Miklos Szeredi 1bc2f315a2 ovl: fix IOCB_DIRECT if underlying fs doesn't support direct IO ...

commit 1dc1eed46f9fa4cb8a07baa24fb44c96d6dd35c9 upstream.

Normally the check at open time suffices, but e.g loop device does set
IOCB_DIRECT after doing its own checks (which are not sufficent for
overlayfs).

Make sure we don't call the underlying filesystem read/write method with
the IOCB_DIRECT if it's not supported.

Reported-by: Huang Jianan <huangjianan@oppo.com>
Fixes: 16914e6fc7e1 ("ovl: add ovl_read_iter()")
Cc: <stable@vger.kernel.org> # v4.19
Tested-by: Huang Jianan <huangjianan@oppo.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2021-10-13 10:04:23 +02:00

..

copy_up.c

ovl: fix missing revert_creds() on error path

2021-05-14 09:50:05 +02:00

dir.c

ovl: fix missing negative dentry check in ovl_rename()

2021-10-13 10:04:23 +02:00

export.c

ovl: fix uninitialized pointer read in ovl_lookup_real_one()

2021-09-03 10:09:22 +02:00

file.c

ovl: fix IOCB_DIRECT if underlying fs doesn't support direct IO

2021-10-13 10:04:23 +02:00

inode.c

ovl: perform vfs_getxattr() with mounter creds

2021-02-17 11:02:22 +01:00

Kconfig

docs: fix broken references to text files

2020-04-20 15:35:59 -06:00

Makefile

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21 10:50:46 +02:00

namei.c

new helper: inode_wrong_type()

2021-09-08 08:49:01 +02:00

overlayfs.h

ovl: invalidate readdir cache on changes to dir with origin

2021-05-14 09:50:35 +02:00

ovl_entry.h

ovl: implement volatile-specific fsync error behaviour

2021-02-10 09:29:16 +01:00

readdir.c

ovl: invalidate readdir cache on changes to dir with origin

2021-05-14 09:50:35 +02:00

super.c

ovl: allow upperdir inside lowerdir

2021-05-07 11:04:33 +02:00

util.c

ovl: invalidate readdir cache on changes to dir with origin

2021-05-14 09:50:35 +02:00