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new helper: ihold()

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Clones an existing reference to inode; caller must already hold one.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2010-10-23 11:11:40 -04:00
parent 646ec4615c
commit 7de9c6ee3e
40 changed files with 57 additions and 49 deletions
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2
ipc/mqueue.c
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@ -769,7 +769,7 @@ SYSCALL_DEFINE1(mq_unlink, const char __user *, u_name)
inode = dentry->d_inode;
if (inode)
atomic_inc(&inode->i_count);
ihold(inode);
err = mnt_want_write(ipc_ns->mq_mnt);
if (err)
goto out_err;