From 1267a07be5ebbff2d2739290f3d043ae137c15b4 Mon Sep 17 00:00:00 2001 From: "Ernesto A. Fernández" Date: Tue, 30 Oct 2018 15:06:24 -0700 Subject: hfs: fix return value of hfs_get_block() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Direct writes to empty inodes fail with EIO. The generic direct-io code is in part to blame (a patch has been submitted as "direct-io: allow direct writes to empty inodes"), but hfs is worse affected than the other filesystems because the fallback to buffered I/O doesn't happen. The problem is the return value of hfs_get_block() when called with !create. Change it to be more consistent with the other modules. Link: http://lkml.kernel.org/r/4538ab8c35ea37338490525f0f24cbc37227528c.1539195310.git.ernesto.mnd.fernandez@gmail.com Signed-off-by: Ernesto A. Fernández Reviewed-by: Vyacheslav Dubeyko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hfs/extent.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'fs/hfs') diff --git a/fs/hfs/extent.c b/fs/hfs/extent.c index 0c638c612152..5f1ff97a3b98 100644 --- a/fs/hfs/extent.c +++ b/fs/hfs/extent.c @@ -345,7 +345,9 @@ int hfs_get_block(struct inode *inode, sector_t block, ablock = (u32)block / HFS_SB(sb)->fs_div; if (block >= HFS_I(inode)->fs_blocks) { - if (block > HFS_I(inode)->fs_blocks || !create) + if (!create) + return 0; + if (block > HFS_I(inode)->fs_blocks) return -EIO; if (ablock >= HFS_I(inode)->alloc_blocks) { res = hfs_extend_file(inode); -- cgit