lwn.git/include/linux/sysctl.h, branch v2.6.21-rc3

[PATCH] sysctl: remove the proc_dir_entry member for the sysctl tables

2007-02-14T16:10:00+00:00

It isn't needed anymore, all of the users are gone, and all of the ctl_table initializers have been converted to use explicit names of the fields they are initializing. [akpm@osdl.org: NTFS fix] Signed-off-by: Eric W. Biederman Acked-by: Stephen Smalley Cc: James Morris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] sysctl: add a parent entry to ctl_table and set the parent entry

2007-02-14T16:10:00+00:00

Add a parent entry into the ctl_table so you can walk the list of parents and find the entire path to a ctl_table entry. Signed-off-by: Eric W. Biederman Cc: Stephen Smalley Cc: James Morris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] sysctl: reimplement the sysctl proc support

2007-02-14T16:10:00+00:00

With this change the sysctl inodes can be cached and nothing needs to be done when removing a sysctl table. For a cost of 2K code we will save about 4K of static tables (when we remove de from ctl_table) and 70K in proc_dir_entries that we will not allocate, or about half that on a 32bit arch. The speed feels about the same, even though we can now cache the sysctl dentries :( We get the core advantage that we don't need to have a 1 to 1 mapping between ctl table entries and proc files. Making it possible to have /proc/sys vary depending on the namespace you are in. The currently merged namespaces don't have an issue here but the network namespace under /proc/sys/net needs to have different directories depending on which network adapters are visible. By simply being a cache different directories being visible depending on who you are is trivial to implement. [akpm@osdl.org: fix uninitialised var] [akpm@osdl.org: fix ARM build] [bunk@stusta.de: make things static] Signed-off-by: Eric W. Biederman Cc: Russell King Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] sysctl: allow sysctl_perm to be called from outside of sysctl.c

2007-02-14T16:09:59+00:00

Signed-off-by: Eric W. Biederman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] sysctl: factor out sysctl_head_next from do_sysctl

2007-02-14T16:09:59+00:00

The current logic to walk through the list of sysctl table headers is slightly painful and implement in a way it cannot be used by code outside sysctl.c I am in the process of implementing a version of the sysctl proc support that instead of using the proc generic non-caching monster, just uses the existing sysctl data structure as backing store for building the dcache entries and for doing directory reads. To use the existing data structures however I need a way to get at them. [akpm@osdl.org: warning fix] Signed-off-by: Eric W. Biederman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] sysctl: remove insert_at_head from register_sysctl

2007-02-14T16:09:59+00:00

The semantic effect of insert_at_head is that it would allow new registered sysctl entries to override existing sysctl entries of the same name. Which is pain for caching and the proc interface never implemented. I have done an audit and discovered that none of the current users of register_sysctl care as (excpet for directories) they do not register duplicate sysctl entries. So this patch simply removes the support for overriding existing entries in the sys_sysctl interface since no one uses it or cares and it makes future enhancments harder. Signed-off-by: Eric W. Biederman Acked-by: Ralf Baechle Acked-by: Martin Schwidefsky Cc: Russell King Cc: David Howells Cc: "Luck, Tony" Cc: Ralf Baechle Cc: Paul Mackerras Cc: Martin Schwidefsky Cc: Andi Kleen Cc: Jens Axboe Cc: Corey Minyard Cc: Neil Brown Cc: "John W. Linville" Cc: James Bottomley Cc: Jan Kara Cc: Trond Myklebust Cc: Mark Fasheh Cc: David Chinner Cc: "David S. Miller" Cc: Patrick McHardy Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] sysctl: remove support for CTL_ANY

2007-02-14T16:09:59+00:00

There are currently no users in the kernel for CTL_ANY and it only has effect on the binary interface which is practically unused. So this complicates sysctl lookups for no good reason so just remove it. Signed-off-by: Eric W. Biederman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] sysctl: register the ocfs2 sysctl numbers

2007-02-14T16:09:58+00:00

ocfs2 was did not have the binary number it uses under CTL_FS registered in sysctl.h. Register it to avoid future conflicts, and change the name of the definition to be in line with the rest of the sysctl numbers. Signed-off-by: Eric W. Biederman Acked-by: Mark Fasheh Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] sysctl: register the sysctl number used by the arlan driver

2007-02-14T16:09:57+00:00

Signed-off-by: Eric W. Biederman Cc: "John W. Linville" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] sysctl: s390: move sysctl definitions to sysctl.h

2007-02-14T16:09:57+00:00

We need to have the the definition of all top level sysctl directories registers in sysctl.h so we don't conflict by accident and cause abi problems. Signed-off-by: Eric W. Biederman Acked-by: Martin Schwidefsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds