Re: [syzbot] WARNING in mntput_no_expire (3)

[syzbot]

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

fs/file_table.c:377:22: error: implicit declaration of function 'real_mount'; did you mean 'kern_mount'? [-Werror=implicit-function-declaration]
fs/file_table.c:378:16: error: implicit declaration of function 'mnt_get_count'; did you mean 'init_page_count'? [-Werror=implicit-function-declaration]
fs/file_table.c:380:13: error: invalid use of undefined type 'struct mount'


Tested on:

commit:         feb9c5e1 Merge tag 'for_linus' of git://git.kernel.org..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
dashboard link: https://syzkaller.appspot.com/bug?extid=5b1e53987f858500ec00
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
patch:          https://syzkaller.appspot.com/x/patch.diff?x=16788769f00000