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| author |   John Hubbard <jhubbard@nvidia.com> | 2021-09-02 14:53:54 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-03 09:58:11 -0700 |
| commit | 9857a17f206ff374aea78bccfb687f145368be2e (patch) | |
| tree | f1a43556c3df629a5343f3078d212d2dcf9bbad3 /arch/s390 | |
| parent | mm/gup: small refactoring: simplify try_grab_page() (diff) | |
| download | linux-dev-9857a17f206ff374aea78bccfb687f145368be2e.tar.xz linux-dev-9857a17f206ff374aea78bccfb687f145368be2e.zip | |
mm/gup: remove try_get_page(), call try_get_compound_head() directly
try_get_page() is very similar to try_get_compound_head(), and in fact
try_get_page() has fallen a little behind in terms of maintenance:
try_get_compound_head() handles speculative page references more
thoroughly.
There are only two try_get_page() callsites, so just call
try_get_compound_head() directly from those, and remove try_get_page()
entirely.
Also, seeing as how this changes try_get_compound_head() into a non-static
function, provide some kerneldoc documentation for it.
Link: https://lkml.kernel.org/r/20210813044133.1536842-4-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/mm/fault.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index e33c43b38afe..81d760749987 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -817,7 +817,7 @@ void do_secure_storage_access(struct pt_regs *regs) break; case KERNEL_FAULT: page = phys_to_page(addr); - if (unlikely(!try_get_page(page))) + if (unlikely(!try_get_compound_head(page, 1))) break; rc = arch_make_page_accessible(page); put_page(page); |