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author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-07-10 09:06:41 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-07-10 09:06:41 -0700 |
commit | 20d5e570aee77afa44849dc652ff256290ea978e (patch) | |
tree | 20ecd71a19945d19f00cf47d1b143c5c99cf8cab /mm/mremap.c | |
parent | 50be9417e23af5a8ac860d998e1e3f06b8fd79d7 (diff) | |
parent | 93274f1dd6b0a615b299beddf99871fe81f91275 (diff) | |
download | linux-20d5e570aee77afa44849dc652ff256290ea978e.tar.bz2 |
Merge branch 'for-5.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu
Pull percpu fix from Dennis Zhou:
"This is just a single change to fix percpu depopulation. The code
relied on depopulation code written specifically for the free path and
relied on vmalloc to do the tlb flush lazily. As we're modifying the
backing pages during the lifetime of a chunk, we need to also flush
the tlb accordingly.
Guenter Roeck reported this issue in [1] on mips. I believe we just
happen to be lucky given the much larger chunk sizes on x86 and
consequently less churning of this memory"
Link: https://lore.kernel.org/lkml/20210702191140.GA3166599@roeck-us.net/ [1]
* 'for-5.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
percpu: flush tlb in pcpu_reclaim_populated()
Diffstat (limited to 'mm/mremap.c')
0 files changed, 0 insertions, 0 deletions