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 /mm/msync.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 'mm/msync.c')
-rw-r--r-- | mm/msync.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/msync.c b/mm/msync.c index c3bd3e75f687..69c6d2029531 100644 --- a/mm/msync.c +++ b/mm/msync.c @@ -57,7 +57,7 @@ SYSCALL_DEFINE3(msync, unsigned long, start, size_t, len, int, flags) * If the interval [start,end) covers some unmapped address ranges, * just ignore them, but return -ENOMEM at the end. */ - down_read(&mm->mmap_sem); + mmap_read_lock(mm); vma = find_vma(mm, start); for (;;) { struct file *file; @@ -88,12 +88,12 @@ SYSCALL_DEFINE3(msync, unsigned long, start, size_t, len, int, flags) if ((flags & MS_SYNC) && file && (vma->vm_flags & VM_SHARED)) { get_file(file); - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); error = vfs_fsync_range(file, fstart, fend, 1); fput(file); if (error || start >= end) goto out; - down_read(&mm->mmap_sem); + mmap_read_lock(mm); vma = find_vma(mm, start); } else { if (start >= end) { @@ -104,7 +104,7 @@ SYSCALL_DEFINE3(msync, unsigned long, start, size_t, len, int, flags) } } out_unlock: - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); out: return error ? : unmapped_error; } |