diff options
| author | Andrew Morton <akpm@osdl.org> | 2004-02-18 05:00:18 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-02-18 05:00:18 -0800 |
| commit | 98fabcaab54ecd736cfc0f290e9e05cffb0294a0 (patch) | |
| tree | a05ebdf248b04581271c1ed998be38a69c33a710 /Documentation | |
| parent | 9c27c441c924a4220b7578ff21f8eec29d3eb24e (diff) | |
[PATCH] aio sysctl parms
From: Janet Morgan <janetmor@us.ibm.com>
It looks like aio_nr and aio_max_nr were intended to be sysctl parameters.
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/filesystems/proc.txt | 9 | ||||
| -rw-r--r-- | Documentation/sysctl/fs.txt | 10 |
2 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index df6a09bb743f..22fd3adcc96e 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -900,6 +900,15 @@ super-nr shows the number of currently allocated ones. Every mounted file system needs a super block, so if you plan to mount lots of file systems, you may want to increase these numbers. +aio-nr and aio-max-nr +--------------------- + +aio-nr is the running total of the number of events specified on the +io_setup system call for all currently active aio contexts. If aio-nr +reaches aio-max-nr then io_setup will fail with EAGAIN. Note that +raising aio-max-nr does not result in the pre-allocation or re-sizing +of any kernel data structures. + 2.2 /proc/sys/fs/binfmt_misc - Miscellaneous binary formats ----------------------------------------------------------- diff --git a/Documentation/sysctl/fs.txt b/Documentation/sysctl/fs.txt index fbbe3cafffa9..0b62c62142cf 100644 --- a/Documentation/sysctl/fs.txt +++ b/Documentation/sysctl/fs.txt @@ -138,3 +138,13 @@ thus the maximum number of mounted filesystems the kernel can have. You only need to increase super-max if you need to mount more filesystems than the current value in super-max allows you to. + +============================================================== + +aio-nr & aio-max-nr: + +aio-nr shows the current system-wide number of asynchronous io +requests. aio-max-nr allows you to change the maximum value +aio-nr can grow to. + +============================================================== |