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  • Matthew Wilcox's avatar
    dax: does not work correctly with virtual aliasing caches · d92576f1
    Matthew Wilcox authored
    
    
    The DAX code accesses the underlying storage through the kernel's linear
    mapping, which may not be cache-coherent with user mappings on ARM, MIPS
    or SPARC.  Temporarily disable the DAX code until this problem is
    resolved.
    
    The original XIP code also had this problem, but it was never noticed.
    
    Signed-off-by: default avatarMatthew Wilcox <matthew.r.wilcox@intel.com>
    Cc: Andreas Dilger <andreas.dilger@intel.com>
    Cc: Boaz Harrosh <boaz@plexistor.com>
    Cc: Christoph Hellwig <hch@lst.de>
    Cc: Dave Chinner <david@fromorbit.com>
    Cc: Jan Kara <jack@suse.cz>
    Cc: Jens Axboe <axboe@kernel.dk>
    Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
    Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
    Cc: Randy Dunlap <rdunlap@infradead.org>
    Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
    Cc: Theodore Ts'o <tytso@mit.edu>
    Cc: Ralf Baechle <ralf@linux-mips.org>
    Cc: Russell King <rmk@arm.linux.org.uk>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    d92576f1