iomap: account for unaligned end offsets when truncating read range

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[ Upstream commit 9d875e0eef ]

The end position to start truncating from may be at an offset into a
block, which under the current logic would result in overtruncation.

Adjust the calculation to account for unaligned end offsets.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Link: https://patch.msgid.link/20251111193658.3495942-3-joannelkoong@gmail.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Joanne Koong 2025-11-11 11:36:51 -08:00 • committed by Greg Kroah-Hartman

parent 142194fb21

commit bfa4924cbc

1 changed files with 20 additions and 2 deletions

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fs/iomap/buffered-io.c

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