bcachefs: Fix short buffered writes

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In the buffered write path, we have to check for short writes that write
to the full page, where the page wasn't UpToDate; when this happens, the
page is partly garbage, so we have to zero it out and revert that part
of the write.

This check was wrong - we reverted total from copied, but didn't revert
the iov_iter, probably also leading to corrupted writes.

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

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Kent Overstreet 2020-07-09 13:54:58 -04:00 • committed by Kent Overstreet

parent 0ba95acc44

commit 912bdf17a8

1 changed files with 11 additions and 10 deletions

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fs/bcachefs/fs-io.c

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