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    Subject[PATCH 5.10 448/563] fuse: Pass correct lend value to filemap_write_and_wait_range()
    Date
    From: Xie Yongji <xieyongji@bytedance.com>

    commit e388164ea385f04666c4633f5dc4f951fca71890 upstream.

    The acceptable maximum value of lend parameter in
    filemap_write_and_wait_range() is LLONG_MAX rather than -1. And there is
    also some logic depending on LLONG_MAX check in write_cache_pages(). So
    let's pass LLONG_MAX to filemap_write_and_wait_range() in
    fuse_writeback_range() instead.

    Fixes: 59bda8ecee2f ("fuse: flush extending writes")
    Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
    Cc: <stable@vger.kernel.org> # v5.15
    Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    fs/fuse/file.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/fs/fuse/file.c
    +++ b/fs/fuse/file.c
    @@ -3251,7 +3251,7 @@ fuse_direct_IO(struct kiocb *iocb, struc

    static int fuse_writeback_range(struct inode *inode, loff_t start, loff_t end)
    {
    - int err = filemap_write_and_wait_range(inode->i_mapping, start, -1);
    + int err = filemap_write_and_wait_range(inode->i_mapping, start, LLONG_MAX);

    if (!err)
    fuse_sync_writes(inode);

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