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| author | Dan Williams <dan.j.williams@intel.com> | 2017-05-10 19:38:13 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-05-10 21:46:55 -0700 |
| commit | e84b83b9ee2187817cf895471675f1ccdf64cd53 (patch) | |
| tree | 5cfe0788dff1536475ce68c9c2241327e545d8b3 /fs/block_dev.c | |
| parent | b177fe85dd27de1ee4c29f59c4e82b3ea3b78784 (diff) | |
| download | linux-stable-e84b83b9ee2187817cf895471675f1ccdf64cd53.tar.gz linux-stable-e84b83b9ee2187817cf895471675f1ccdf64cd53.tar.bz2 linux-stable-e84b83b9ee2187817cf895471675f1ccdf64cd53.zip | |
filesystem-dax: fix broken __dax_zero_page_range() conversion
The conversion of __dax_zero_page_range() to 'struct dax_operations'
caused it to frequently fail. The mistake was treating the @size
parameter as a dax mapping length rather than just a length of the
clear_pmem() operation. The dax mapping length is assumed to be hard
coded as PAGE_SIZE.
Without this fix any page unaligned zeroing request will trigger a
-EINVAL return from bdev_dax_pgoff().
Cc: Jan Kara <jack@suse.com>
Cc: Christoph Hellwig <hch@lst.de>
Reported-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Tested-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Fixes: cccbce671582 ("filesystem-dax: convert to dax_direct_access()")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'fs/block_dev.c')
0 files changed, 0 insertions, 0 deletions