btrfs: Fix up 32/64-bit compatibility for new ioctls

 This patch casts to unsigned long before casting to a pointer and fixes
 the following warnings:
fs/btrfs/extent_io.c:2289:20: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
fs/btrfs/ioctl.c:2933:37: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
fs/btrfs/ioctl.c:2937:21: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
fs/btrfs/ioctl.c:3020:21: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
fs/btrfs/scrub.c:275:4: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
fs/btrfs/backref.c:686:27: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 8855aad..22c64ff 100644 (file)
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -683,7 +683,7 @@ static int inode_to_path(u64 inum, struct btrfs_inode_ref *iref,
                return PTR_ERR(fspath);
 
        if (fspath > fspath_min) {
-               ipath->fspath->val[i] = (u64)fspath;
+               ipath->fspath->val[i] = (u64)(unsigned long)fspath;
                ++ipath->fspath->elem_cnt;
                ipath->fspath->bytes_left = fspath - fspath_min;
        } else {

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 1f87c4d..47fdba7 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2286,7 +2286,7 @@ static void end_bio_extent_readpage(struct bio *bio, int err)
                }
                if (!uptodate) {
                        u64 failed_mirror;
-                       failed_mirror = (u64)bio->bi_bdev;
+                       failed_mirror = (unsigned long)bio->bi_bdev;
                        if (tree->ops && tree->ops->readpage_io_failed_hook)
                                ret = tree->ops->readpage_io_failed_hook(
                                                bio, page, start, end,

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 4a34c47..bda53fc 100644 (file)
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2930,11 +2930,13 @@ static long btrfs_ioctl_ino_to_path(struct btrfs_root *root, void __user *arg)
                goto out;
 
        for (i = 0; i < ipath->fspath->elem_cnt; ++i) {
-               rel_ptr = ipath->fspath->val[i] - (u64)ipath->fspath->val;
+               rel_ptr = ipath->fspath->val[i] -
+                         (u64)(unsigned long)ipath->fspath->val;
                ipath->fspath->val[i] = rel_ptr;
        }
 
-       ret = copy_to_user((void *)ipa->fspath, (void *)ipath->fspath, size);
+       ret = copy_to_user((void *)(unsigned long)ipa->fspath,
+                          (void *)(unsigned long)ipath->fspath, size);
        if (ret) {
                ret = -EFAULT;
                goto out;
@@ -3017,7 +3019,8 @@ static long btrfs_ioctl_logical_to_ino(struct btrfs_root *root,
        if (ret < 0)
                goto out;
 
-       ret = copy_to_user((void *)loi->inodes, (void *)inodes, size);
+       ret = copy_to_user((void *)(unsigned long)loi->inodes,
+                          (void *)(unsigned long)inodes, size);
        if (ret)
                ret = -EFAULT;
 

diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index f4190f2..fab420d 100644 (file)
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -272,7 +272,7 @@ static int scrub_print_warning_inode(u64 inum, u64 offset, u64 root, void *ctx)
                        swarn->logical, swarn->dev->name,
                        (unsigned long long)swarn->sector, root, inum, offset,
                        min(isize - offset, (u64)PAGE_SIZE), nlink,
-                       (char *)ipath->fspath->val[i]);
+                       (char *)(unsigned long)ipath->fspath->val[i]);
 
        free_ipath(ipath);
        return 0;