linux-ext4 - [PATCH 01/12] mm: fix a comment in sys

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Message-Id: <20200114161225.309792-2-hch@lst.de>
Date:   Tue, 14 Jan 2020 17:12:14 +0100
From:   Christoph Hellwig <hch@....de>
To:     linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Waiman Long <longman@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-ext4@...r.kernel.org, cluster-devel@...hat.com
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH 01/12] mm: fix a comment in sys_swapon

claim_swapfile now always takes i_rwsem.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 mm/swapfile.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/swapfile.c b/mm/swapfile.c
index bb3261d45b6a..fe6e4c1add0b 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -3157,7 +3157,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
 	mapping = swap_file->f_mapping;
 	inode = mapping->host;
 
-	/* If S_ISREG(inode->i_mode) will do inode_lock(inode); */
+	/* will take i_rwsem; */
 	error = claim_swapfile(p, inode);
 	if (unlikely(error))
 		goto bad_swap;
-- 
2.24.1