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The use of umode_t instead of devfs-specific char vs block #defines
in Adam's mini-devfs patch makes sense independant of whether his patch
should get merged. While reviewing his changes I also notices that
most of the number allocation functionality in devfs has no business
beeing exported. In addition I cleaned up devfs_alloc_devnum/
devfs_dealloc_devnum a bit.
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As already state in the thread about Adam's devfs reimplementation there
is much devfs functionality that is unused or only used by the
arch/ia64/sn/ code that currently doesn't even compile in 2.5 and that
will get it's own filesystem that fits the needs better when SGI moves
to 2.6.
(the first hunk is the only exception to the above rule, but it's just
a debug printk :))
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not used anymore
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major/minor replaced with a single field (dev_t) in devfs_entry
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"fcb" killed; stuff that used to be handled by it (block/char/regular)
moved into the same union where the rest of cases are handled.
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* DEVFS_FL_AOPEN_NOTIFY removed (b0rken, used only by vt on the kernel
side, unus{ed,able} on the userland side
* DEVFS_FL_HIDE removed (unused)
* ->lock, ->open and ->aopen_notify removed (not used anymore)
* code slightly cleaned up
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* devfs_get_handle() lost 3rd, 4th and 5th arguments (3rd and 4th are
always 0, 5th is ignored in that case)
* _devfs_find_by_dev() removed
* _devfs_find_entry() lost 3rd, 4th and 5th arguments
* devfs_find_and_unregister() removed
* devfs_get_maj_min() removed
* IS_DEVFS_INODE() removed
* DEVFS_MINOR() removed
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devfs_auto_unregister() is not used anymore.
devfs_get_unregister_slave() never had been used.
devfs_entry->slave is always NULL now.
all of the above removed.
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All callers of devfs_find_and_unregister() pass 0 in 6th argument. All
uses of that function either pass 0 in 3rd and 4th argument (in which
case the 5th is ignored) or pass the existing pathname in the 2nd (in
which case 3rd, 4th and 5th are ignored). In all cases the first
argument can be trivially made NULL.
devfs_find_and_unregister() is left as-is. All existing callers
converted to new helper - devfs_remove(pathname). Said beast does
equivalent of devfs_find_and_unregister(NULL, pathname, 0, 0, 0, 0);
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devfs_register_tape() returns the number it had assigned to tape.
new helper: devfs_unregister_tape(number) - removes symlink created by
devfs_register_tape()
devfs_register_tape() doesn't use devfs_auto_unregister() anymore.
devfs_register_tape() gets devfs entry of directory, instead of that of
a random file in that directory.
users updated
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Exported devfs_only()
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devfs_only() call
This now explains what is really going on much better than before.
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Use register_blkdev and unregister_blkdev as before, and everything will work just fine.
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Use register_chrdev and unregister_chrdev as before, and everything will work.
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Switched from devfs_find_handle() to devfs_get_handle()
Many files:
Switched from devfs_find_handle() to devfs_find_and_unregister()
base.c:
Created <devfs_find_and_unregister>.
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- Documentation updates
- BKL removal (devfs doesn't need the BKL)
- Changed <devfs_rmdir> to allow later additions if not yet empty
- Added calls to <devfs_register_partitions> in drivers/block/blkpc.c
<add_partition> and <del_partition>
- Bug fixes in unique number and devnum allocators.
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- Christoph Hellwig: scsi_register_module cleanup
- Mikael Pettersson: apic.c LVTERR fixes
- Russell King: ARM update (including bio update for icside)
- Jens Axboe: more bio updates
- Al Viro: make ready to switch bread away from kdev_t..
- Davide Libenzi: scheduler cleanups
- Anders Gustafsson: LVM fixes for bio
- Richard Gooch: devfs update
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- Al Viro: task-private namespaces, more cleanups
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- Jeff Garzik: no longer support old cards in tulip driver
(see separate driver for old tulip chips)
- Pat Mochel: driverfs/device model documentation
- Ballabio Dario: update eata driver to new IO locking
- Ingo Molnar: raid resync with new bio structures (much more efficient)
and mempool_resize()
- Jens Axboe: bio queue locking
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- Greg KH: USB update
- Richard Gooch: refcounting for devfs
- Jens Axboe: start of new block IO layer
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- Richard Gooch: devfs update
- Andrea Arcangeli: clean up/fix ramdisk handling now that it's in page cache
- Al Viro: follow up the above with initrd cleanups
- Keith Owens: get rid of drivers/scsi/53c700-mem.c file
- Trond Myklebust: RPC over TCP race fix
- Greg KH: USB update (ohci understands USB_ZERO_PACKET)
- me: clean up reference bit handling, fix silly GFP_ATOMIC allocation bug
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- Andreas Dilger: various ext2 cleanups
- Richard Gooch: devfs update
- Johannes Erdfelt: USB updates
- Alan Cox: merges
- David Miller: fix SMP pktsched bootup deadlock (CONFIG_NET_SCHED)
- Roman Zippel: AFFS update
- Anton Altaparmakov: NTFS update
- me: fix races in vfork() (semaphores are not good completion handlers)
- Jeff Garzik: net driver updates, sysvfs update
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- remember to increment the version number
- Chris Mason: reiserfs mark_journal_new and bh leak fix
- Richard Gooch: devfs update
- Alexander Viro: further FS cleanup (superblock list)
- David Woodhouse: MTD update
- Kai Germaschewski: ISDN update (stanford checker fixes etc)
- Rich Baum: gcc-3.0 warning fixes
- Jeff Garzik: network driver updates
- Geert Uytterhoeven: m68k fbdev logo merge glitch fix
- Andrea Arcangeli: fix signal return path
- David Miller: Sparc updates
- Johannes Erdfelt: USB update
- Carsten Otte, Andries Brouwer: don't clear blk_size unconditionally
on partition check
- Martin Frey: alpha Sable irq fix
- Paul Mackerras: PPC softirq update
- Patrick Mochel: PCI power management infrastructure
- Robert Siemer: miroSOUND driver update
- Neil Brown: knfsd updates, including ability to export ReiserFS filesystems
- Trond Myklebust: NFS readdir fixup, don't update atime on client
- Andrew Morton: truncate_inode_pages speedup
- Paul Menage: make inode quota count all inodes..
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- David Miller: sparc rw semaphores moved over
- Alan Cox: yet more resyncs
- NIIBE Yutaka: Super-H driver update
- David Howells: more rw-sem cleanups, updates
- USB updates
- Al Viro: filesystem init cleanup
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