Mikulas Patocka
da8b4fc1f6
dm integrity: only allocate recalculate buffer when needed
...
dm-integrity preallocated 8MiB buffer for recalculating in the
constructor and freed it in the destructor. This wastes memory when
the user has many dm-integrity devices.
Fix dm-integrity so that the buffer is only allocated when
recalculation is in progress; allocate the buffer at the beginning of
integrity_recalc() and free it at the end.
Note that integrity_recalc() doesn't hold any locks when allocating
the buffer, so it shouldn't cause low-memory deadlock.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
2023-06-27 16:02:18 -04:00
..
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