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A mirror of the official Linux kernel repository just in case
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Reserve an F2FS feature flag and inode flag for fs-verity. This is an in-development feature that is planned be discussed at LSF/MM 2018 [1]. It will provide file-based integrity and authenticity for read-only files. Most code will be in a filesystem-independent module, with smaller changes needed to individual filesystems that opt-in to supporting the feature. An early prototype supporting F2FS is available [2]. Reserving the F2FS on-disk bits for fs-verity will prevent users of the prototype from conflicting with other new F2FS features. Note that we're reserving the inode flag in f2fs_inode.i_advise, which isn't really appropriate since it's not a hint or advice. But ->i_advise is already being used to hold the 'encrypt' flag; and F2FS's ->i_flags uses the generic FS_* values, so it seems ->i_flags can't be used for an F2FS-specific flag without additional work to remove the assumption that ->i_flags uses the generic flags namespace. [1] https://marc.info/?l=linux-fsdevel&m=151690752225644 [2] https://git.kernel.org/pub/scm/linux/kernel/git/mhalcrow/linux.git/log/?h=fs-verity-dev Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.