• Darrick J. Wong's avatar
    xfs: don't allow bmap on rt files · 61d819e7
    Darrick J. Wong authored
    bmap returns a dumb LBA address but not the block device that goes with
    that LBA.  Swapfiles don't care about this and will blindly assume that
    the data volume is the correct blockdev, which is totally bogus for
    files on the rt subvolume.  This results in the swap code doing IOs to
    arbitrary locations on the data device(!) if the passed in mapping is a
    realtime file, so just turn off bmap for rt files.
    Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
    Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
    61d819e7
xfs_aops.c 38.3 KB