structures
kernfs has just been separated out from sysfs and we're already in full conflict mode. Nothing can make the situation any worse. Let's take the chance to name things properly. This patch performs the following renames. * s/sysfs_open_dirent/kernfs_open_node/ * s/sysfs_open_file/kernfs_open_file/ * s/sysfs_inode_attrs/kernfs_iattrs/ * s/sysfs_addrm_cxt/kernfs_addrm_cxt/ * s/sysfs_super_info/kernfs_super_info/ * s/sysfs_info()/kernfs_info()/ * s/sysfs_open_dirent_lock/kernfs_open_node_lock/ * s/sysfs_open_file_mutex/kernfs_open_file_mutex/ * s/sysfs_of()/kernfs_of()/ This patch is strictly rename only and doesn't introduce any functional difference. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/kernfs')
-rw-r--r--fs/kernfs/dir.c28
-rw-r--r--fs/kernfs/file.c172
-rw-r--r--fs/kernfs/inode.c30
-rw-r--r--fs/kernfs/kernfs-internal.h20
-rw-r--r--fs/kernfs/mount.c14
-rw-r--r--fs/kernfs/symlink.c2
6 files changed, 133 insertions, 133 deletions
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c
index 51fff9d2b334..d038bb204b54 100644
--- a/fs/kernfs/dir.c
+++ b/fs/kernfs/dir.c
@@ -295,7 +295,7 @@ static int sysfs_dentry_revalidate(struct dentry *dentry, unsigned int flags)
295 295
296 /* The sysfs dirent has been moved to a different namespace */ 296 /* The sysfs dirent has been moved to a different namespace */
297 if (kn->parent && kernfs_ns_enabled(kn->parent) && 297 if (kn->parent && kernfs_ns_enabled(kn->parent) &&
298 sysfs_info(dentry->d_sb)->ns != kn->ns) 298 kernfs_info(dentry->d_sb)->ns != kn->ns)
299 goto out_bad; 299 goto out_bad;
300 300
301 mutex_unlock(&sysfs_mutex); 301 mutex_unlock(&sysfs_mutex);
@@ -375,7 +375,7 @@ struct kernfs_node *sysfs_new_dirent(struct kernfs_root *root,
375 375
376/** 376/**
377 * sysfs_addrm_start - prepare for kernfs_node add/remove 377 * sysfs_addrm_start - prepare for kernfs_node add/remove
378 * @acxt: pointer to sysfs_addrm_cxt to be used 378 * @acxt: pointer to kernfs_addrm_cxt to be used
379 * 379 *
380 * This function is called when the caller is about to add or remove 380 * This function is called when the caller is about to add or remove
381 * kernfs_node. This function acquires sysfs_mutex. @acxt is used to 381 * kernfs_node. This function acquires sysfs_mutex. @acxt is used to
@@ -385,7 +385,7 @@ struct kernfs_node *sysfs_new_dirent(struct kernfs_root *root,
385 * Kernel thread context (may sleep). sysfs_mutex is locked on 385 * Kernel thread context (may sleep). sysfs_mutex is locked on
386 * return. 386 * return.
387 */ 387 */
388void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt) 388void sysfs_addrm_start(struct kernfs_addrm_cxt *acxt)
389 __acquires(sysfs_mutex) 389 __acquires(sysfs_mutex)
390{ 390{
391 memset(acxt, 0, sizeof(*acxt)); 391 memset(acxt, 0, sizeof(*acxt));
@@ -414,11 +414,11 @@ void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt)
414 * 0 on success, -EEXIST if entry with the given name already 414 * 0 on success, -EEXIST if entry with the given name already
415 * exists. 415 * exists.
416 */ 416 */
417int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct kernfs_node *kn, 417int sysfs_add_one(struct kernfs_addrm_cxt *acxt, struct kernfs_node *kn,
418 struct kernfs_node *parent) 418 struct kernfs_node *parent)
419{ 419{
420 bool has_ns = kernfs_ns_enabled(parent); 420 bool has_ns = kernfs_ns_enabled(parent);
421 struct sysfs_inode_attrs *ps_iattr; 421 struct kernfs_iattrs *ps_iattr;
422 int ret; 422 int ret;
423 423
424 if (has_ns != (bool)kn->ns) { 424 if (has_ns != (bool)kn->ns) {
@@ -466,10 +466,10 @@ int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct kernfs_node *kn,
466 * LOCKING: 466 * LOCKING:
467 * Determined by sysfs_addrm_start(). 467 * Determined by sysfs_addrm_start().
468 */ 468 */
469static void sysfs_remove_one(struct sysfs_addrm_cxt *acxt, 469static void sysfs_remove_one(struct kernfs_addrm_cxt *acxt,
470 struct kernfs_node *kn) 470 struct kernfs_node *kn)
471{ 471{
472 struct sysfs_inode_attrs *ps_iattr; 472 struct kernfs_iattrs *ps_iattr;
473 473
474 /* 474 /*
475 * Removal can be called multiple times on the same node. Only the 475 * Removal can be called multiple times on the same node. Only the
@@ -505,7 +505,7 @@ static void sysfs_remove_one(struct sysfs_addrm_cxt *acxt,
505 * LOCKING: 505 * LOCKING:
506 * sysfs_mutex is released. 506 * sysfs_mutex is released.
507 */ 507 */
508void sysfs_addrm_finish(struct sysfs_addrm_cxt *acxt) 508void sysfs_addrm_finish(struct kernfs_addrm_cxt *acxt)
509 __releases(sysfs_mutex) 509 __releases(sysfs_mutex)
510{ 510{
511 /* release resources acquired by sysfs_addrm_start() */ 511 /* release resources acquired by sysfs_addrm_start() */
@@ -649,7 +649,7 @@ struct kernfs_node *kernfs_create_dir_ns(struct kernfs_node *parent,
649 const void *ns) 649 const void *ns)
650{ 650{
651 umode_t mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO; 651 umode_t mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO;
652 struct sysfs_addrm_cxt acxt; 652 struct kernfs_addrm_cxt acxt;
653 struct kernfs_node *kn; 653 struct kernfs_node *kn;
654 int rc; 654 int rc;
655 655
@@ -686,7 +686,7 @@ static struct dentry *sysfs_lookup(struct inode *dir, struct dentry *dentry,
686 mutex_lock(&sysfs_mutex); 686 mutex_lock(&sysfs_mutex);
687 687
688 if (kernfs_ns_enabled(parent)) 688 if (kernfs_ns_enabled(parent))
689 ns = sysfs_info(dir->i_sb)->ns; 689 ns = kernfs_info(dir->i_sb)->ns;
690 690
691 kn = kernfs_find_ns(parent, dentry->d_name.name, ns); 691 kn = kernfs_find_ns(parent, dentry->d_name.name, ns);
692 692
@@ -778,7 +778,7 @@ static struct kernfs_node *sysfs_next_descendant_post(struct kernfs_node *pos,
778 return pos->parent; 778 return pos->parent;
779} 779}
780 780
781static void __kernfs_remove(struct sysfs_addrm_cxt *acxt, 781static void __kernfs_remove(struct kernfs_addrm_cxt *acxt,
782 struct kernfs_node *kn) 782 struct kernfs_node *kn)
783{ 783{
784 struct kernfs_node *pos, *next; 784 struct kernfs_node *pos, *next;
@@ -805,7 +805,7 @@ static void __kernfs_remove(struct sysfs_addrm_cxt *acxt,
805 */ 805 */
806void kernfs_remove(struct kernfs_node *kn) 806void kernfs_remove(struct kernfs_node *kn)
807{ 807{
808 struct sysfs_addrm_cxt acxt; 808 struct kernfs_addrm_cxt acxt;
809 809
810 sysfs_addrm_start(&acxt); 810 sysfs_addrm_start(&acxt);
811 __kernfs_remove(&acxt, kn); 811 __kernfs_remove(&acxt, kn);
@@ -824,7 +824,7 @@ void kernfs_remove(struct kernfs_node *kn)
824int kernfs_remove_by_name_ns(struct kernfs_node *parent, const char *name, 824int kernfs_remove_by_name_ns(struct kernfs_node *parent, const char *name,
825 const void *ns) 825 const void *ns)
826{ 826{
827 struct sysfs_addrm_cxt acxt; 827 struct kernfs_addrm_cxt acxt;
828 struct kernfs_node *kn; 828 struct kernfs_node *kn;
829 829
830 if (!parent) { 830 if (!parent) {
@@ -971,7 +971,7 @@ static int sysfs_readdir(struct file *file, struct dir_context *ctx)
971 mutex_lock(&sysfs_mutex); 971 mutex_lock(&sysfs_mutex);
972 972
973 if (kernfs_ns_enabled(parent)) 973 if (kernfs_ns_enabled(parent))
974 ns = sysfs_info(dentry->d_sb)->ns; 974 ns = kernfs_info(dentry->d_sb)->ns;
975 975
976 for (pos = sysfs_dir_pos(ns, parent, ctx->pos, pos); 976 for (pos = sysfs_dir_pos(ns, parent, ctx->pos, pos);
977 pos; 977 pos;
diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index 5277021196a7..2714a394cd81 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -18,27 +18,27 @@
18#include "kernfs-internal.h" 18#include "kernfs-internal.h"
19 19
20/* 20/*
21 * There's one sysfs_open_file for each open file and one sysfs_open_dirent 21 * There's one kernfs_open_file for each open file and one kernfs_open_node
22 * for each kernfs_node with one or more open files. 22 * for each kernfs_node with one or more open files.
23 * 23 *
24 * kernfs_node->attr.open points to sysfs_open_dirent. attr.open is 24 * kernfs_node->attr.open points to kernfs_open_node. attr.open is
25 * protected by sysfs_open_dirent_lock. 25 * protected by kernfs_open_node_lock.
26 * 26 *
27 * filp->private_data points to seq_file whose ->private points to 27 * filp->private_data points to seq_file whose ->private points to
28 * sysfs_open_file. sysfs_open_files are chained at 28 * kernfs_open_file. kernfs_open_files are chained at
29 * sysfs_open_dirent->files, which is protected by sysfs_open_file_mutex. 29 * kernfs_open_node->files, which is protected by kernfs_open_file_mutex.
30 */ 30 */
31static DEFINE_SPINLOCK(sysfs_open_dirent_lock); 31static DEFINE_SPINLOCK(kernfs_open_node_lock);
32static DEFINE_MUTEX(sysfs_open_file_mutex); 32static DEFINE_MUTEX(kernfs_open_file_mutex);
33 33
34struct sysfs_open_dirent { 34struct kernfs_open_node {
35 atomic_t refcnt; 35 atomic_t refcnt;
36 atomic_t event; 36 atomic_t event;
37 wait_queue_head_t poll; 37 wait_queue_head_t poll;
38 struct list_head files; /* goes through sysfs_open_file.list */ 38 struct list_head files; /* goes through kernfs_open_file.list */
39}; 39};
40 40
41static struct sysfs_open_file *sysfs_of(struct file *file) 41static struct kernfs_open_file *kernfs_of(struct file *file)
42{ 42{
43 return ((struct seq_file *)file->private_data)->private; 43 return ((struct seq_file *)file->private_data)->private;
44} 44}
@@ -56,7 +56,7 @@ static const struct kernfs_ops *kernfs_ops(struct kernfs_node *kn)
56 56
57static void *kernfs_seq_start(struct seq_file *sf, loff_t *ppos) 57static void *kernfs_seq_start(struct seq_file *sf, loff_t *ppos)
58{ 58{
59 struct sysfs_open_file *of = sf->private; 59 struct kernfs_open_file *of = sf->private;
60 const struct kernfs_ops *ops; 60 const struct kernfs_ops *ops;
61 61
62 /* 62 /*
@@ -81,7 +81,7 @@ static void *kernfs_seq_start(struct seq_file *sf, loff_t *ppos)
81 81
82static void *kernfs_seq_next(struct seq_file *sf, void *v, loff_t *ppos) 82static void *kernfs_seq_next(struct seq_file *sf, void *v, loff_t *ppos)
83{ 83{
84 struct sysfs_open_file *of = sf->private; 84 struct kernfs_open_file *of = sf->private;
85 const struct kernfs_ops *ops = kernfs_ops(of->kn); 85 const struct kernfs_ops *ops = kernfs_ops(of->kn);
86 86
87 if (ops->seq_next) { 87 if (ops->seq_next) {
@@ -98,7 +98,7 @@ static void *kernfs_seq_next(struct seq_file *sf, void *v, loff_t *ppos)
98 98
99static void kernfs_seq_stop(struct seq_file *sf, void *v) 99static void kernfs_seq_stop(struct seq_file *sf, void *v)
100{ 100{
101 struct sysfs_open_file *of = sf->private; 101 struct kernfs_open_file *of = sf->private;
102 const struct kernfs_ops *ops = kernfs_ops(of->kn); 102 const struct kernfs_ops *ops = kernfs_ops(of->kn);
103 103
104 if (ops->seq_stop) 104 if (ops->seq_stop)
@@ -110,7 +110,7 @@ static void kernfs_seq_stop(struct seq_file *sf, void *v)
110 110
111static int kernfs_seq_show(struct seq_file *sf, void *v) 111static int kernfs_seq_show(struct seq_file *sf, void *v)
112{ 112{
113 struct sysfs_open_file *of = sf->private; 113 struct kernfs_open_file *of = sf->private;
114 114
115 of->event = atomic_read(&of->kn->attr.open->event); 115 of->event = atomic_read(&of->kn->attr.open->event);
116 116
@@ -130,7 +130,7 @@ static const struct seq_operations kernfs_seq_ops = {
130 * it difficult to use seq_file. Implement simplistic custom buffering for 130 * it difficult to use seq_file. Implement simplistic custom buffering for
131 * bin files. 131 * bin files.
132 */ 132 */
133static ssize_t kernfs_file_direct_read(struct sysfs_open_file *of, 133static ssize_t kernfs_file_direct_read(struct kernfs_open_file *of,
134 char __user *user_buf, size_t count, 134 char __user *user_buf, size_t count,
135 loff_t *ppos) 135 loff_t *ppos)
136{ 136{
@@ -187,7 +187,7 @@ static ssize_t kernfs_file_direct_read(struct sysfs_open_file *of,
187static ssize_t kernfs_file_read(struct file *file, char __user *user_buf, 187static ssize_t kernfs_file_read(struct file *file, char __user *user_buf,
188 size_t count, loff_t *ppos) 188 size_t count, loff_t *ppos)
189{ 189{
190 struct sysfs_open_file *of = sysfs_of(file); 190 struct kernfs_open_file *of = kernfs_of(file);
191 191
192 if (of->kn->flags & SYSFS_FLAG_HAS_SEQ_SHOW) 192 if (of->kn->flags & SYSFS_FLAG_HAS_SEQ_SHOW)
193 return seq_read(file, user_buf, count, ppos); 193 return seq_read(file, user_buf, count, ppos);
@@ -214,7 +214,7 @@ static ssize_t kernfs_file_read(struct file *file, char __user *user_buf,
214static ssize_t kernfs_file_write(struct file *file, const char __user *user_buf, 214static ssize_t kernfs_file_write(struct file *file, const char __user *user_buf,
215 size_t count, loff_t *ppos) 215 size_t count, loff_t *ppos)
216{ 216{
217 struct sysfs_open_file *of = sysfs_of(file); 217 struct kernfs_open_file *of = kernfs_of(file);
218 ssize_t len = min_t(size_t, count, PAGE_SIZE); 218 ssize_t len = min_t(size_t, count, PAGE_SIZE);
219 const struct kernfs_ops *ops; 219 const struct kernfs_ops *ops;
220 char *buf; 220 char *buf;
@@ -259,7 +259,7 @@ out_free:
259static void kernfs_vma_open(struct vm_area_struct *vma) 259static void kernfs_vma_open(struct vm_area_struct *vma)
260{ 260{
261 struct file *file = vma->vm_file; 261 struct file *file = vma->vm_file;
262 struct sysfs_open_file *of = sysfs_of(file); 262 struct kernfs_open_file *of = kernfs_of(file);
263 263
264 if (!of->vm_ops) 264 if (!of->vm_ops)
265 return; 265 return;
@@ -276,7 +276,7 @@ static void kernfs_vma_open(struct vm_area_struct *vma)
276static int kernfs_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) 276static int kernfs_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
277{ 277{
278 struct file *file = vma->vm_file; 278 struct file *file = vma->vm_file;
279 struct sysfs_open_file *of = sysfs_of(file); 279 struct kernfs_open_file *of = kernfs_of(file);
280 int ret; 280 int ret;
281 281
282 if (!of->vm_ops) 282 if (!of->vm_ops)
@@ -297,7 +297,7 @@ static int kernfs_vma_page_mkwrite(struct vm_area_struct *vma,
297 struct vm_fault *vmf) 297 struct vm_fault *vmf)
298{ 298{
299 struct file *file = vma->vm_file; 299 struct file *file = vma->vm_file;
300 struct sysfs_open_file *of = sysfs_of(file); 300 struct kernfs_open_file *of = kernfs_of(file);
301 int ret; 301 int ret;
302 302
303 if (!of->vm_ops) 303 if (!of->vm_ops)
@@ -320,7 +320,7 @@ static int kernfs_vma_access(struct vm_area_struct *vma, unsigned long addr,
320 void *buf, int len, int write) 320 void *buf, int len, int write)
321{ 321{
322 struct file *file = vma->vm_file; 322 struct file *file = vma->vm_file;
323 struct sysfs_open_file *of = sysfs_of(file); 323 struct kernfs_open_file *of = kernfs_of(file);
324 int ret; 324 int ret;
325 325
326 if (!of->vm_ops) 326 if (!of->vm_ops)
@@ -342,7 +342,7 @@ static int kernfs_vma_set_policy(struct vm_area_struct *vma,
342 struct mempolicy *new) 342 struct mempolicy *new)
343{ 343{
344 struct file *file = vma->vm_file; 344 struct file *file = vma->vm_file;
345 struct sysfs_open_file *of = sysfs_of(file); 345 struct kernfs_open_file *of = kernfs_of(file);
346 int ret; 346 int ret;
347 347
348 if (!of->vm_ops) 348 if (!of->vm_ops)
@@ -363,7 +363,7 @@ static struct mempolicy *kernfs_vma_get_policy(struct vm_area_struct *vma,
363 unsigned long addr) 363 unsigned long addr)
364{ 364{
365 struct file *file = vma->vm_file; 365 struct file *file = vma->vm_file;
366 struct sysfs_open_file *of = sysfs_of(file); 366 struct kernfs_open_file *of = kernfs_of(file);
367 struct mempolicy *pol; 367 struct mempolicy *pol;
368 368
369 if (!of->vm_ops) 369 if (!of->vm_ops)
@@ -385,7 +385,7 @@ static int kernfs_vma_migrate(struct vm_area_struct *vma,
385 unsigned long flags) 385 unsigned long flags)
386{ 386{
387 struct file *file = vma->vm_file; 387 struct file *file = vma->vm_file;
388 struct sysfs_open_file *of = sysfs_of(file); 388 struct kernfs_open_file *of = kernfs_of(file);
389 int ret; 389 int ret;
390 390
391 if (!of->vm_ops) 391 if (!of->vm_ops)
@@ -417,7 +417,7 @@ static const struct vm_operations_struct kernfs_vm_ops = {
417 417
418static int kernfs_file_mmap(struct file *file, struct vm_area_struct *vma) 418static int kernfs_file_mmap(struct file *file, struct vm_area_struct *vma)
419{ 419{
420 struct sysfs_open_file *of = sysfs_of(file); 420 struct kernfs_open_file *of = kernfs_of(file);
421 const struct kernfs_ops *ops; 421 const struct kernfs_ops *ops;
422 int rc; 422 int rc;
423 423
@@ -473,9 +473,9 @@ out_unlock:
473} 473}
474 474
475/** 475/**
476 * sysfs_get_open_dirent - get or create sysfs_open_dirent 476 * sysfs_get_open_dirent - get or create kernfs_open_node
477 * @kn: target kernfs_node 477 * @kn: target kernfs_node
478 * @of: sysfs_open_file for this instance of open 478 * @of: kernfs_open_file for this instance of open
479 * 479 *
480 * If @kn->attr.open exists, increment its reference count; otherwise, 480 * If @kn->attr.open exists, increment its reference count; otherwise,
481 * create one. @of is chained to the files list. 481 * create one. @of is chained to the files list.
@@ -487,49 +487,49 @@ out_unlock:
487 * 0 on success, -errno on failure. 487 * 0 on success, -errno on failure.
488 */ 488 */
489static int sysfs_get_open_dirent(struct kernfs_node *kn, 489static int sysfs_get_open_dirent(struct kernfs_node *kn,
490 struct sysfs_open_file *of) 490 struct kernfs_open_file *of)
491{ 491{
492 struct sysfs_open_dirent *od, *new_od = NULL; 492 struct kernfs_open_node *on, *new_on = NULL;
493 493
494 retry: 494 retry:
495 mutex_lock(&sysfs_open_file_mutex); 495 mutex_lock(&kernfs_open_file_mutex);
496 spin_lock_irq(&sysfs_open_dirent_lock); 496 spin_lock_irq(&kernfs_open_node_lock);
497 497
498 if (!kn->attr.open && new_od) { 498 if (!kn->attr.open && new_on) {
499 kn->attr.open = new_od; 499 kn->attr.open = new_on;
500 new_od = NULL; 500 new_on = NULL;
501 } 501 }
502 502
503 od = kn->attr.open; 503 on = kn->attr.open;
504 if (od) { 504 if (on) {
505 atomic_inc(&od->refcnt); 505 atomic_inc(&on->refcnt);
506 list_add_tail(&of->list, &od->files); 506 list_add_tail(&of->list, &on->files);
507 } 507 }
508 508
509 spin_unlock_irq(&sysfs_open_dirent_lock); 509 spin_unlock_irq(&kernfs_open_node_lock);
510 mutex_unlock(&sysfs_open_file_mutex); 510 mutex_unlock(&kernfs_open_file_mutex);
511 511
512 if (od) { 512 if (on) {
513 kfree(new_od); 513 kfree(new_on);
514 return 0; 514 return 0;
515 } 515 }
516 516
517 /* not there, initialize a new one and retry */ 517 /* not there, initialize a new one and retry */
518 new_od = kmalloc(sizeof(*new_od), GFP_KERNEL); 518 new_on = kmalloc(sizeof(*new_on), GFP_KERNEL);
519 if (!new_od) 519 if (!new_on)
520 return -ENOMEM; 520 return -ENOMEM;
521 521
522 atomic_set(&new_od->refcnt, 0); 522 atomic_set(&new_on->refcnt, 0);
523 atomic_set(&new_od->event, 1); 523 atomic_set(&new_on->event, 1);
524 init_waitqueue_head(&new_od->poll); 524 init_waitqueue_head(&new_on->poll);
525 INIT_LIST_HEAD(&new_od->files); 525 INIT_LIST_HEAD(&new_on->files);
526 goto retry; 526 goto retry;
527} 527}
528 528
529/** 529/**
530 * sysfs_put_open_dirent - put sysfs_open_dirent 530 * sysfs_put_open_dirent - put kernfs_open_node
531 * @kn: target kernfs_nodet 531 * @kn: target kernfs_nodet
532 * @of: associated sysfs_open_file 532 * @of: associated kernfs_open_file
533 * 533 *
534 * Put @kn->attr.open and unlink @of from the files list. If 534 * Put @kn->attr.open and unlink @of from the files list. If
535 * reference count reaches zero, disassociate and free it. 535 * reference count reaches zero, disassociate and free it.
@@ -538,33 +538,33 @@ static int sysfs_get_open_dirent(struct kernfs_node *kn,
538 * None. 538 * None.
539 */ 539 */
540static void sysfs_put_open_dirent(struct kernfs_node *kn, 540static void sysfs_put_open_dirent(struct kernfs_node *kn,
541 struct sysfs_open_file *of) 541 struct kernfs_open_file *of)
542{ 542{
543 struct sysfs_open_dirent *od = kn->attr.open; 543 struct kernfs_open_node *on = kn->attr.open;
544 unsigned long flags; 544 unsigned long flags;
545 545
546 mutex_lock(&sysfs_open_file_mutex); 546 mutex_lock(&kernfs_open_file_mutex);
547 spin_lock_irqsave(&sysfs_open_dirent_lock, flags); 547 spin_lock_irqsave(&kernfs_open_node_lock, flags);
548 548
549 if (of) 549 if (of)
550 list_del(&of->list); 550 list_del(&of->list);
551 551
552 if (atomic_dec_and_test(&od->refcnt)) 552 if (atomic_dec_and_test(&on->refcnt))
553 kn->attr.open = NULL; 553 kn->attr.open = NULL;
554 else 554 else
555 od = NULL; 555 on = NULL;
556 556
557 spin_unlock_irqrestore(&sysfs_open_dirent_lock, flags); 557 spin_unlock_irqrestore(&kernfs_open_node_lock, flags);
558 mutex_unlock(&sysfs_open_file_mutex); 558 mutex_unlock(&kernfs_open_file_mutex);
559 559
560 kfree(od); 560 kfree(on);
561} 561}
562 562
563static int kernfs_file_open(struct inode *inode, struct file *file) 563static int kernfs_file_open(struct inode *inode, struct file *file)
564{ 564{
565 struct kernfs_node *kn = file->f_path.dentry->d_fsdata; 565 struct kernfs_node *kn = file->f_path.dentry->d_fsdata;
566 const struct kernfs_ops *ops; 566 const struct kernfs_ops *ops;
567 struct sysfs_open_file *of; 567 struct kernfs_open_file *of;
568 bool has_read, has_write, has_mmap; 568 bool has_read, has_write, has_mmap;
569 int error = -EACCES; 569 int error = -EACCES;
570 570
@@ -586,9 +586,9 @@ static int kernfs_file_open(struct inode *inode, struct file *file)
586 (!(inode->i_mode & S_IRUGO) || !has_read)) 586 (!(inode->i_mode & S_IRUGO) || !has_read))
587 goto err_out; 587 goto err_out;
588 588
589 /* allocate a sysfs_open_file for the file */ 589 /* allocate a kernfs_open_file for the file */
590 error = -ENOMEM; 590 error = -ENOMEM;
591 of = kzalloc(sizeof(struct sysfs_open_file), GFP_KERNEL); 591 of = kzalloc(sizeof(struct kernfs_open_file), GFP_KERNEL);
592 if (!of) 592 if (!of)
593 goto err_out; 593 goto err_out;
594 594
@@ -654,7 +654,7 @@ err_out:
654static int kernfs_file_release(struct inode *inode, struct file *filp) 654static int kernfs_file_release(struct inode *inode, struct file *filp)
655{ 655{
656 struct kernfs_node *kn = filp->f_path.dentry->d_fsdata; 656 struct kernfs_node *kn = filp->f_path.dentry->d_fsdata;
657 struct sysfs_open_file *of = sysfs_of(filp); 657 struct kernfs_open_file *of = kernfs_of(filp);
658 658
659 sysfs_put_open_dirent(kn, of); 659 sysfs_put_open_dirent(kn, of);
660 seq_release(inode, filp); 660 seq_release(inode, filp);
@@ -665,26 +665,26 @@ static int kernfs_file_release(struct inode *inode, struct file *filp)
665 665
666void sysfs_unmap_bin_file(struct kernfs_node *kn) 666void sysfs_unmap_bin_file(struct kernfs_node *kn)
667{ 667{
668 struct sysfs_open_dirent *od; 668 struct kernfs_open_node *on;
669 struct sysfs_open_file *of; 669 struct kernfs_open_file *of;
670 670
671 if (!(kn->flags & SYSFS_FLAG_HAS_MMAP)) 671 if (!(kn->flags & SYSFS_FLAG_HAS_MMAP))
672 return; 672 return;
673 673
674 spin_lock_irq(&sysfs_open_dirent_lock); 674 spin_lock_irq(&kernfs_open_node_lock);
675 od = kn->attr.open; 675 on = kn->attr.open;
676 if (od) 676 if (on)
677 atomic_inc(&od->refcnt); 677 atomic_inc(&on->refcnt);
678 spin_unlock_irq(&sysfs_open_dirent_lock); 678 spin_unlock_irq(&kernfs_open_node_lock);
679 if (!od) 679 if (!on)
680 return; 680 return;
681 681
682 mutex_lock(&sysfs_open_file_mutex); 682 mutex_lock(&kernfs_open_file_mutex);
683 list_for_each_entry(of, &od->files, list) { 683 list_for_each_entry(of, &on->files, list) {
684 struct inode *inode = file_inode(of->file); 684 struct inode *inode = file_inode(of->file);
685 unmap_mapping_range(inode->i_mapping, 0, 0, 1); 685 unmap_mapping_range(inode->i_mapping, 0, 0, 1);
686 } 686 }
687 mutex_unlock(&sysfs_open_file_mutex); 687 mutex_unlock(&kernfs_open_file_mutex);
688 688
689 sysfs_put_open_dirent(kn, NULL); 689 sysfs_put_open_dirent(kn, NULL);
690} 690}
@@ -704,19 +704,19 @@ void sysfs_unmap_bin_file(struct kernfs_node *kn)
704 */ 704 */
705static unsigned int kernfs_file_poll(struct file *filp, poll_table *wait) 705static unsigned int kernfs_file_poll(struct file *filp, poll_table *wait)
706{ 706{
707 struct sysfs_open_file *of = sysfs_of(filp); 707 struct kernfs_open_file *of = kernfs_of(filp);
708 struct kernfs_node *kn = filp->f_path.dentry->d_fsdata; 708 struct kernfs_node *kn = filp->f_path.dentry->d_fsdata;
709 struct sysfs_open_dirent *od = kn->attr.open; 709 struct kernfs_open_node *on = kn->attr.open;
710 710
711 /* need parent for the kobj, grab both */ 711 /* need parent for the kobj, grab both */
712 if (!sysfs_get_active(kn)) 712 if (!sysfs_get_active(kn))
713 goto trigger; 713 goto trigger;
714 714
715 poll_wait(filp, &od->poll, wait); 715 poll_wait(filp, &on->poll, wait);
716 716
717 sysfs_put_active(kn); 717 sysfs_put_active(kn);
718 718
719 if (of->event != atomic_read(&od->event)) 719 if (of->event != atomic_read(&on->event))
720 goto trigger; 720 goto trigger;
721 721
722 return DEFAULT_POLLMASK; 722 return DEFAULT_POLLMASK;
@@ -733,20 +733,20 @@ static unsigned int kernfs_file_poll(struct file *filp, poll_table *wait)
733 */ 733 */
734void kernfs_notify(struct kernfs_node *kn) 734void kernfs_notify(struct kernfs_node *kn)
735{ 735{
736 struct sysfs_open_dirent *od; 736 struct kernfs_open_node *on;
737 unsigned long flags; 737 unsigned long flags;
738 738
739 spin_lock_irqsave(&sysfs_open_dirent_lock, flags); 739 spin_lock_irqsave(&kernfs_open_node_lock, flags);
740 740
741 if (!WARN_ON(sysfs_type(kn) != SYSFS_KOBJ_ATTR)) { 741 if (!WARN_ON(sysfs_type(kn) != SYSFS_KOBJ_ATTR)) {
742 od = kn->attr.open; 742 on = kn->attr.open;
743 if (od) { 743 if (on) {
744 atomic_inc(&od->event); 744 atomic_inc(&on->event);
745 wake_up_interruptible(&od->poll); 745 wake_up_interruptible(&on->poll);
746 } 746 }
747 } 747 }
748 748
749 spin_unlock_irqrestore(&sysfs_open_dirent_lock, flags); 749 spin_unlock_irqrestore(&kernfs_open_node_lock, flags);
750} 750}
751EXPORT_SYMBOL_GPL(kernfs_notify); 751EXPORT_SYMBOL_GPL(kernfs_notify);
752 752
@@ -780,7 +780,7 @@ struct kernfs_node *kernfs_create_file_ns_key(struct kernfs_node *parent,
780 void *priv, const void *ns, 780 void *priv, const void *ns,
781 struct lock_class_key *key) 781 struct lock_class_key *key)
782{ 782{
783 struct sysfs_addrm_cxt acxt; 783 struct kernfs_addrm_cxt acxt;
784 struct kernfs_node *kn; 784 struct kernfs_node *kn;
785 int rc; 785 int rc;
786 786
diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c
index f6c0aae3dd5c..a0e0038fd570 100644
--- a/fs/kernfs/inode.c
+++ b/fs/kernfs/inode.c
@@ -46,14 +46,14 @@ void __init sysfs_inode_init(void)
46 panic("failed to init sysfs_backing_dev_info"); 46 panic("failed to init sysfs_backing_dev_info");
47} 47}
48 48
49static struct sysfs_inode_attrs *sysfs_inode_attrs(struct kernfs_node *kn) 49static struct kernfs_iattrs *kernfs_iattrs(struct kernfs_node *kn)
50{ 50{
51 struct iattr *iattrs; 51 struct iattr *iattrs;
52 52
53 if (kn->iattr) 53 if (kn->iattr)
54 return kn->iattr; 54 return kn->iattr;
55 55
56 kn->iattr = kzalloc(sizeof(struct sysfs_inode_attrs), GFP_KERNEL); 56 kn->iattr = kzalloc(sizeof(struct kernfs_iattrs), GFP_KERNEL);
57 if (!kn->iattr) 57 if (!kn->iattr)
58 return NULL; 58 return NULL;
59 iattrs = &kn->iattr->ia_iattr; 59 iattrs = &kn->iattr->ia_iattr;
@@ -71,11 +71,11 @@ static struct sysfs_inode_attrs *sysfs_inode_attrs(struct kernfs_node *kn)
71 71
72static int __kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr) 72static int __kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr)
73{ 73{
74 struct sysfs_inode_attrs *attrs; 74 struct kernfs_iattrs *attrs;
75 struct iattr *iattrs; 75 struct iattr *iattrs;
76 unsigned int ia_valid = iattr->ia_valid; 76 unsigned int ia_valid = iattr->ia_valid;
77 77
78 attrs = sysfs_inode_attrs(kn); 78 attrs = kernfs_iattrs(kn);
79 if (!attrs) 79 if (!attrs)
80 return -ENOMEM; 80 return -ENOMEM;
81 81
@@ -144,11 +144,11 @@ out:
144static int sysfs_sd_setsecdata(struct kernfs_node *kn, void **secdata, 144static int sysfs_sd_setsecdata(struct kernfs_node *kn, void **secdata,
145 u32 *secdata_len) 145 u32 *secdata_len)
146{ 146{
147 struct sysfs_inode_attrs *attrs; 147 struct kernfs_iattrs *attrs;
148 void *old_secdata; 148 void *old_secdata;
149 size_t old_secdata_len; 149 size_t old_secdata_len;
150 150
151 attrs = sysfs_inode_attrs(kn); 151 attrs = kernfs_iattrs(kn);
152 if (!attrs) 152 if (!attrs)
153 return -ENOMEM; 153 return -ENOMEM;
154 154
@@ -167,12 +167,12 @@ int sysfs_setxattr(struct dentry *dentry, const char *name, const void *value,
167 size_t size, int flags) 167 size_t size, int flags)
168{ 168{
169 struct kernfs_node *kn = dentry->d_fsdata; 169 struct kernfs_node *kn = dentry->d_fsdata;
170 struct sysfs_inode_attrs *attrs; 170 struct kernfs_iattrs *attrs;
171 void *secdata; 171 void *secdata;
172 int error; 172 int error;
173 u32 secdata_len = 0; 173 u32 secdata_len = 0;
174 174
175 attrs = sysfs_inode_attrs(kn); 175 attrs = kernfs_iattrs(kn);
176 if (!attrs) 176 if (!attrs)
177 return -ENOMEM; 177 return -ENOMEM;
178 178
@@ -205,9 +205,9 @@ int sysfs_setxattr(struct dentry *dentry, const char *name, const void *value,
205int sysfs_removexattr(struct dentry *dentry, const char *name) 205int sysfs_removexattr(struct dentry *dentry, const char *name)
206{ 206{
207 struct kernfs_node *kn = dentry->d_fsdata; 207 struct kernfs_node *kn = dentry->d_fsdata;
208 struct sysfs_inode_attrs *attrs; 208 struct kernfs_iattrs *attrs;
209 209
210 attrs = sysfs_inode_attrs(kn); 210 attrs = kernfs_iattrs(kn);
211 if (!attrs) 211 if (!attrs)
212 return -ENOMEM; 212 return -ENOMEM;
213 213
@@ -218,9 +218,9 @@ ssize_t sysfs_getxattr(struct dentry *dentry, const char *name, void *buf,
218 size_t size) 218 size_t size)
219{ 219{
220 struct kernfs_node *kn = dentry->d_fsdata; 220 struct kernfs_node *kn = dentry->d_fsdata;
221 struct sysfs_inode_attrs *attrs; 221 struct kernfs_iattrs *attrs;
222 222
223 attrs = sysfs_inode_attrs(kn); 223 attrs = kernfs_iattrs(kn);
224 if (!attrs) 224 if (!attrs)
225 return -ENOMEM; 225 return -ENOMEM;
226 226
@@ -230,9 +230,9 @@ ssize_t sysfs_getxattr(struct dentry *dentry, const char *name, void *buf,
230ssize_t sysfs_listxattr(struct dentry *dentry, char *buf, size_t size) 230ssize_t sysfs_listxattr(struct dentry *dentry, char *buf, size_t size)
231{ 231{
232 struct kernfs_node *kn = dentry->d_fsdata; 232 struct kernfs_node *kn = dentry->d_fsdata;
233 struct sysfs_inode_attrs *attrs; 233 struct kernfs_iattrs *attrs;
234 234
235 attrs = sysfs_inode_attrs(kn); 235 attrs = kernfs_iattrs(kn);
236 if (!attrs) 236 if (!attrs)
237 return -ENOMEM; 237 return -ENOMEM;
238 238
@@ -256,7 +256,7 @@ static inline void set_inode_attr(struct inode *inode, struct iattr *iattr)
256 256
257static void sysfs_refresh_inode(struct kernfs_node *kn, struct inode *inode) 257static void sysfs_refresh_inode(struct kernfs_node *kn, struct inode *inode)
258{ 258{
259 struct sysfs_inode_attrs *attrs = kn->iattr; 259 struct kernfs_iattrs *attrs = kn->iattr;
260 260
261 inode->i_mode = kn->mode; 261 inode->i_mode = kn->mode;
262 if (attrs) { 262 if (attrs) {
diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h
index 2dbb1cb95e7f..573f66988643 100644
--- a/fs/kernfs/kernfs-internal.h
+++ b/fs/kernfs/kernfs-internal.h
@@ -18,7 +18,7 @@
18 18
19#include <linux/kernfs.h> 19#include <linux/kernfs.h>
20 20
21struct sysfs_inode_attrs { 21struct kernfs_iattrs {
22 struct iattr ia_iattr; 22 struct iattr ia_iattr;
23 void *ia_secdata; 23 void *ia_secdata;
24 u32 ia_secdata_len; 24 u32 ia_secdata_len;
@@ -47,14 +47,14 @@ static inline struct kernfs_root *kernfs_root(struct kernfs_node *kn)
47/* 47/*
48 * Context structure to be used while adding/removing nodes. 48 * Context structure to be used while adding/removing nodes.
49 */ 49 */
50struct sysfs_addrm_cxt { 50struct kernfs_addrm_cxt {
51 struct kernfs_node *removed; 51 struct kernfs_node *removed;
52}; 52};
53 53
54/* 54/*
55 * mount.c 55 * mount.c
56 */ 56 */
57struct sysfs_super_info { 57struct kernfs_super_info {
58 /* 58 /*
59 * The root associated with this super_block. Each super_block is 59 * The root associated with this super_block. Each super_block is
60 * identified by the root and ns it's associated with. 60 * identified by the root and ns it's associated with.
@@ -63,13 +63,13 @@ struct sysfs_super_info {
63 63
64 /* 64 /*
65 * Each sb is associated with one namespace tag, currently the 65 * Each sb is associated with one namespace tag, currently the
66 * network namespace of the task which mounted this sysfs instance. 66 * network namespace of the task which mounted this kernfs
67 * If multiple tags become necessary, make the following an array 67 * instance. If multiple tags become necessary, make the following
68 * and compare kernfs_node tag against every entry. 68 * an array and compare kernfs_node tag against every entry.
69 */ 69 */
70 const void *ns; 70 const void *ns;
71}; 71};
72#define sysfs_info(SB) ((struct sysfs_super_info *)(SB->s_fs_info)) 72#define kernfs_info(SB) ((struct kernfs_super_info *)(SB->s_fs_info))
73 73
74extern struct kmem_cache *sysfs_dir_cachep; 74extern struct kmem_cache *sysfs_dir_cachep;
75 75
@@ -100,10 +100,10 @@ extern const struct inode_operations sysfs_dir_inode_operations;
100 100
101struct kernfs_node *sysfs_get_active(struct kernfs_node *kn); 101struct kernfs_node *sysfs_get_active(struct kernfs_node *kn);
102void sysfs_put_active(struct kernfs_node *kn); 102void sysfs_put_active(struct kernfs_node *kn);
103void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt); 103void sysfs_addrm_start(struct kernfs_addrm_cxt *acxt);
104int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct kernfs_node *kn, 104int sysfs_add_one(struct kernfs_addrm_cxt *acxt, struct kernfs_node *kn,
105 struct kernfs_node *parent); 105 struct kernfs_node *parent);
106void sysfs_addrm_finish(struct sysfs_addrm_cxt *acxt); 106void sysfs_addrm_finish(struct kernfs_addrm_cxt *acxt);
107struct kernfs_node *sysfs_new_dirent(struct kernfs_root *root, 107struct kernfs_node *sysfs_new_dirent(struct kernfs_root *root,
108 const char *name, umode_t mode, int type); 108 const char *name, umode_t mode, int type);
109 109
diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c
index 9dbbf37b1af9..e0796dcb6065 100644
--- a/fs/kernfs/mount.c
+++ b/fs/kernfs/mount.c
@@ -27,7 +27,7 @@ static const struct super_operations sysfs_ops = {
27 27
28static int sysfs_fill_super(struct super_block *sb) 28static int sysfs_fill_super(struct super_block *sb)
29{ 29{
30 struct sysfs_super_info *info = sysfs_info(sb); 30 struct kernfs_super_info *info = kernfs_info(sb);
31 struct inode *inode; 31 struct inode *inode;
32 struct dentry *root; 32 struct dentry *root;
33 33
@@ -61,8 +61,8 @@ static int sysfs_fill_super(struct super_block *sb)
61 61
62static int sysfs_test_super(struct super_block *sb, void *data) 62static int sysfs_test_super(struct super_block *sb, void *data)
63{ 63{
64 struct sysfs_super_info *sb_info = sysfs_info(sb); 64 struct kernfs_super_info *sb_info = kernfs_info(sb);
65 struct sysfs_super_info *info = data; 65 struct kernfs_super_info *info = data;
66 66
67 return sb_info->root == info->root && sb_info->ns == info->ns; 67 return sb_info->root == info->root && sb_info->ns == info->ns;
68} 68}
@@ -84,7 +84,7 @@ static int sysfs_set_super(struct super_block *sb, void *data)
84 */ 84 */
85const void *kernfs_super_ns(struct super_block *sb) 85const void *kernfs_super_ns(struct super_block *sb)
86{ 86{
87 struct sysfs_super_info *info = sysfs_info(sb); 87 struct kernfs_super_info *info = kernfs_info(sb);
88 88
89 return info->ns; 89 return info->ns;
90} 90}
@@ -107,7 +107,7 @@ struct dentry *kernfs_mount_ns(struct file_system_type *fs_type, int flags,
107 struct kernfs_root *root, const void *ns) 107 struct kernfs_root *root, const void *ns)
108{ 108{
109 struct super_block *sb; 109 struct super_block *sb;
110 struct sysfs_super_info *info; 110 struct kernfs_super_info *info;
111 int error; 111 int error;
112 112
113 info = kzalloc(sizeof(*info), GFP_KERNEL); 113 info = kzalloc(sizeof(*info), GFP_KERNEL);
@@ -144,12 +144,12 @@ struct dentry *kernfs_mount_ns(struct file_system_type *fs_type, int flags,
144 */ 144 */
145void kernfs_kill_sb(struct super_block *sb) 145void kernfs_kill_sb(struct super_block *sb)
146{ 146{
147 struct sysfs_super_info *info = sysfs_info(sb); 147 struct kernfs_super_info *info = kernfs_info(sb);
148 struct kernfs_node *root_kn = sb->s_root->d_fsdata; 148 struct kernfs_node *root_kn = sb->s_root->d_fsdata;
149 149
150 /* 150 /*
151 * Remove the superblock from fs_supers/s_instances 151 * Remove the superblock from fs_supers/s_instances
152 * so we can't find it, before freeing sysfs_super_info. 152 * so we can't find it, before freeing kernfs_super_info.
153 */ 153 */
154 kill_anon_super(sb); 154 kill_anon_super(sb);
155 kfree(info); 155 kfree(info);
diff --git a/fs/kernfs/symlink.c b/fs/kernfs/symlink.c
index 5ac1a57c3807..f36e3f1b2477 100644
--- a/fs/kernfs/symlink.c
+++ b/fs/kernfs/symlink.c
@@ -27,7 +27,7 @@ struct kernfs_node *kernfs_create_link(struct kernfs_node *parent,
27 struct kernfs_node *target) 27 struct kernfs_node *target)
28{ 28{
29 struct kernfs_node *kn; 29 struct kernfs_node *kn;
30 struct sysfs_addrm_cxt acxt; 30 struct kernfs_addrm_cxt acxt;
31 int error; 31 int error;
32 32
33 kn = sysfs_new_dirent(kernfs_root(parent), name, S_IFLNK|S_IRWXUGO, 33 kn = sysfs_new_dirent(kernfs_root(parent), name, S_IFLNK|S_IRWXUGO,