Is vnode number also limit system-wide number of open file?

[riel@surriel.com (Rik van Riel)]

On Wed, 2017-05-31 at 21:37 +0800, Yubin Ruan wrote:
> I notice that there is a?
> ????
> 	unsigned long		i_ino;
> 
> in definition of `struct inode' [1], which is the virtual filesystem
> inode.
> Does that mean "inode number" and is it used for indexing in the
> system-wide
> inode table??
> 
> If that is the case, would that limit the number of open file in
> Linux?

Those numbers are unrelated.

The i_ino number is the inode number within each
filesystem, and different filesystems can have
inodes with the same inode numbers.

File descriptors (open files) point to a struct inode
somewhere in memory. The same file can be opened many
times (all programs opening libc.so). Many files will
not be opened by any program at all.

-- 
All Rights Reversed.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 473 bytes
Desc: This is a digitally signed message part
Url : http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20170531/e88422ec/attachment.bin