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| author | Qinghua Jin <qhjin.dev@gmail.com> | 2022-03-24 02:06:23 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-13 22:01:01 +0300 |
| commit | c9cf6baabf780b60fcfd0fe8357f053184bb876e (patch) | |
| tree | a6dd446a1273f876133409c17fcd8ace7bef9de1 /fs/minix | |
| parent | 8d9efd4434e3479ea624b8e65e57e39a3ea91126 (diff) | |
| download | linux-c9cf6baabf780b60fcfd0fe8357f053184bb876e.tar.xz | |
minix: fix bug when opening a file with O_DIRECT
[ Upstream commit 9ce3c0d26c42d279b6c378a03cd6a61d828f19ca ]
Testcase:
1. create a minix file system and mount it
2. open a file on the file system with O_RDWR|O_CREAT|O_TRUNC|O_DIRECT
3. open fails with -EINVAL but leaves an empty file behind. All other
open() failures don't leave the failed open files behind.
It is hard to check the direct_IO op before creating the inode. Just as
ext4 and btrfs do, this patch will resolve the issue by allowing to
create the file with O_DIRECT but returning error when writing the file.
Link: https://lkml.kernel.org/r/20220107133626.413379-1-qhjin.dev@gmail.com
Signed-off-by: Qinghua Jin <qhjin.dev@gmail.com>
Reported-by: Colin Ian King <colin.king@intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/minix')
| -rw-r--r-- | fs/minix/inode.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/minix/inode.c b/fs/minix/inode.c index 34f546404aa1..e938f5b1e4b9 100644 --- a/fs/minix/inode.c +++ b/fs/minix/inode.c @@ -446,7 +446,8 @@ static const struct address_space_operations minix_aops = { .writepage = minix_writepage, .write_begin = minix_write_begin, .write_end = generic_write_end, - .bmap = minix_bmap + .bmap = minix_bmap, + .direct_IO = noop_direct_IO }; static const struct inode_operations minix_symlink_inode_operations = { |