memfd: implement get_id for memfd_luo

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Memfds are identified by their underlying inode.  Implement get_id for
memfd_luo to return the inode pointer.  This prevents the same memfd from
being managed twice by LUO if the same inode is pointed by multiple file
objects.

Link: https://lore.kernel.org/20260326163943.574070-3-pasha.tatashin@soleen.com
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Pratyush Yadav (Google) <pratyush@kernel.org>
Cc: David Matlack <dmatlack@google.com>
Cc: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Samiullah Khawaja <skhawaja@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Christian Brauner <brauner@kernel.org> 
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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Pasha Tatashin 2026-03-26 16:39:42 +00:00 • committed by Andrew Morton

parent 00d0b37237

commit bc3a5763f4

1 changed files with 6 additions and 0 deletions

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mm/memfd_luo.c

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