• Vishal Verma's avatar
    libnvdimm: add an atomic vs process context flag to rw_bytes · 3ae3d67b
    Vishal Verma authored
    nsio_rw_bytes can clear media errors, but this cannot be done while we
    are in an atomic context due to locking within ACPI. From the BTT,
    ->rw_bytes may be called either from atomic or process context depending
    on whether the calls happen during initialization or during IO.
    
    During init, we want to ensure error clearing happens, and the flag
    marking process context allows nsio_rw_bytes to do that. When called
    during IO, we're in atomic context, and error clearing can be skipped.
    
    Cc: Dan Williams <dan.j.williams@intel.com>
    Signed-off-by: default avatarVishal Verma <vishal.l.verma@intel.com>
    Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
    3ae3d67b
btt_devs.c 8.05 KB