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    Subject[PATCH 4.19 047/114] fuse: honor RLIMIT_FSIZE in fuse_file_fallocate
    Date
    From: Liu Bo <bo.liu@linux.alibaba.com>

    commit 0cbade024ba501313da3b7e5dd2a188a6bc491b5 upstream.

    fstests generic/228 reported this failure that fuse fallocate does not
    honor what 'ulimit -f' has set.

    This adds the necessary inode_newsize_ok() check.

    Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
    Fixes: 05ba1f082300 ("fuse: add FALLOCATE operation")
    Cc: <stable@vger.kernel.org> # v3.5
    Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    fs/fuse/file.c | 7 +++++++
    1 file changed, 7 insertions(+)

    --- a/fs/fuse/file.c
    +++ b/fs/fuse/file.c
    @@ -2975,6 +2975,13 @@ static long fuse_file_fallocate(struct f
    }
    }

    + if (!(mode & FALLOC_FL_KEEP_SIZE) &&
    + offset + length > i_size_read(inode)) {
    + err = inode_newsize_ok(inode, offset + length);
    + if (err)
    + return err;
    + }
    +
    if (!(mode & FALLOC_FL_KEEP_SIZE))
    set_bit(FUSE_I_SIZE_UNSTABLE, &fi->state);


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