Revision 8b2180b3bf0338625cab07da6543acb436df9c40 authored by Dave Chinner on 16 August 2016, 22:31:33 UTC, committed by Dave Chinner on 16 August 2016, 22:31:33 UTC
When we do DAX IO, we try to invalidate the entire page cache held
on the file. This is incorrect as it will trash the entire mapping
tree that now tracks dirty state in exceptional entries in the radix
tree slots.

What we are trying to do is remove cached pages (e.g from reads
into holes) that sit in the radix tree over the range we are about
to write to. Hence we should just limit the invalidation to the
range we are about to overwrite.

Reported-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>

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coccinelle
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ksymoops
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gcc-ld -rwxr-xr-x 676 bytes
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gcc-version.sh -rwxr-xr-x 822 bytes
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kernel-doc -rwxr-xr-x 87.4 KB
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ver_linux -rwxr-xr-x 3.9 KB
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