diff options
| author | Omar Sandoval <osandov@fb.com> | 2017-08-23 09:46:00 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2017-09-26 15:48:50 +0300 |
| commit | bea7eafdbda3ba1d4b2ccb9cca829eefb7989bb9 (patch) | |
| tree | 0c7da310c92022c74077534b890bb84a1dc2af22 | |
| parent | 5f14efd3d437205143dcffcf776e0122eae1755a (diff) | |
| download | linux-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>
| -rw-r--r-- | fs/btrfs/ioctl.c | 6 |
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; |