fuse: use iomap for read_folio

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Read folio data into the page cache using iomap. This gives us granular
uptodate tracking for large folios, which optimizes how much data needs
to be read in. If some portions of the folio are already uptodate (eg
through a prior write), we only need to read in the non-uptodate
portions.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>

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Joanne Koong 2025-09-25 17:26:07 -07:00 • committed by Christian Brauner

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commit 03e9618e82

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fs/fuse/file.c

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