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    Subject[PATCH 4.5 099/101] Btrfs: dont use src fd for printk
    Date
    4.5-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Josef Bacik <jbacik@fb.com>

    commit c79b4713304f812d3d6c95826fc3e5fc2c0b0c14 upstream.

    The fd we pass in may not be on a btrfs file system, so don't try to do
    BTRFS_I() on it. Thanks,

    Signed-off-by: Josef Bacik <jbacik@fb.com>
    Reviewed-by: David Sterba <dsterba@suse.com>
    Signed-off-by: David Sterba <dsterba@suse.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    fs/btrfs/ioctl.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/fs/btrfs/ioctl.c
    +++ b/fs/btrfs/ioctl.c
    @@ -1657,7 +1657,7 @@ static noinline int btrfs_ioctl_snap_cre

    src_inode = file_inode(src.file);
    if (src_inode->i_sb != file_inode(file)->i_sb) {
    - btrfs_info(BTRFS_I(src_inode)->root->fs_info,
    + btrfs_info(BTRFS_I(file_inode(file))->root->fs_info,
    "Snapshot src from another FS");
    ret = -EXDEV;
    } else if (!inode_owner_or_capable(src_inode)) {

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