• Mikulas Patocka's avatar
    fs: make cont_expand_zero interruptible · 4a49ed83
    Mikulas Patocka authored
    commit c2ca0fcd upstream.
    
    This patch makes it possible to kill a process looping in
    cont_expand_zero. A process may spend a lot of time in this function, so
    it is desirable to be able to kill it.
    
    It happened to me that I wanted to copy a piece data from the disk to a
    file. By mistake, I used the "seek" parameter to dd instead of "skip". Due
    to the "seek" parameter, dd attempted to extend the file and became stuck
    doing so - the only possibility was to reset the machine or wait many
    hours until the filesystem runs out of space and cont_expand_zero fails.
    We need this patch to be able to terminate the process.
    Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
    Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
    Signed-off-by: default avatarBen Hutchings <ben@decadent.org.uk>
    4a49ed83
buffer.c 87.7 KB