提交 bcadbbd4 编写于 作者: X Xiaotian Feng 提交者: Linus Torvalds

Documentation: update stale definition of file-nr in fs.txt

In "documentation: update Documentation/filesystem/proc.txt and
Documentation/sysctls" (commit 760df93e) we merged /proc/sys/fs
documentation in Documentation/sysctl/fs.txt and
Documentation/filesystem/proc.txt, but stale file-nr definition
remained.

This patch adds back the right fs-nr definition for 2.6 kernel.

Signed-off-by: Xiaotian Feng<dfeng@redhat.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 16c01b20
......@@ -96,13 +96,16 @@ handles that the Linux kernel will allocate. When you get lots
of error messages about running out of file handles, you might
want to increase this limit.
The three values in file-nr denote the number of allocated
file handles, the number of unused file handles and the maximum
number of file handles. When the allocated file handles come
close to the maximum, but the number of unused file handles is
significantly greater than 0, you've encountered a peak in your
usage of file handles and you don't need to increase the maximum.
Historically, the three values in file-nr denoted the number of
allocated file handles, the number of allocated but unused file
handles, and the maximum number of file handles. Linux 2.6 always
reports 0 as the number of free file handles -- this is not an
error, it just means that the number of allocated file handles
exactly matches the number of used file handles.
Attempts to allocate more file descriptors than file-max are
reported with printk, look for "VFS: file-max limit <number>
reached".
==============================================================
nr_open:
......
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