[lkml]   [2000]   [Nov]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: bug in count_open_files() or a strange granularity?
   Date:   Tue, 28 Nov 2000 15:13:44 +0000 (GMT)
From: Tigran Aivazian <>

I know that there is no problem due to the way it is called in
copy_files() -- it would only be above 32. But for what I want to
use it, I need the _correct_ number of open file descriptors and
not some "rounded up to 32" one.

That function is static for a reason :-) It is not meant
for external use. What it gives you is the smallest multiple
of (8 * sizeof(long)) which is larger than the largest file
descriptor the task has open.

What you want is something like:

static int num_open_files(struct files_struct *files, int size)
total = 0;
for (i = size / (8 * sizeof(long)); i > 0; )
total += count_bits(files->open_fds->fds_bits[--i]);

return total;

David S. Miller
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Please read the FAQ at

 \ /
  Last update: 2005-03-22 12:47    [W:0.058 / U:0.212 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site