From: Linus Torvalds Date: Thu, 14 Jul 2022 22:35:24 +0000 (-0700) Subject: Revert "vf/remap: return the amount of bytes actually deduplicated" X-Git-Tag: v6.1-rc5~898 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b926f2adb0442090351dc8321ec1f99b22e372da;p=platform%2Fkernel%2Flinux-starfive.git Revert "vf/remap: return the amount of bytes actually deduplicated" This reverts commit 4a57a8400075bc5287c5c877702c68aeae2a033d. Dave Chinner reports: "As I suspected would occur, this change causes test failures. e.g generic/517 in fstests fails with: generic/517 1s ... - output mismatch [..] -deduped 131172/131172 bytes at offset 65536 +deduped 131072/131172 bytes at offset 65536" can you please revert this commit for the 5.19 series to give us more time to investigate and consider the impact of the the API change on userspace applications before we commit to changing the API" That changed return value seems to reflect reality, but with the fstest change, let's revert for now. Requested-by: Dave Chinner Link: https://lore.kernel.org/all/20220714223238.GH3600936@dread.disaster.area/ Cc: Ansgar Lößer Signed-off-by: Linus Torvalds --- diff --git a/fs/remap_range.c b/fs/remap_range.c index 5e0d97e..881a306 100644 --- a/fs/remap_range.c +++ b/fs/remap_range.c @@ -547,7 +547,7 @@ int vfs_dedupe_file_range(struct file *file, struct file_dedupe_range *same) else if (deduped < 0) info->status = deduped; else - info->bytes_deduped = deduped; + info->bytes_deduped = len; next_fdput: fdput(dst_fd);