* Mysterious fs ioctl
@ 2019-10-22 1:22 Steve French
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From: Steve French @ 2019-10-22 1:22 UTC (permalink / raw)
To: linux-fsdevel; +Cc: CIFS
Trying to track down this failing ioctl (on a file opened O_DIRECT):
strace showed:
ioctl(4, _IOC(_IOC_WRITE, 0x95, 0x2, 0x4), 0x7ffe5b491664) = -1
ENOTTY (Inappropriate ioctl for device)
I could find ioctls for 0x94 but not 0x95 in kernel source ... any
idea what ioctl
_IOC_WRITE, 0x95, 0x2, 0x4)
is?
Wanted to make sure cifs.ko wasn't missing handling some important
ioctl for O_DIRECT workloads ...
--
Thanks,
Steve
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