linux-kernel - [PATCH 1/2] f2fs: allow f2fs_ioc_{,de}compress

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Date:   Wed, 12 Jul 2023 04:08:05 +0800
From:   Chao Yu <chao@...nel.org>
To:     jaegeuk@...nel.org
Cc:     linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, Chao Yu <chao@...nel.org>
Subject: [PATCH 1/2] 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.

Signed-off-by: Chao Yu <chao@...nel.org>
---
 fs/f2fs/file.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index d9073afe021f..79cb6a41f128 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -4107,6 +4107,12 @@ static int f2fs_ioc_decompress_file(struct file *filp)
 
 		count -= len;
 		page_idx += len;
+
+		cond_resched();
+		if (fatal_signal_pending(current)) {
+			ret = -EINTR;
+			break;
+		}
 	}
 
 	if (!ret)
@@ -4181,6 +4187,12 @@ static int f2fs_ioc_compress_file(struct file *filp)
 
 		count -= len;
 		page_idx += len;
+
+		cond_resched();
+		if (fatal_signal_pending(current)) {
+			ret = -EINTR;
+			break;
+		}
 	}
 
 	if (!ret)
-- 
2.40.1