Messages in this thread | | | Date | Sun, 10 Dec 2000 16:53:24 +0000 (GMT) | From | Tigran Aivazian <> | Subject | Re: [PATCH] NR_RESERVED_FILES broken in 2.4 too |
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Hi,
> user% ./fd-exhaustion # e.g. while(1) open("/dev/null",...); > root# cat /proc/sys/fs/file-nr > cat: /proc/sys/fs/file-nr: Too many open files in system > > The above happens even with increased NR_RESERVED_FILES to 96 [no > wonder, get_empty_filp is broken].
no, it is not broken. But your experiment is broken. Don't do cat file-nr but compile this C program #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> #include <fcntl.h> #include <stdio.h> #include <stdlib.h>
int main(int argc, char *argv[]) { int fd, len; static char buf[2048];
fd = open("/proc/sys/fs/file-nr", O_RDONLY); if (fd == -1) { perror("open"); exit(1); } while (1) { len = read(fd, buf, 1024); printf("len=%d %s", len, buf); lseek(fd, 0, SEEK_SET); sleep(1); } return 0; }
and leave it running while doing experiments on the other console. You will see that everything is fine -- there is no bug. No wonder you saw the bug -- you ignored my 4 emails telling you otherwise :)
Regards, Tigran
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