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authorOmar Sandoval <osandov@fb.com>2017-08-23 09:46:00 +0300
committerDavid Sterba <dsterba@suse.com>2017-09-26 15:48:50 +0300
commitbea7eafdbda3ba1d4b2ccb9cca829eefb7989bb9 (patch)
tree0c7da310c92022c74077534b890bb84a1dc2af22 /fs/btrfs/ioctl.c
parent5f14efd3d437205143dcffcf776e0122eae1755a (diff)
downloadlinux-bea7eafdbda3ba1d4b2ccb9cca829eefb7989bb9.tar.xz
Btrfs: fix incorrect {node,sector}size endianness from BTRFS_IOC_FS_INFO
fs_info->super_copy->{node,sector}size are little-endian, but the ioctl should return the values in native endianness. Use the cached values in btrfs_fs_info instead. Found with sparse. Fixes: 80a773fbfc2d ("btrfs: retrieve more info from FS_INFO ioctl") Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/ioctl.c')
-rw-r--r--fs/btrfs/ioctl.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index ae8fbf9d3de2..cf1c2ee030dd 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2769,9 +2769,9 @@ static long btrfs_ioctl_fs_info(struct btrfs_fs_info *fs_info,
}
mutex_unlock(&fs_devices->device_list_mutex);
- fi_args->nodesize = fs_info->super_copy->nodesize;
- fi_args->sectorsize = fs_info->super_copy->sectorsize;
- fi_args->clone_alignment = fs_info->super_copy->sectorsize;
+ fi_args->nodesize = fs_info->nodesize;
+ fi_args->sectorsize = fs_info->sectorsize;
+ fi_args->clone_alignment = fs_info->sectorsize;
if (copy_to_user(arg, fi_args, sizeof(*fi_args)))
ret = -EFAULT;