dax: Remove zeroing from dax_io()

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All the filesystems are now zeroing blocks themselves for DAX IO to avoid
races between dax_io() and dax_fault(). Remove the zeroing code from
dax_io() and add warning to catch the case when somebody unexpectedly
returns new or unwritten buffer.

Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>

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Jan Kara 2016-05-11 11:58:51 +02:00 • committed by Vishal Verma

parent 2b10945c53

commit 069c77bc9e

1 changed files with 10 additions and 18 deletions

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fs/dax.c

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