gfs2: gfs2_walk_metadata fix

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It turns out that the current version of gfs2_metadata_walker suffers
from multiple problems that can cause gfs2_hole_size to report an
incorrect size.  This will confuse fiemap as well as lseek with the
SEEK_DATA flag.

Fix that by changing gfs2_hole_walker to compute the metapath to the
first data block after the hole (if any), and compute the hole size
based on that.

Fixes xfstest generic/490.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Bob Peterson <rpeterso@redhat.com>
Cc: stable@vger.kernel.org # v4.18+

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Andreas Gruenbacher 2019-08-05 12:22:03 +01:00

parent e21a712a96

commit a27a0c9b6a

1 changed files with 101 additions and 63 deletions

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fs/gfs2/bmap.c

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