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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

12
mm/mprotect.c
View File

@@ -538,7 +538,7 @@ static int do_mprotect_pkey(unsigned long start, size_t len,
reqprot = prot;
if (down_write_killable(&current->mm->mmap_sem))
if (mmap_write_lock_killable(current->mm))
return -EINTR;
/*
@@ -628,7 +628,7 @@ static int do_mprotect_pkey(unsigned long start, size_t len,
prot = reqprot;
}
out:
up_write(&current->mm->mmap_sem);
mmap_write_unlock(current->mm);
return error;
}
@@ -658,7 +658,7 @@ SYSCALL_DEFINE2(pkey_alloc, unsigned long, flags, unsigned long, init_val)
if (init_val & ~PKEY_ACCESS_MASK)
return -EINVAL;
down_write(&current->mm->mmap_sem);
mmap_write_lock(current->mm);
pkey = mm_pkey_alloc(current->mm);
ret = -ENOSPC;
@@ -672,7 +672,7 @@ SYSCALL_DEFINE2(pkey_alloc, unsigned long, flags, unsigned long, init_val)
}
ret = pkey;
out:
up_write(&current->mm->mmap_sem);
mmap_write_unlock(current->mm);
return ret;
}
@@ -680,9 +680,9 @@ SYSCALL_DEFINE1(pkey_free, int, pkey)
{
int ret;
down_write(&current->mm->mmap_sem);
mmap_write_lock(current->mm);
ret = mm_pkey_free(current->mm, pkey);
up_write(&current->mm->mmap_sem);
mmap_write_unlock(current->mm);
/*
* We could provie warnings or errors if any VMA still