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configfs: call fsnotify_rmdir() hook

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This will allow generating fsnotify delete events on unregister
of group/subsystem after the fsnotify_nameremove() hook is removed
from d_delete().

The rest of the d_delete() calls from this filesystem are either
called recursively from within debugfs_unregister_{group,subsystem},
called from a vfs function that already has delete hooks or are
called from shutdown/cleanup code.

Cc: Joel Becker <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Signed-off-by: Amir Goldstein <[email protected]>
Signed-off-by: Jan Kara <[email protected]>
This commit is contained in:
Amir Goldstein 2019-05-26 17:34:09 +03:00 • committed by Jan Kara
commit 6146e78c03
1 changed files with 3 additions and 0 deletions
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3
fs/configfs/dir.c
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@ -27,6 +27,7 @@
#undef DEBUG
#include <linux/fs.h>
#include <linux/fsnotify.h>
#include <linux/mount.h>
#include <linux/module.h>
#include <linux/slab.h>
@ -1804,6 +1805,7 @@ void configfs_unregister_group(struct config_group *group)
configfs_detach_group(&group->cg_item);
d_inode(dentry)->i_flags |= S_DEAD;
dont_mount(dentry);
fsnotify_rmdir(d_inode(parent), dentry);
d_delete(dentry);
inode_unlock(d_inode(parent));
@ -1932,6 +1934,7 @@ void configfs_unregister_subsystem(struct configfs_subsystem *subsys)
configfs_detach_group(&group->cg_item);
d_inode(dentry)->i_flags |= S_DEAD;
dont_mount(dentry);
fsnotify_rmdir(d_inode(root), dentry);
inode_unlock(d_inode(dentry));
d_delete(dentry);