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authorTejun Heo2019-11-04 15:54:30 -0800
committerTejun Heo2019-11-12 08:18:04 -0800
commit33c5ac9175195c36a0b7005aaf503a2e81f117a1 (patch)
tree15d6857075452a053ad701ae4bb564135ad14998 /Documentation
parentfe0f726c9fb626b1092a9ea3bf75f57f2eed676e (diff)
kernfs: implement custom exportfs ops and fid type
The current kernfs exportfs implementation uses the generic_fh_*() helpers and FILEID_INO32_GEN[_PARENT] which limits ino to 32bits. Let's implement custom exportfs operations and fid type to remove the restriction. * FILEID_KERNFS is a single u64 value whose content is kernfs_node->id. This is the only native fid type. * For backward compatibility with blk_log_action() path which exposes (ino,gen) pairs which userland assembles into FILEID_INO32_GEN keys, combine the generic keys into 64bit IDs in the same order. Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Namhyung Kim <namhyung@kernel.org>
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