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vfs: move fsnotify junk to struct mount

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2011-11-25 02:35:16 -05:00
parent 52ba1621de
commit c63181e6b6
6 changed files with 47 additions and 42 deletions
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6
fs/notify/fanotify/fanotify_user.c
View File

@@ -16,6 +16,8 @@
#include <asm/ioctls.h>
#include "../../mount.h"
#define FANOTIFY_DEFAULT_MAX_EVENTS 16384
#define FANOTIFY_DEFAULT_MAX_MARKS 8192
#define FANOTIFY_DEFAULT_MAX_LISTENERS 128
@@ -546,7 +548,7 @@ static int fanotify_remove_vfsmount_mark(struct fsnotify_group *group,
removed = fanotify_mark_remove_from_mask(fsn_mark, mask, flags);
fsnotify_put_mark(fsn_mark);
if (removed & mnt->mnt_fsnotify_mask)
if (removed & real_mount(mnt)->mnt_fsnotify_mask)
fsnotify_recalc_vfsmount_mask(mnt);
return 0;
@@ -623,7 +625,7 @@ static int fanotify_add_vfsmount_mark(struct fsnotify_group *group,
}
added = fanotify_mark_add_to_mask(fsn_mark, mask, flags);
if (added & ~mnt->mnt_fsnotify_mask)
if (added & ~real_mount(mnt)->mnt_fsnotify_mask)
fsnotify_recalc_vfsmount_mask(mnt);
err:
fsnotify_put_mark(fsn_mark);

9
fs/notify/fsnotify.c
View File

@@ -26,6 +26,7 @@
#include <linux/fsnotify_backend.h>
#include "fsnotify.h"
#include "../mount.h"
/*
* Clear all of the marks on an inode when it is being evicted from core
@@ -205,13 +206,13 @@ int fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is,
struct fsnotify_mark *inode_mark = NULL, *vfsmount_mark = NULL;
struct fsnotify_group *inode_group, *vfsmount_group;
struct fsnotify_event *event = NULL;
struct vfsmount *mnt;
struct mount *mnt;
int idx, ret = 0;
/* global tests shouldn't care about events on child only the specific event */
__u32 test_mask = (mask & ~FS_EVENT_ON_CHILD);
if (data_is == FSNOTIFY_EVENT_PATH)
mnt = ((struct path *)data)->mnt;
mnt = real_mount(((struct path *)data)->mnt);
else
mnt = NULL;
@@ -262,11 +263,11 @@ int fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is,
/* we didn't use the vfsmount_mark */
vfsmount_group = NULL;
} else if (vfsmount_group > inode_group) {
ret = send_to_group(to_tell, mnt, NULL, vfsmount_mark, mask, data,
ret = send_to_group(to_tell, &mnt->mnt, NULL, vfsmount_mark, mask, data,
data_is, cookie, file_name, &event);
inode_group = NULL;
} else {
ret = send_to_group(to_tell, mnt, inode_mark, vfsmount_mark,
ret = send_to_group(to_tell, &mnt->mnt, inode_mark, vfsmount_mark,
mask, data, data_is, cookie, file_name,
&event);
}

19
fs/notify/vfsmount_mark.c
View File

@@ -28,15 +28,17 @@
#include <linux/fsnotify_backend.h>
#include "fsnotify.h"
#include "../mount.h"
void fsnotify_clear_marks_by_mount(struct vfsmount *mnt)
{
struct fsnotify_mark *mark, *lmark;
struct hlist_node *pos, *n;
struct mount *m = real_mount(mnt);
LIST_HEAD(free_list);
spin_lock(&mnt->mnt_root->d_lock);
hlist_for_each_entry_safe(mark, pos, n, &mnt->mnt_fsnotify_marks, m.m_list) {
hlist_for_each_entry_safe(mark, pos, n, &m->mnt_fsnotify_marks, m.m_list) {
list_add(&mark->m.free_m_list, &free_list);
hlist_del_init_rcu(&mark->m.m_list);
fsnotify_get_mark(mark);
@@ -59,15 +61,16 @@ void fsnotify_clear_vfsmount_marks_by_group(struct fsnotify_group *group)
*/
static void fsnotify_recalc_vfsmount_mask_locked(struct vfsmount *mnt)
{
struct mount *m = real_mount(mnt);
struct fsnotify_mark *mark;
struct hlist_node *pos;
__u32 new_mask = 0;
assert_spin_locked(&mnt->mnt_root->d_lock);
hlist_for_each_entry(mark, pos, &mnt->mnt_fsnotify_marks, m.m_list)
hlist_for_each_entry(mark, pos, &m->mnt_fsnotify_marks, m.m_list)
new_mask |= mark->mask;
mnt->mnt_fsnotify_mask = new_mask;
m->mnt_fsnotify_mask = new_mask;
}
/*
@@ -101,12 +104,13 @@ void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark)
static struct fsnotify_mark *fsnotify_find_vfsmount_mark_locked(struct fsnotify_group *group,
struct vfsmount *mnt)
{
struct mount *m = real_mount(mnt);
struct fsnotify_mark *mark;
struct hlist_node *pos;
assert_spin_locked(&mnt->mnt_root->d_lock);
hlist_for_each_entry(mark, pos, &mnt->mnt_fsnotify_marks, m.m_list) {
hlist_for_each_entry(mark, pos, &m->mnt_fsnotify_marks, m.m_list) {
if (mark->group == group) {
fsnotify_get_mark(mark);
return mark;
@@ -140,6 +144,7 @@ int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
struct fsnotify_group *group, struct vfsmount *mnt,
int allow_dups)
{
struct mount *m = real_mount(mnt);
struct fsnotify_mark *lmark;
struct hlist_node *node, *last = NULL;
int ret = 0;
@@ -154,13 +159,13 @@ int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
mark->m.mnt = mnt;
/* is mark the first mark? */
if (hlist_empty(&mnt->mnt_fsnotify_marks)) {
hlist_add_head_rcu(&mark->m.m_list, &mnt->mnt_fsnotify_marks);
if (hlist_empty(&m->mnt_fsnotify_marks)) {
hlist_add_head_rcu(&mark->m.m_list, &m->mnt_fsnotify_marks);
goto out;
}
/* should mark be in the middle of the current list? */
hlist_for_each_entry(lmark, node, &mnt->mnt_fsnotify_marks, m.m_list) {
hlist_for_each_entry(lmark, node, &m->mnt_fsnotify_marks, m.m_list) {
last = node;
if ((lmark->group == group) && !allow_dups) {