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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

14
drivers/xen/privcmd.c
View File

@@ -276,7 +276,7 @@ static long privcmd_ioctl_mmap(struct file *file, void __user *udata)
if (rc || list_empty(&pagelist))
goto out;
down_write(&mm->mmap_sem);
mmap_write_lock(mm);
{
struct page *page = list_first_entry(&pagelist,
@@ -301,7 +301,7 @@ static long privcmd_ioctl_mmap(struct file *file, void __user *udata)
out_up:
up_write(&mm->mmap_sem);
mmap_write_unlock(mm);
out:
free_page_list(&pagelist);
@@ -497,7 +497,7 @@ static long privcmd_ioctl_mmap_batch(
}
}
down_write(&mm->mmap_sem);
mmap_write_lock(mm);
vma = find_vma(mm, m.addr);
if (!vma ||
@@ -553,7 +553,7 @@ static long privcmd_ioctl_mmap_batch(
BUG_ON(traverse_pages_block(m.num, sizeof(xen_pfn_t),
&pagelist, mmap_batch_fn, &state));
up_write(&mm->mmap_sem);
mmap_write_unlock(mm);
if (state.global_error) {
/* Write back errors in second pass. */
@@ -574,7 +574,7 @@ out:
return ret;
out_unlock:
up_write(&mm->mmap_sem);
mmap_write_unlock(mm);
goto out;
}
@@ -739,7 +739,7 @@ static long privcmd_ioctl_mmap_resource(struct file *file, void __user *udata)
if (data->domid != DOMID_INVALID && data->domid != kdata.dom)
return -EPERM;
down_write(&mm->mmap_sem);
mmap_write_lock(mm);
vma = find_vma(mm, kdata.addr);
if (!vma || vma->vm_ops != &privcmd_vm_ops) {
@@ -818,7 +818,7 @@ static long privcmd_ioctl_mmap_resource(struct file *file, void __user *udata)
}
out:
up_write(&mm->mmap_sem);
mmap_write_unlock(mm);
kfree(pfns);
return rc;