• Steven Whitehouse's avatar
    GFS2: Support for FIEMAP ioctl · e9079cce
    Steven Whitehouse authored
    This patch implements the FIEMAP ioctl for GFS2. We can use the generic
    code (aside from a lock order issue, solved as per Ted Tso's suggestion)
    for which I've introduced a new variant of the generic function. We also
    have one exception to deal with, namely stuffed files, so we do that
    "by hand", setting all the required flags.
    This has been tested with a modified (I could only find an old version) of
    Eric's test program, and appears to work correctly.
    This patch does not currently support FIEMAP of xattrs, but the plan is to add
    that feature at some future point.
    Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
    Cc: Theodore Tso <tytso@mit.edu>
    Cc: Eric Sandeen <sandeen@redhat.com>
ioctl.c 13 KB