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mmap locking API: use coccinelle to convert mmap_sem rwsem call sites

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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>
This commit is contained in:
Michel Lespinasse
2020-06-08 21:33:25 -07:00
committed by Linus Torvalds
parent 0adf65f53a
commit d8ed45c5dc
148 changed files with 645 additions and 645 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
arch/sparc/mm/fault_32.c
View File

@@ -195,7 +195,7 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
retry:
down_read(&mm->mmap_sem);
mmap_read_lock(mm);
if (!from_user && address >= PAGE_OFFSET)
goto bad_area;
@@ -271,7 +271,7 @@ good_area:
}
}
up_read(&mm->mmap_sem);
mmap_read_unlock(mm);
return;
/*
@@ -279,7 +279,7 @@ good_area:
* Fix it, but check if it's kernel or user first..
*/
bad_area:
up_read(&mm->mmap_sem);
mmap_read_unlock(mm);
bad_area_nosemaphore:
/* User mode accesses just cause a SIGSEGV */
@@ -328,7 +328,7 @@ no_context:
* us unable to handle the page fault gracefully.
*/
out_of_memory:
up_read(&mm->mmap_sem);
mmap_read_unlock(mm);
if (from_user) {
pagefault_out_of_memory();
return;
@@ -336,7 +336,7 @@ out_of_memory:
goto no_context;
do_sigbus:
up_read(&mm->mmap_sem);
mmap_read_unlock(mm);
do_fault_siginfo(BUS_ADRERR, SIGBUS, regs, text_fault);
if (!from_user)
goto no_context;
@@ -390,7 +390,7 @@ static void force_user_fault(unsigned long address, int write)
code = SEGV_MAPERR;
down_read(&mm->mmap_sem);
mmap_read_lock(mm);
vma = find_vma(mm, address);
if (!vma)
goto bad_area;
@@ -415,15 +415,15 @@ good_area:
case VM_FAULT_OOM:
goto do_sigbus;
}
up_read(&mm->mmap_sem);
mmap_read_unlock(mm);
return;
bad_area:
up_read(&mm->mmap_sem);
mmap_read_unlock(mm);
__do_fault_siginfo(code, SIGSEGV, tsk->thread.kregs, address);
return;
do_sigbus:
up_read(&mm->mmap_sem);
mmap_read_unlock(mm);
__do_fault_siginfo(BUS_ADRERR, SIGBUS, tsk->thread.kregs, address);
}