• Benjamin Marzinski's avatar
    GFS2: make sure fallocate bytes is a multiple of blksize · 6905d9e4
    Benjamin Marzinski authored
    The GFS2 fallocate code chooses a target size to for allocating chunks of
    space.  Whenever it can't find any resource groups with enough space free, it
    halves its target. Since this target is in bytes, eventually it will no longer
    be a multiple of blksize.  As long as there is more space available in the
    resource group than the target, this isn't a problem, since gfs2 will use the
    actual space available, which is always a multiple of blksize.  However,
    when gfs couldn't fallocate a bigger chunk than the target, it was using the
    non-blksize aligned number. This caused a BUG in later code that required
    blksize aligned offsets.  GFS2 now ensures that bytes is always a multiple of
    blksize
    Signed-off-by: default avatarBenjamin Marzinski <bmarzins@redhat.com>
    Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
    6905d9e4
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