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mm/sparse: use MEMBLOCK_ALLOC_ACCESSIBLE enum instead of 0

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Setting 'limit' variable to 0 might seem like it means "no limit".  But in
the memblock API, 0 actually means the 'MEMBLOCK_ALLOC_ACCESSIBLE' enum,
which limits the physical address range end based on
'memblock.current_limit'.  This could be confusing.

Use the enum instead of 0 to make it clear.

Link: https://lkml.kernel.org/r/20240610151528.943680-1-lsahn@wewakecorp.com
Signed-off-by: Leesoo Ahn <lsahn@ooseel.net>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Leesoo Ahn 2024-06-11 00:15:28 +09:00 committed by Andrew Morton
parent 735ecdfaf4
commit afb90a36c6
1 changed files with 1 additions and 1 deletions
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mm/sparse.c
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@ -351,7 +351,7 @@ sparse_early_usemaps_alloc_pgdat_section(struct pglist_data *pgdat,
again:
usage = memblock_alloc_try_nid(size, SMP_CACHE_BYTES, goal, limit, nid);
if (!usage && limit) {
limit = 0;
limit = MEMBLOCK_ALLOC_ACCESSIBLE;
goto again;
}
return usage;