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| /openbmc/linux/fs/f2fs/ |
| H A D | file.c | diff 360985573b556db415daf93e34ce103ec0ee1fe5 Wed Jun 05 00:59:04 CDT 2019 Eric Biggers <ebiggers@google.com> f2fs: separate f2fs i_flags from fs_flags and ext4 i_flags
f2fs copied all the on-disk i_flags from ext4, and along with it the
assumption that the on-disk i_flags are the same as the bits used by
FS_IOC_GETFLAGS and FS_IOC_SETFLAGS. This is problematic because
reserving an on-disk inode flag in either filesystem's i_flags or in
these ioctls effectively reserves it in all the other places too. In
fact, most of the "f2fs i_flags" are not used by f2fs at all.
Fix this by separating f2fs's i_flags from the ioctl bits and ext4's
i_flags.
In the process, un-reserve all "f2fs i_flags" that aren't actually
supported by f2fs. This included various flags that were not settable
at all, as well as various flags that were settable by FS_IOC_SETFLAGS
but didn't actually do anything.
There's a slight chance we'll need to add some flag(s) back to
FS_IOC_SETFLAGS in order to avoid breaking users who expect f2fs to
accept some random flag(s). But hopefully such users don't exist.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
| H A D | f2fs.h | diff 360985573b556db415daf93e34ce103ec0ee1fe5 Wed Jun 05 00:59:04 CDT 2019 Eric Biggers <ebiggers@google.com> f2fs: separate f2fs i_flags from fs_flags and ext4 i_flags
f2fs copied all the on-disk i_flags from ext4, and along with it the
assumption that the on-disk i_flags are the same as the bits used by
FS_IOC_GETFLAGS and FS_IOC_SETFLAGS. This is problematic because
reserving an on-disk inode flag in either filesystem's i_flags or in
these ioctls effectively reserves it in all the other places too. In
fact, most of the "f2fs i_flags" are not used by f2fs at all.
Fix this by separating f2fs's i_flags from the ioctl bits and ext4's
i_flags.
In the process, un-reserve all "f2fs i_flags" that aren't actually
supported by f2fs. This included various flags that were not settable
at all, as well as various flags that were settable by FS_IOC_SETFLAGS
but didn't actually do anything.
There's a slight chance we'll need to add some flag(s) back to
FS_IOC_SETFLAGS in order to avoid breaking users who expect f2fs to
accept some random flag(s). But hopefully such users don't exist.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|