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    unbreak automounter support on 64-bit kernel with 32-bit userspace (v2) · 4f4ffc3a
    Helge Deller 提交于
    automount-support is broken on the parisc architecture, because the existing
    #if list does not include a check for defined(__hppa__). The HPPA (parisc)
    architecture is similiar to other 64bit Linux targets where we have to define
    autofs_wqt_t (which is passed back and forth to user space) as int type which
    has a size of 32bit across 32 and 64bit kernels.
    
    During the discussion on the mailing list, H. Peter Anvin suggested to invert
    the #if list since only specific platforms (specifically those who do not have
    a 32bit userspace, like IA64 and Alpha) should have autofs_wqt_t as unsigned
    long type.
    
    This suggestion is probably the best way to go, since Arm64 (and maybe others?)
    seems to have a non-working automounter. So in the long run even for other new
    upcoming architectures this inverted check seem to be the best solution, since
    it will not require them to change this #if again (unless they are 64bit only).
    Signed-off-by: NHelge Deller <deller@gmx.de>
    Acked-by: NH. Peter Anvin <hpa@zytor.com>
    Acked-by: NIan Kent <raven@themaw.net>
    Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
    CC: James Bottomley <James.Bottomley@HansenPartnership.com>
    CC: Rolf Eike Beer <eike-kernel@sf-tec.de>
    4f4ffc3a
auto_fs.h 2.3 KB