diff options
author | Michel Lespinasse <walken@google.com> | 2020-06-08 21:33:25 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-09 09:39:14 -0700 |
commit | d8ed45c5dcd455fc5848d47f86883a1b872ac0d0 (patch) | |
tree | f9270b32da5f3f7be73b086c99d3dfc29a13161a /arch/um/kernel/trap.c | |
parent | 0adf65f53aae86aa86d8dccada02890545de8938 (diff) | |
download | linux-d8ed45c5dcd455fc5848d47f86883a1b872ac0d0.tar.gz linux-d8ed45c5dcd455fc5848d47f86883a1b872ac0d0.tar.bz2 linux-d8ed45c5dcd455fc5848d47f86883a1b872ac0d0.zip |
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
This change converts the existing mmap_sem rwsem calls to use the new mmap
locking API instead.
The change is generated using coccinelle with the following rule:
// spatch --sp-file mmap_lock_api.cocci --in-place --include-headers --dir .
@@
expression mm;
@@
(
-init_rwsem
+mmap_init_lock
|
-down_write
+mmap_write_lock
|
-down_write_killable
+mmap_write_lock_killable
|
-down_write_trylock
+mmap_write_trylock
|
-up_write
+mmap_write_unlock
|
-downgrade_write
+mmap_write_downgrade
|
-down_read
+mmap_read_lock
|
-down_read_killable
+mmap_read_lock_killable
|
-down_read_trylock
+mmap_read_trylock
|
-up_read
+mmap_read_unlock
)
-(&mm->mmap_sem)
+(mm)
Signed-off-by: Michel Lespinasse <walken@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Liam Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ying Han <yinghan@google.com>
Link: http://lkml.kernel.org/r/20200520052908.204642-5-walken@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/kernel/trap.c')
-rw-r--r-- | arch/um/kernel/trap.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/um/kernel/trap.c b/arch/um/kernel/trap.c index 9c4b7e73ab8d..2b3afa354a90 100644 --- a/arch/um/kernel/trap.c +++ b/arch/um/kernel/trap.c @@ -43,7 +43,7 @@ int handle_page_fault(unsigned long address, unsigned long ip, if (is_user) flags |= FAULT_FLAG_USER; retry: - down_read(&mm->mmap_sem); + mmap_read_lock(mm); vma = find_vma(mm, address); if (!vma) goto out; @@ -116,7 +116,7 @@ good_area: #endif flush_tlb_page(vma, address); out: - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); out_nosemaphore: return err; @@ -125,7 +125,7 @@ out_of_memory: * We ran out of memory, call the OOM killer, and return the userspace * (which will retry the fault, or kill us if we got oom-killed). */ - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); if (!is_user) goto out_nosemaphore; pagefault_out_of_memory(); |