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Patch series "mm: memfd_luo hotfixes". This series contains a couple of fixes for memfd preservation using LUO. This patch (of 3): The Live Update Orchestrator's (LUO) memfd preservation works by preserving all the folios of a memfd, re-creating an empty memfd on the next boot, and then inserting back the preserved folios. Currently it creates the file by directly calling shmem_file_setup(). This leaves out other work done by alloc_file() like setting up the file mode, flags, or calling the security hooks. Export alloc_file() to let memfd_luo use it. Rename it to memfd_alloc_file() since it is no longer private and thus needs a subsystem prefix. Link: https://lkml.kernel.org/r/20260122151842.4069702-1-pratyush@kernel.org Link: https://lkml.kernel.org/r/20260122151842.4069702-2-pratyush@kernel.org Signed-off-by: Pratyush Yadav (Google) <pratyush@kernel.org> Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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