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mm: perform VMA walk in find_mergeable_anon_vma under RCU read lock
authorSuren Baghdasaryan <surenb@google.com>
Wed, 19 Oct 2022 20:12:19 +0000 (20:12 +0000)
committerSuren Baghdasaryan <surenb@google.com>
Wed, 23 Nov 2022 02:09:46 +0000 (02:09 +0000)
commitd3f6a897b96314e6e3b63f254bcbf5963dbbbb0c
treefc963137420706861202a3130c68e1c6afdb8ad2tree
parent6f712845fed42e5dbaa586ade9f26d3cfda7892acommit | diff
mm: perform VMA walk in find_mergeable_anon_vma under RCU read lock

find_mergeable_anon_vma walks VMA tree unders assumption that the caller
holds mmap_lock for write. Perform this walk under RCU protection to make
it safe without holding this lock.

Signed-off-by: Suren Baghdasaryan <surenb@google.com>
mm/mmap.c diff | blob | history
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