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authorJan Kara <jack@suse.cz>2016-12-21 20:06:12 +0300
committerJan Kara <jack@suse.cz>2017-04-10 18:37:36 +0300
commit054c636e5c8054884ede889be82ce059879945e6 (patch)
tree0559d887ce9f1bd9ba0e594b0fc876d597327bc1 /fs/notify
parent7b1293234084ddb6469c4e9a5ef818f399b5786b (diff)
downloadlinux-054c636e5c8054884ede889be82ce059879945e6.tar.xz
fsnotify: Move ->free_mark callback to fsnotify_ops
Pointer to ->free_mark callback unnecessarily occupies one long in each fsnotify_mark although they are the same for all marks from one notification group. Move the callback pointer to fsnotify_ops. Reviewed-by: Miklos Szeredi <mszeredi@redhat.com> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify')
-rw-r--r--fs/notify/dnotify/dnotify.c3
-rw-r--r--fs/notify/fanotify/fanotify.c6
-rw-r--r--fs/notify/fanotify/fanotify.h1
-rw-r--r--fs/notify/fanotify/fanotify_user.c9
-rw-r--r--fs/notify/inotify/inotify.h1
-rw-r--r--fs/notify/inotify/inotify_fsnotify.c11
-rw-r--r--fs/notify/inotify/inotify_user.c14
-rw-r--r--fs/notify/mark.c13
8 files changed, 32 insertions, 26 deletions
diff --git a/fs/notify/dnotify/dnotify.c b/fs/notify/dnotify/dnotify.c
index f9d500fd7b9a..2430a0415995 100644
--- a/fs/notify/dnotify/dnotify.c
+++ b/fs/notify/dnotify/dnotify.c
@@ -135,6 +135,7 @@ static void dnotify_free_mark(struct fsnotify_mark *fsn_mark)
static struct fsnotify_ops dnotify_fsnotify_ops = {
.handle_event = dnotify_handle_event,
+ .free_mark = dnotify_free_mark,
};
/*
@@ -305,7 +306,7 @@ int fcntl_dirnotify(int fd, struct file *filp, unsigned long arg)
/* set up the new_fsn_mark and new_dn_mark */
new_fsn_mark = &new_dn_mark->fsn_mark;
- fsnotify_init_mark(new_fsn_mark, dnotify_group, dnotify_free_mark);
+ fsnotify_init_mark(new_fsn_mark, dnotify_group);
new_fsn_mark->mask = mask;
new_dn_mark->dn = NULL;
diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c
index 461c21ebebeb..2fa99aeaa095 100644
--- a/fs/notify/fanotify/fanotify.c
+++ b/fs/notify/fanotify/fanotify.c
@@ -262,8 +262,14 @@ static void fanotify_free_event(struct fsnotify_event *fsn_event)
kmem_cache_free(fanotify_event_cachep, event);
}
+static void fanotify_free_mark(struct fsnotify_mark *fsn_mark)
+{
+ kmem_cache_free(fanotify_mark_cache, fsn_mark);
+}
+
const struct fsnotify_ops fanotify_fsnotify_ops = {
.handle_event = fanotify_handle_event,
.free_group_priv = fanotify_free_group_priv,
.free_event = fanotify_free_event,
+ .free_mark = fanotify_free_mark,
};
diff --git a/fs/notify/fanotify/fanotify.h b/fs/notify/fanotify/fanotify.h
index 4500a74f8d38..4eb6f5efa282 100644
--- a/fs/notify/fanotify/fanotify.h
+++ b/fs/notify/fanotify/fanotify.h
@@ -2,6 +2,7 @@
#include <linux/path.h>
#include <linux/slab.h>
+extern struct kmem_cache *fanotify_mark_cache;
extern struct kmem_cache *fanotify_event_cachep;
extern struct kmem_cache *fanotify_perm_event_cachep;
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index d5775f054be7..bf306d4f72f7 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -41,7 +41,7 @@
extern const struct fsnotify_ops fanotify_fsnotify_ops;
-static struct kmem_cache *fanotify_mark_cache __read_mostly;
+struct kmem_cache *fanotify_mark_cache __read_mostly;
struct kmem_cache *fanotify_event_cachep __read_mostly;
struct kmem_cache *fanotify_perm_event_cachep __read_mostly;
@@ -445,11 +445,6 @@ static const struct file_operations fanotify_fops = {
.llseek = noop_llseek,
};
-static void fanotify_free_mark(struct fsnotify_mark *fsn_mark)
-{
- kmem_cache_free(fanotify_mark_cache, fsn_mark);
-}
-
static int fanotify_find_path(int dfd, const char __user *filename,
struct path *path, unsigned int flags)
{
@@ -628,7 +623,7 @@ static struct fsnotify_mark *fanotify_add_new_mark(struct fsnotify_group *group,
if (!mark)
return ERR_PTR(-ENOMEM);
- fsnotify_init_mark(mark, group, fanotify_free_mark);
+ fsnotify_init_mark(mark, group);
ret = fsnotify_add_mark_locked(mark, inode, mnt, 0);
if (ret) {
fsnotify_put_mark(mark);
diff --git a/fs/notify/inotify/inotify.h b/fs/notify/inotify/inotify.h
index 7a966f456269..9ff67b61da8a 100644
--- a/fs/notify/inotify/inotify.h
+++ b/fs/notify/inotify/inotify.h
@@ -31,6 +31,7 @@ extern int inotify_handle_event(struct fsnotify_group *group,
struct fsnotify_iter_info *iter_info);
extern const struct fsnotify_ops inotify_fsnotify_ops;
+extern struct kmem_cache *inotify_inode_mark_cachep;
#ifdef CONFIG_INOTIFY_USER
static inline void dec_inotify_instances(struct ucounts *ucounts)
diff --git a/fs/notify/inotify/inotify_fsnotify.c b/fs/notify/inotify/inotify_fsnotify.c
index ccd6a4055e0c..8b73332735ba 100644
--- a/fs/notify/inotify/inotify_fsnotify.c
+++ b/fs/notify/inotify/inotify_fsnotify.c
@@ -176,9 +176,20 @@ static void inotify_free_event(struct fsnotify_event *fsn_event)
kfree(INOTIFY_E(fsn_event));
}
+/* ding dong the mark is dead */
+static void inotify_free_mark(struct fsnotify_mark *fsn_mark)
+{
+ struct inotify_inode_mark *i_mark;
+
+ i_mark = container_of(fsn_mark, struct inotify_inode_mark, fsn_mark);
+
+ kmem_cache_free(inotify_inode_mark_cachep, i_mark);
+}
+
const struct fsnotify_ops inotify_fsnotify_ops = {
.handle_event = inotify_handle_event,
.free_group_priv = inotify_free_group_priv,
.free_event = inotify_free_event,
.freeing_mark = inotify_freeing_mark,
+ .free_mark = inotify_free_mark,
};
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index 07febafd826e..7cc7d3fb1862 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -47,7 +47,7 @@
/* configurable via /proc/sys/fs/inotify/ */
static int inotify_max_queued_events __read_mostly;
-static struct kmem_cache *inotify_inode_mark_cachep __read_mostly;
+struct kmem_cache *inotify_inode_mark_cachep __read_mostly;
#ifdef CONFIG_SYSCTL
@@ -483,16 +483,6 @@ void inotify_ignored_and_remove_idr(struct fsnotify_mark *fsn_mark,
dec_inotify_watches(group->inotify_data.ucounts);
}
-/* ding dong the mark is dead */
-static void inotify_free_mark(struct fsnotify_mark *fsn_mark)
-{
- struct inotify_inode_mark *i_mark;
-
- i_mark = container_of(fsn_mark, struct inotify_inode_mark, fsn_mark);
-
- kmem_cache_free(inotify_inode_mark_cachep, i_mark);
-}
-
static int inotify_update_existing_watch(struct fsnotify_group *group,
struct inode *inode,
u32 arg)
@@ -558,7 +548,7 @@ static int inotify_new_watch(struct fsnotify_group *group,
if (unlikely(!tmp_i_mark))
return -ENOMEM;
- fsnotify_init_mark(&tmp_i_mark->fsn_mark, group, inotify_free_mark);
+ fsnotify_init_mark(&tmp_i_mark->fsn_mark, group);
tmp_i_mark->fsn_mark.mask = mask;
tmp_i_mark->wd = -1;
diff --git a/fs/notify/mark.c b/fs/notify/mark.c
index 2f743e2035e4..55955ded338d 100644
--- a/fs/notify/mark.c
+++ b/fs/notify/mark.c
@@ -195,9 +195,12 @@ static struct inode *fsnotify_detach_connector_from_object(
static void fsnotify_final_mark_destroy(struct fsnotify_mark *mark)
{
- if (mark->group)
- fsnotify_put_group(mark->group);
- mark->free_mark(mark);
+ struct fsnotify_group *group = mark->group;
+
+ if (WARN_ON_ONCE(!group))
+ return;
+ group->ops->free_mark(mark);
+ fsnotify_put_group(group);
}
void fsnotify_put_mark(struct fsnotify_mark *mark)
@@ -732,13 +735,11 @@ void fsnotify_destroy_marks(struct fsnotify_mark_connector __rcu **connp)
* Nothing fancy, just initialize lists and locks and counters.
*/
void fsnotify_init_mark(struct fsnotify_mark *mark,
- struct fsnotify_group *group,
- void (*free_mark)(struct fsnotify_mark *mark))
+ struct fsnotify_group *group)
{
memset(mark, 0, sizeof(*mark));
spin_lock_init(&mark->lock);
atomic_set(&mark->refcnt, 1);
- mark->free_mark = free_mark;
fsnotify_get_group(group);
mark->group = group;
}