UPSTREAM: f2fs: allow f2fs_ioc_{,de}compress_file to be interrupted

This patch allows f2fs_ioc_{,de}compress_file() to be interrupted, so that,
userspace won't be blocked when manual {,de}compression on large file is
interrupted by signal.

Bug: 325092012
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
(cherry picked from commit 3a2c0e55)
(cherry picked from https://android-review.googlesource.com/q/commit:3b2e004494de3fa54fffaf220eeb1512cc49dada)
Merged-In: I020026926732b184f227621cd64506dae92a00a1
Change-Id: I020026926732b184f227621cd64506dae92a00a1