f1ee656d4d
F2FS returns EINVAL from FS_IOC_SETFLAGS when trying to set FS_NOCOW_FL. Let's handle this by treating EINVAL as not supported. While we're at it, make sure we use ERRNO_IS_IOCTL_NOT_SUPPORTED() across the tree instead of ERRNO_IS_NOT_SUPPORTED() when calling any of the chattr_xxx() functions. Fixes #37593
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