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Tue, 23 Jun 2026 08:46:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 54AE51F000E9; Tue, 23 Jun 2026 08:46:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782204392; bh=adywUmALuyG/Z2us7XDrWI8UlRJTGwoFilVn9pM5SKs=; h=Date:Cc:Subject:To:References:From:In-Reply-To; b=V0ryzxmwF9C1X6LxvNYrcYwPCM+TpHcm/pwjjlg+RUtH97q5JkxeKhnAaFc2240KY UdjqFGEhUsW8dOhSe2xDrf1d8P0+eSD/LizmY6iMOo4MVUe/uwonNPh0cCkHEzgwV4 Wtga5eJgQh7HnDGVHfzs2P6n0FcV2qy90pEsZkKLhKAAdUTm5OuwT1sUs1ytcuohg9 8LIVjA+5bCe30Op6FaUmAjQ+19HJnljzgAOC0dEOUAtxe4DjDYcQeMx70KZTJ9LdVk /udP8iXBckeBfDpSuqcohO8Yzed/sXvMGVXw+wnFNYRxHxYYrQx3h8x4OsG75guq+C KsN9r4Sq9RnBw== Message-ID: <698bcb3a-38d8-479a-b0e0-13d23a08743d@kernel.org> Date: Tue, 23 Jun 2026 16:46:29 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird To: Jan Prusakowski , fstests@vger.kernel.org References: <20260622070438.1542638-1-jprusakowski@google.com> Content-Language: en-US In-Reply-To: <20260622070438.1542638-1-jprusakowski@google.com> X-Headers-End: 1wbwmI-0005Xl-GQ Subject: Re: [f2fs-dev] [PATCH] generic/064: allow 50 extents on F2FS after fcollapse X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Chao Yu via Linux-f2fs-devel Reply-To: Chao Yu Cc: jaegeuk@kernel.org, zlang@kernel.org, linux-f2fs-devel@lists.sourceforge.net Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On 6/22/26 15:04, Jan Prusakowski via Linux-f2fs-devel wrote: > On F2FS, generic/064 fails with "extents mismatched before = 1 after = > 50" following multiple fcollapse (collapse range) operations. > > To ensure crash consistency and checkpoint integrity, F2FS forbids > in-place SSR (Summary Standalone Replacement) overwrites on valid > checkpointed blocks. When collapse range shifts blocks, F2FS allocates > new data pages in LFS mode (out-of-place log writes). As a result, > sequential collapse range calls rewrite shifted blocks at new log > locations, intentionally leaving the file with 50 extents. > > Adjust the extent verification in generic/064 to expect exactly 50 > extents on F2FS, while preserving the strict 1-extent requirement for > all other filesystems. Data integrity continues to be verified via byte > comparison. > > Signed-off-by: Jaegeuk Kim > Signed-off-by: Jan Prusakowski Reviewed-by: Chao Yu Thanks, _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel