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Commit affda484 authored by Al Viro's avatar Al Viro
Browse files

trim fsnotify hooks a bit 



fsnotify_d_move()/__fsnotify_d_instantiate()/__fsnotify_update_dcache_flags()
are identical to each other, regardless of the config.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 77d5a6b7

fs/dcache.c

+4 −4
Original line number Original line Diff line number Diff line
@@ -1769,7 +1769,7 @@ static void __d_instantiate(struct dentry *dentry, struct inode *inode) 
	raw_write_seqcount_begin(&dentry->d_seq);

	raw_write_seqcount_begin(&dentry->d_seq);

	__d_set_inode_and_type(dentry, inode, add_flags);

	__d_set_inode_and_type(dentry, inode, add_flags);

	raw_write_seqcount_end(&dentry->d_seq);

	raw_write_seqcount_end(&dentry->d_seq);

	__fsnotify_d_instantiate(dentry);

	fsnotify_update_flags(dentry);

	spin_unlock(&dentry->d_lock);

	spin_unlock(&dentry->d_lock);

}

}
@@ -2563,7 +2563,7 @@ static inline void __d_add(struct dentry *dentry, struct inode *inode) 
		raw_write_seqcount_begin(&dentry->d_seq);

		raw_write_seqcount_begin(&dentry->d_seq);

		__d_set_inode_and_type(dentry, inode, add_flags);

		__d_set_inode_and_type(dentry, inode, add_flags);

		raw_write_seqcount_end(&dentry->d_seq);

		raw_write_seqcount_end(&dentry->d_seq);

		__fsnotify_d_instantiate(dentry);

		fsnotify_update_flags(dentry);

	}

	}

	_d_rehash(dentry);

	_d_rehash(dentry);

	if (dir)

	if (dir)
@@ -2853,8 +2853,8 @@ static void __d_move(struct dentry *dentry, struct dentry *target, 
		list_move(&target->d_child, &target->d_parent->d_subdirs);

		list_move(&target->d_child, &target->d_parent->d_subdirs);

		list_move(&dentry->d_child, &dentry->d_parent->d_subdirs);

		list_move(&dentry->d_child, &dentry->d_parent->d_subdirs);

		if (exchange)

		if (exchange)

			fsnotify_d_move(target);

			fsnotify_update_flags(target);

		fsnotify_d_move(dentry);

		fsnotify_update_flags(dentry);

	}

	}





	write_seqcount_end(&target->d_seq);

	write_seqcount_end(&target->d_seq);

include/linux/fsnotify.h

+0 −12
Original line number Original line Diff line number Diff line
@@ -51,18 +51,6 @@ static inline int fsnotify_perm(struct file *file, int mask) 
	return fsnotify(inode, fsnotify_mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);

	return fsnotify(inode, fsnotify_mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);

}

}





/*

 * fsnotify_d_move - dentry has been moved

 */

static inline void fsnotify_d_move(struct dentry *dentry)

{

	/*

	 * On move we need to update dentry->d_flags to indicate if the new parent

	 * cares about events from this dentry.

	 */

	__fsnotify_update_dcache_flags(dentry);

}



/*

/*

 * fsnotify_link_count - inode's link count changed

 * fsnotify_link_count - inode's link count changed

 */

 */

include/linux/fsnotify_backend.h

+3 −17
Original line number Original line Diff line number Diff line
@@ -267,10 +267,8 @@ static inline int fsnotify_inode_watches_children(struct inode *inode) 
 * Update the dentry with a flag indicating the interest of its parent to receive

 * Update the dentry with a flag indicating the interest of its parent to receive

 * filesystem events when those events happens to this dentry->d_inode.

 * filesystem events when those events happens to this dentry->d_inode.

 */

 */

static inline void __fsnotify_update_dcache_flags(struct dentry *dentry)

static inline void fsnotify_update_flags(struct dentry *dentry)

{

{

	struct dentry *parent;



	assert_spin_locked(&dentry->d_lock);

	assert_spin_locked(&dentry->d_lock);





	/*

	/*
@@ -280,21 +278,12 @@ static inline void __fsnotify_update_dcache_flags(struct dentry *dentry) 
	 * find our entry, so it will spin until we complete here, and update

	 * find our entry, so it will spin until we complete here, and update

	 * us with the new state.

	 * us with the new state.

	 */

	 */

	parent = dentry->d_parent;

	if (fsnotify_inode_watches_children(dentry->d_parent->d_inode))

	if (fsnotify_inode_watches_children(parent->d_inode))

		dentry->d_flags |= DCACHE_FSNOTIFY_PARENT_WATCHED;

		dentry->d_flags |= DCACHE_FSNOTIFY_PARENT_WATCHED;

	else

	else

		dentry->d_flags &= ~DCACHE_FSNOTIFY_PARENT_WATCHED;

		dentry->d_flags &= ~DCACHE_FSNOTIFY_PARENT_WATCHED;

}

}





/*

 * fsnotify_d_instantiate - instantiate a dentry for inode

 */

static inline void __fsnotify_d_instantiate(struct dentry *dentry)

{

	__fsnotify_update_dcache_flags(dentry);

}



/* called from fsnotify listeners, such as fanotify or dnotify */

/* called from fsnotify listeners, such as fanotify or dnotify */





/* create a new group */

/* create a new group */
@@ -386,10 +375,7 @@ static inline void __fsnotify_inode_delete(struct inode *inode) 
static inline void __fsnotify_vfsmount_delete(struct vfsmount *mnt)

static inline void __fsnotify_vfsmount_delete(struct vfsmount *mnt)

{}

{}





static inline void __fsnotify_update_dcache_flags(struct dentry *dentry)

static inline void fsnotify_update_flags(struct dentry *dentry)

{}



static inline void __fsnotify_d_instantiate(struct dentry *dentry)

{}

{}





static inline u32 fsnotify_get_cookie(void)

static inline u32 fsnotify_get_cookie(void)