linux.git/fs/sysfs/dir.c, branch v2.6.18

[PATCH] core: use list_move()

2006-06-26T16:58:17+00:00

This patch converts the combination of list_del(A) and list_add(A, B) to
list_move(A, B).

Cc: Greg Kroah-Hartman 
Cc: Ram Pai 
Signed-off-by: Akinobu Mita 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] sysfs: Allow sysfs attribute files to be pollable

2006-04-14T18:41:24+00:00

It works like this:
  Open the file
  Read all the contents.
  Call poll requesting POLLERR or POLLPRI (so select/exceptfds works)
  When poll returns,
     close the file and go to top of loop.
   or lseek to start of file and go back to the 'read'.

Events are signaled by an object manager calling
   sysfs_notify(kobj, dir, attr);

If the dir is non-NULL, it is used to find a subdirectory which
contains the attribute (presumably created by sysfs_create_group).

This has a cost of one int  per attribute, one wait_queuehead per kobject,
one int per open file.

The name "sysfs_notify" may be confused with the inotify
functionality.  Maybe it would be nice to support inotify for sysfs
attributes as well?

This patch also uses sysfs_notify to allow /sys/block/md*/md/sync_action
to be pollable

Signed-off-by: Neil Brown 
Signed-off-by: Greg Kroah-Hartman

Documentation: fix minor kernel-doc warnings

2006-04-02T11:59:55+00:00

This patch updates the comments to match the actual code.

Signed-off-by: Martin Waitz 
Signed-off-by: Adrian Bunk

[PATCH] Make most file operations structs in fs/ const

2006-03-28T17:16:06+00:00

This is a conversion to make the various file_operations structs in fs/
const.  Basically a regexp job, with a few manual fixups

The goal is both to increase correctness (harder to accidentally write to
shared datastructures) and reducing the false sharing of cachelines with
things that get dirty in .data (while .rodata is nicely read only and thus
cache clean)

Signed-off-by: Arjan van de Ven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] sysfs: don't export dir symbols

2006-03-20T21:42:59+00:00

These functions should only be used by the kobject core, and if any
driver tries to use them, bad things happen.  Unexport them to try to
prevent this from happening.

Signed-off-by: Greg Kroah-Hartman

[PATCH] sysfs: fix problem with duplicate sysfs directories and files

2006-03-20T21:42:59+00:00

The following patch checks for existing sysfs_dirent before
preparing new one while creating sysfs directories and files.

Signed-off-by: Maneesh Soni 
Signed-off-by: Greg Kroah-Hartman

[PATCH] sysfs: sysfs_remove_dir() needs to invalidate the dentry

2006-03-20T21:42:57+00:00

When calling sysfs_remove_dir() don't allow any further sysfs functions
to work for this kobject anymore.  This fixes a nasty USB cdc-acm oops
on disconnect.

Many thanks to Bob Copeland and Paul Fulghum for taking the time to
track this down.

Cc: Bob Copeland 
Cc: Paul Fulghum 
Cc: Maneesh Soni 
Signed-off-by: Greg Kroah-Hartman

[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem

2006-01-09T23:59:24+00:00

This patch converts the inode semaphore to a mutex. I have tested it on
XFS and compiled as much as one can consider on an ia64. Anyway your
luck with it might be different.

Modified-by: Ingo Molnar 

(finished the conversion)

Signed-off-by: Jes Sorensen 
Signed-off-by: Ingo Molnar

[PATCH] sysfs: handle failures in sysfs_make_dirent

2006-01-05T00:18:09+00:00

I noticed that if sysfs_make_dirent fails to allocate the sd, then a
null will be passed to sysfs_put.

Signed-off-by: Steven Rostedt 
Signed-off-by: Greg Kroah-Hartman

[PATCH] remove duplicate get_dentry functions in various places

2005-06-23T16:45:20+00:00

Various filesystem drivers have grown a get_dentry() function that's a
duplicate of lookup_one_len, except that it doesn't take a maximum length
argument and doesn't check for \0 or / in the passed in filename.

Switch all these places to use lookup_one_len.

Signed-off-by: Christoph Hellwig 
Cc: Greg KH 
Cc: Paul Jackson 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds