bcachefs: Fix swallowing of data in buffered write path

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In __bch2_buffered_write, if we fail to write to an entire !uptodate
folio, we have to back out the write, bail out and retry.

But we were missing an iov_iter_revert() call, so the data written to
the folio was lost and the rest of the write shifted to the wrong
offset.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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Kent Overstreet 2023-08-14 22:29:41 -04:00

parent 8c9b0f7bdc

commit 62898dd12b

1 changed files with 1 additions and 0 deletions

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fs/bcachefs/fs-io-buffered.c

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