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(parent: a95d133) | patch
powerpc/mm: Avoid useless lock with single page fragments
authorChristophe Leroy <christophe.leroy@c-s.fr>
Thu, 29 Nov 2018 14:06:53 +0000 (14:06 +0000)
committerMichael Ellerman <mpe@ellerman.id.au>
Tue, 4 Dec 2018 08:45:01 +0000 (19:45 +1100)
commit2a146533bf96af3fba97b1c91efe0416b1b24b95
tree6b088db9efed497fbd2f43fe1b95d25988037ac3tree
parenta95d133c8643cae40a35f82184640d312ba9f11fcommit | diff
powerpc/mm: Avoid useless lock with single page fragments

There is no point in taking the page table lock as pte_frag or
pmd_frag are always NULL when we have only one fragment.

Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/mm/pgtable-book3s64.c diff | blob | history
arch/powerpc/mm/pgtable-frag.c diff | blob | history
XArray, radix tree and IDR