iomap: remove pos+len BUG_ON() to after folio lookup

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The bug checks at the top of iomap_write_begin() assume the pos/len
reflect exactly the next range to process. This may no longer be the
case once the get folio path is able to process a folio batch from
the filesystem. On top of that, len is already trimmed to within the
iomap/srcmap by iomap_length(), so these checks aren't terribly
useful. Remove the unnecessary BUG_ON() checks.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>

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Brian Foster 2025-10-03 09:46:36 -04:00 • committed by Christian Brauner

parent f8d98072fe

commit 49590716be

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1 changed files with 1 additions and 4 deletions

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fs/iomap/buffered-io.c

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