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| author | Vivek Goyal <vgoyal@redhat.com> | 2020-04-01 12:11:25 -0400 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2020-04-02 19:15:03 -0700 |
| commit | 4e4ced93794acb42adb19484132966defba8f3a6 (patch) | |
| tree | 2a63f73c19e052bb5b7fa283545cd9349447d21e /mm | |
| parent | 4f3b4f161d7a070d2181dbcf7fbd97c7631d5c24 (diff) | |
| download | lwn-4e4ced93794acb42adb19484132966defba8f3a6.tar.gz lwn-4e4ced93794acb42adb19484132966defba8f3a6.zip | |
dax: Move mandatory ->zero_page_range() check in alloc_dax()
zero_page_range() dax operation is mandatory for dax devices. Right now
that check happens in dax_zero_page_range() function. Dan thinks that's
too late and its better to do the check earlier in alloc_dax().
I also modified alloc_dax() to return pointer with error code in it in
case of failure. Right now it returns NULL and caller assumes failure
happened due to -ENOMEM. But with this ->zero_page_range() check, I
need to return -EINVAL instead.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Link: https://lore.kernel.org/r/20200401161125.GB9398@redhat.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions