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linux/fs/overlayfs
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Miklos Szeredi 1dc1eed46f ovl: fix IOCB_DIRECT if underlying fs doesn't support direct IO 
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: 16914e6fc7 ("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>
History 2021-09-28 09:16:12 +02:00
..
copy_up.c ovl: use kvalloc in xattr copy-up 2021-08-17 11:47:45 +02:00
dir.c ovl: fix missing negative dentry check in ovl_rename() 2021-09-24 21:00:31 +02:00
export.c ovl: fix uninitialized pointer read in ovl_lookup_real_one() 2021-08-10 10:21:30 +02:00
file.c ovl: fix IOCB_DIRECT if underlying fs doesn't support direct IO 2021-09-28 09:16:12 +02:00
inode.c ovl: enable RCU'd ->get_acl() 2021-08-18 22:08:24 +02:00
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 ovl: relax lookup error on mismatch origin ftype 2021-08-17 11:47:44 +02:00
overlayfs.h vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
ovl_entry.h ovl: implement volatile-specific fsync error behaviour 2021-01-28 10:22:48 +01:00
readdir.c ovl: skip stale entries in merge dir cache iteration 2021-08-10 10:21:30 +02:00
super.c ovl: add ovl_allow_offline_changes() helper 2021-08-17 11:47:44 +02:00
util.c ovl: consistent behavior for immutable/append-only inodes 2021-08-17 11:47:43 +02:00