linux-kernel - [PATCH] proc: annotate close

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Message-ID: <20200227201538.GA30462@avx2>
Date:   Thu, 27 Feb 2020 23:15:38 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     akpm@...ux-foundation.org
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        jbi.octave@...il.com
Subject: [PATCH] proc: annotate close_pdeo() for sparse

From: Jules Irenge <jbi.octave@...il.com>

Fix sparse locking imbalance warning:

	warning: context imbalance in close_pdeo() - unexpected unlock

Signed-off-by: Jules Irenge <jbi.octave@...il.com>
Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---

 fs/proc/inode.c | 1 +
 1 file changed, 1 insertion(+)

--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -139,6 +139,7 @@ static void unuse_pde(struct proc_dir_entry *pde)
 
 /* pde is locked on entry, unlocked on exit */
 static void close_pdeo(struct proc_dir_entry *pde, struct pde_opener *pdeo)
+	__releases(&pde->pde_unload_lock)
 {
 	/*
 	 * close() (proc_reg_release()) can't delete an entry and proceed: