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authorEric Paris <eparis@redhat.com>2009-05-21 17:01:29 -0400
committerEric Paris <eparis@redhat.com>2009-06-11 14:57:53 -0400
commitc28f7e56e9d95fb531dc3be8df2e7f52bee76d21 (patch)
treeefce13ed8c4f5b312ef0b77950489d52ef5a039a /include/linux/fsnotify.h
parent3be25f49b9d6a97eae9bcb96d3292072b7658bd8 (diff)
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fsnotify: parent event notification
inotify and dnotify both use a similar parent notification mechanism. We add a generic parent notification mechanism to fsnotify for both of these to use. This new machanism also adds the dentry flag optimization which exists for inotify to dnotify. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'include/linux/fsnotify.h')
-rw-r--r--include/linux/fsnotify.h34
1 files changed, 25 insertions, 9 deletions
diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h
index 3856eb6e5973..6a662ed0bc8a 100644
--- a/include/linux/fsnotify.h
+++ b/include/linux/fsnotify.h
@@ -23,15 +23,31 @@
static inline void fsnotify_d_instantiate(struct dentry *entry,
struct inode *inode)
{
+ __fsnotify_d_instantiate(entry, inode);
+
inotify_d_instantiate(entry, inode);
}
+/* Notify this dentry's parent about a child's events. */
+static inline void fsnotify_parent(struct dentry *dentry, __u32 mask)
+{
+ __fsnotify_parent(dentry, mask);
+
+ inotify_dentry_parent_queue_event(dentry, mask, 0, dentry->d_name.name);
+}
+
/*
* fsnotify_d_move - entry has been moved
* Called with dcache_lock and entry->d_lock held.
*/
static inline void fsnotify_d_move(struct dentry *entry)
{
+ /*
+ * On move we need to update entry->d_flags to indicate if the new parent
+ * cares about events from this entry.
+ */
+ __fsnotify_update_dcache_flags(entry);
+
inotify_d_move(entry);
}
@@ -117,7 +133,8 @@ static inline void fsnotify_nameremove(struct dentry *dentry, int isdir)
if (isdir)
mask |= FS_IN_ISDIR;
dnotify_parent(dentry, DN_DELETE);
- inotify_dentry_parent_queue_event(dentry, mask, 0, dentry->d_name.name);
+
+ fsnotify_parent(dentry, mask);
}
/*
@@ -188,9 +205,9 @@ static inline void fsnotify_access(struct dentry *dentry)
mask |= FS_IN_ISDIR;
dnotify_parent(dentry, DN_ACCESS);
- inotify_dentry_parent_queue_event(dentry, mask, 0, dentry->d_name.name);
inotify_inode_queue_event(inode, mask, 0, NULL, NULL);
+ fsnotify_parent(dentry, mask);
fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE);
}
@@ -206,9 +223,9 @@ static inline void fsnotify_modify(struct dentry *dentry)
mask |= FS_IN_ISDIR;
dnotify_parent(dentry, DN_MODIFY);
- inotify_dentry_parent_queue_event(dentry, mask, 0, dentry->d_name.name);
inotify_inode_queue_event(inode, mask, 0, NULL, NULL);
+ fsnotify_parent(dentry, mask);
fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE);
}
@@ -223,9 +240,9 @@ static inline void fsnotify_open(struct dentry *dentry)
if (S_ISDIR(inode->i_mode))
mask |= FS_IN_ISDIR;
- inotify_dentry_parent_queue_event(dentry, mask, 0, dentry->d_name.name);
inotify_inode_queue_event(inode, mask, 0, NULL, NULL);
+ fsnotify_parent(dentry, mask);
fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE);
}
@@ -236,16 +253,15 @@ static inline void fsnotify_close(struct file *file)
{
struct dentry *dentry = file->f_path.dentry;
struct inode *inode = dentry->d_inode;
- const char *name = dentry->d_name.name;
fmode_t mode = file->f_mode;
__u32 mask = (mode & FMODE_WRITE) ? FS_CLOSE_WRITE : FS_CLOSE_NOWRITE;
if (S_ISDIR(inode->i_mode))
mask |= FS_IN_ISDIR;
- inotify_dentry_parent_queue_event(dentry, mask, 0, name);
inotify_inode_queue_event(inode, mask, 0, NULL, NULL);
+ fsnotify_parent(dentry, mask);
fsnotify(inode, mask, file, FSNOTIFY_EVENT_FILE);
}
@@ -260,9 +276,9 @@ static inline void fsnotify_xattr(struct dentry *dentry)
if (S_ISDIR(inode->i_mode))
mask |= FS_IN_ISDIR;
- inotify_dentry_parent_queue_event(dentry, mask, 0, dentry->d_name.name);
inotify_inode_queue_event(inode, mask, 0, NULL, NULL);
+ fsnotify_parent(dentry, mask);
fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE);
}
@@ -311,8 +327,8 @@ static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid)
if (S_ISDIR(inode->i_mode))
in_mask |= FS_IN_ISDIR;
inotify_inode_queue_event(inode, in_mask, 0, NULL, NULL);
- inotify_dentry_parent_queue_event(dentry, in_mask, 0,
- dentry->d_name.name);
+
+ fsnotify_parent(dentry, in_mask);
fsnotify(inode, in_mask, inode, FSNOTIFY_EVENT_INODE);
}
}