ext4: do not polute the extents cache while shifting extents

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commit 03e916fa8b upstream.

Inside ext4_ext_shift_extents() function ext4_find_extent() is called
without EXT4_EX_NOCACHE flag, which should prevent cache population.

This leads to oudated offsets in the extents tree and wrong blocks
afterwards.

Patch fixes the problem providing EXT4_EX_NOCACHE flag for each
ext4_find_extents() call inside ext4_ext_shift_extents function.

Fixes: 331573febb
Signed-off-by: Roman Pen <roman.penyaev@profitbricks.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: Namjae Jeon <namjae.jeon@samsung.com>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Roman Pen 2017-01-08 21:00:35 -05:00 • committed by Greg Kroah-Hartman

parent 72ae476d04

commit e0b53d6729

1 changed files with 6 additions and 3 deletions

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fs/ext4/extents.c

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