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Date:   Mon, 27 Apr 2020 03:50:32 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     Ritesh Harjani <riteshh@linux.ibm.com>
Cc:     linux-ext4@vger.kernel.org
Subject: ext4 fiemap and the inode lock
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Hi Ritesh,

before you converted ext4 to use iomap for fiemap, the indirect block
case used generic_block_fiemap and thus took i_rwsem around the 
actual fiemap operation.  Do you remember if you did an audit if it
was ok to drop it, or did that just slip in?