dax: pass detailed error code from dax_iomap_fault()

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Ext4 needs to pass through error from its iomap handler to the page
fault handler so that it can properly detect ENOSPC and force
transaction commit and retry the fault (and block allocation). Add
argument to dax_iomap_fault() for passing such error.

Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

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Jan Kara 2018-01-07 16:38:43 -05:00 • committed by Theodore Ts'o

parent bbe45d2460

commit c0b2462597

5 changed files with 10 additions and 7 deletions

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include/linux/dax.h

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