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Mon, 17 Mar 2025 12:08:15 -0700 (PDT) Received: from daehojeong-desktop.mtv.corp.google.com ([2a00:79e0:2e14:7:c666:1585:cbfe:4666]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-af56ea041e7sm6298349a12.44.2025.03.17.12.08.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Mar 2025 12:08:15 -0700 (PDT) From: Daeho Jeong To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, kernel-team@android.com Date: Mon, 17 Mar 2025 12:08:09 -0700 Message-ID: <20250317190809.678626-1-daeho43@gmail.com> X-Mailer: git-send-email 2.49.0.rc1.451.g8f38331e32-goog MIME-Version: 1.0 X-Headers-End: 1tuFp4-0001NN-6A Subject: [f2fs-dev] [PATCH] f2fs: support zero sized file truncate for device aliasing files 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: , Cc: Daeho Jeong Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Daeho Jeong support a file truncation to zero size for device aliasing files. Signed-off-by: Daeho Jeong --- fs/f2fs/file.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index f92a9fba9991..7ae5a5af5ed9 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1036,7 +1036,7 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, if ((attr->ia_valid & ATTR_SIZE)) { if (!f2fs_is_compress_backend_ready(inode) || - IS_DEVICE_ALIASING(inode)) + (IS_DEVICE_ALIASING(inode) && attr->ia_size)) return -EOPNOTSUPP; if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED) && !IS_ALIGNED(attr->ia_size, @@ -1117,6 +1117,9 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, if (err) return err; + if (IS_DEVICE_ALIASING(inode)) + f2fs_destroy_extent_tree(inode); + spin_lock(&fi->i_size_lock); inode_set_mtime_to_ts(inode, inode_set_ctime_current(inode)); fi->last_disk_size = i_size_read(inode);