maple_tree: document that erase may use GFP_KERNEL for allocations

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State that the mas_erase() and mtree_erase() functions may use GFP_KERNEL
on allocation retry.  Don't just depend on people reading the
documentation by adding a check that will warn of the use.

Link: https://lore.kernel.org/20260821192627.4085470-14-liam@infradead.org
Signed-off-by: Liam R. Howlett (Oracle) <liam@infradead.org>
Reviewed-by: Rik van Riel <riel@surriel.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Breno Leitao <leitao@debian.org>
Cc: Chris Mason <clm@meta.com>
Cc: Chuck Lever <cel@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joe Perches <joe@perches.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

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Liam R. Howlett (Oracle) 2026-08-21 15:26:21 -04:00 • committed by Andrew Morton

parent 35f1342e5b

commit 3f06ef1f34

1 changed files with 21 additions and 2 deletions

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lib/maple_tree.c

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