Eric Wong wrote:
> Jim Meyering <j...@meyering.net> wrote:
>> Eric Wong wrote:
>> > * lib/mountlist.c (ME_DUMMY_0):
>> > additional dummy FS names for Linux systems.
>> > - "devpts" PTY slave filesystem
>> > - "fusectl" control filesystem for FUSE
>> > - "mqueue" enumerates POSIX message queues
>> > - "rpc_pipefs" kernel <-> userspace bridge for NFS
>> > - "sysfs" is for exporting kernel objects
>> > - "devfs" device filesystem for Linux 2.4 and FreeBSD
>> > There are likely more dummy FSes I am not aware of.
>>
>> Thanks. I'll look at this Sat or Sunday.
>> What's the motivation? Have df hide those entries?
>
> It just seems right to mark those as dummy since they
> aren't used for normal file storage.
>
> It allows cmogstored[1] to skip some entries and avoid extra
> stat() and a tiny amount of memory allocation. No big deal
> with or without it.
>
> [1] http://bogomips.org/cmogstored/README
Thanks. I've tweaked the log and added a matching ChangeLog entry.
Testing via df on my F18 laptop, diff -u <(src/df-prev) <(src/df)
shows no difference. What do people think of this entry from
that F18 system?
devtmpfs 1538304 0 1538304 0% /dev
If we're omitting "devfs", then should "devtmpfs" also be omitted?
>From a715f6c8d7752364c9c1fc5c02109e4dac9c60db Mon Sep 17 00:00:00 2001
From: Eric Wong <normalper...@yhbt.net>
Date: Fri, 7 Dec 2012 23:14:34 +0000
Subject: [PATCH] mountlist: recognize more "dummy" file systems
* lib/mountlist.c (ME_DUMMY_0):
Add these dummy FS names to the list:
- "devpts" PTY slave filesystem
- "fusectl" control filesystem for FUSE
- "mqueue" enumerates POSIX message queues
- "rpc_pipefs" kernel <-> userspace bridge for NFS
- "sysfs" is for exporting kernel objects
- "devfs" device filesystem for Linux 2.4 and FreeBSD
---
ChangeLog | 12 ++++++++++++
lib/mountlist.c | 8 ++++++++
2 files changed, 20 insertions(+)
diff --git a/ChangeLog b/ChangeLog
index a49fc07..6637b0c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,15 @@
+2012-12-07 Eric Wong <normalper...@yhbt.net>
+
+ mountlist: recognize more "dummy" file systems
+ * lib/mountlist.c (ME_DUMMY_0):
+ Add these dummy FS names to the list:
+ - "devpts" PTY slave filesystem
+ - "fusectl" control filesystem for FUSE
+ - "mqueue" enumerates POSIX message queues
+ - "rpc_pipefs" kernel <-> userspace bridge for NFS
+ - "sysfs" is for exporting kernel objects
+ - "devfs" device filesystem for Linux 2.4 and FreeBSD
+
2012-12-10 Eli Zaretskii <e...@gnu.org>
canonicalize, canonicalize-lgpl: Microsoft Windows prefix fixes
diff --git a/lib/mountlist.c b/lib/mountlist.c
index d0fe1b2..359aa10 100644
--- a/lib/mountlist.c
+++ b/lib/mountlist.c
@@ -153,6 +153,14 @@
(strcmp (Fs_type, "autofs") == 0 \
|| strcmp (Fs_type, "proc") == 0 \
|| strcmp (Fs_type, "subfs") == 0 \
+ /* for Linux 2.6/3.x */ \
+ || strcmp (Fs_type, "devpts") == 0 \
+ || strcmp (Fs_type, "fusectl") == 0 \
+ || strcmp (Fs_type, "mqueue") == 0 \
+ || strcmp (Fs_type, "rpc_pipefs") == 0 \
+ || strcmp (Fs_type, "sysfs") == 0 \
+ /* FreeBSD, Linux 2.4 */ \
+ || strcmp (Fs_type, "devfs") == 0 \
/* for NetBSD 3.0 */ \
|| strcmp (Fs_type, "kernfs") == 0 \
/* for Irix 6.5 */ \
--
1.8.0.1.352.gfb4c622
