introduce fd_file(), convert all accessors to it.

	For any changes of struct fd representation we need to
turn existing accesses to fields into calls of wrappers.
Accesses to struct fd::flags are very few (3 in linux/file.h,
1 in net/socket.c, 3 in fs/overlayfs/file.c and 3 more in
explicit initializers).
	Those can be dealt with in the commit converting to
new layout; accesses to struct fd::file are too many for that.
	This commit converts (almost) all of f.file to
fd_file(f).  It's not entirely mechanical ('file' is used as
a member name more than just in struct fd) and it does not
even attempt to distinguish the uses in pointer context from
those in boolean context; the latter will be eventually turned
into a separate helper (fd_empty()).

	NOTE: mass conversion to fd_empty(), tempting as it
might be, is a bad idea; better do that piecewise in commit
that convert from fdget...() to CLASS(...).

[conflicts in fs/fhandle.c, kernel/bpf/syscall.c, mm/memcontrol.c
caught by git; fs/stat.c one got caught by git grep]
[fs/xattr.c conflict]

Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
index 863b2a34b2d6..a9298cb8d19a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
@@ -43,10 +43,10 @@ static int amdgpu_sched_process_priority_override(struct amdgpu_device *adev,
 	uint32_t id;
 	int r;
 
-	if (!f.file)
+	if (!fd_file(f))
 		return -EINVAL;
 
-	r = amdgpu_file_to_fpriv(f.file, &fpriv);
+	r = amdgpu_file_to_fpriv(fd_file(f), &fpriv);
 	if (r) {
 		fdput(f);
 		return r;
@@ -72,10 +72,10 @@ static int amdgpu_sched_context_priority_override(struct amdgpu_device *adev,
 	struct amdgpu_ctx *ctx;
 	int r;
 
-	if (!f.file)
+	if (!fd_file(f))
 		return -EINVAL;
 
-	r = amdgpu_file_to_fpriv(f.file, &fpriv);
+	r = amdgpu_file_to_fpriv(fd_file(f), &fpriv);
 	if (r) {
 		fdput(f);
 		return r;