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| author | Mikulas Patocka <mpatocka@redhat.com> | 2014-07-27 19:00:41 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-10-09 08:39:03 +0200 |
| commit | c2ca0fcd202863b14bd041a7fece2e789926c225 (patch) | |
| tree | 3f2691b8fb5b471bad886dce7a2680b824b081dd /kernel/printk/braille.h | |
| parent | Add copy_to_iter(), copy_from_iter() and iov_iter_zero() (diff) | |
| download | linux-c2ca0fcd202863b14bd041a7fece2e789926c225.tar.xz linux-c2ca0fcd202863b14bd041a7fece2e789926c225.zip | |
fs: make cont_expand_zero interruptible
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: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'kernel/printk/braille.h')
0 files changed, 0 insertions, 0 deletions