[PATCH v4 14/54] convert mqueue
From: Al Viro <viro@zeniv.linux.org.uk>
Date: 2025-11-18 05:16:10
Also in:
bpf, linux-efi, linux-fsdevel, linux-mm, linux-usb, ocfs2-devel, selinux
Subsystem:
the rest · Maintainer:
Linus Torvalds
All modifications via normal VFS codepaths; just take care of making persistent in in mqueue_create_attr() and discardable in mqueue_unlink() and it doesn't need kill_litter_super() at all. mqueue_unlink() side is best handled by having it call simple_unlink() rather than duplicating its guts... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> --- ipc/mqueue.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 093551fe66a7..5737130137bf 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c@@ -599,8 +599,7 @@ static int mqueue_create_attr(struct dentry *dentry, umode_t mode, void *arg) dir->i_size += DIRENT_SIZE; simple_inode_init_ts(dir); - d_instantiate(dentry, inode); - dget(dentry); + d_make_persistent(dentry, inode); return 0; out_unlock: spin_unlock(&mq_lock);
@@ -617,13 +616,8 @@ static int mqueue_create(struct mnt_idmap *idmap, struct inode *dir, static int mqueue_unlink(struct inode *dir, struct dentry *dentry) { - struct inode *inode = d_inode(dentry); - - simple_inode_init_ts(dir); dir->i_size -= DIRENT_SIZE; - drop_nlink(inode); - dput(dentry); - return 0; + return simple_unlink(dir, dentry); } /*
@@ -1638,7 +1632,7 @@ static const struct fs_context_operations mqueue_fs_context_ops = { static struct file_system_type mqueue_fs_type = { .name = "mqueue", .init_fs_context = mqueue_init_fs_context, - .kill_sb = kill_litter_super, + .kill_sb = kill_anon_super, .fs_flags = FS_USERNS_MOUNT, };
--
2.47.3