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- 29 Oct, 2002 40 commits
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Andrew Morton authored
Patch from Hugh Dickins The last set of tmpfs patches left shmem_getpage with an inadequate next_index test to guard against races with truncation. Now remove that check and settle the issue with checks against i_size within shmem_swp_alloc, which needs to know whether reading or writing.
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Andrew Morton authored
Patch from Hugh Dickins shmem_getpage does need to lock its page (to secure it against shmem_writepage), but it's easier for its callers if it unlocks before returning. The only caller who appeared to be using the page lock was shmem_file_write, but it wasn't actually protecting against anything - i_sem prevents concurrent writes and truncates, and do_shmem_file_read was dropping the lock before copying anyway.
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Alexander Viro authored
- name_to_kdev_t() turned into name_to_dev_t(), callers updated. - table of names is gone, we use driverfs instead. - root name is converted to dev_t only at prepare_namespace() time - we use to do it in setup and we need it after driver initialization. So setup only stores the root name and leaves the work to prepare_namespace(). - disk names for rd and cm206 changed to match the old behaviour of root= parser: ramdisks have ram<n> in ->disk_name now (instead of rd<n>) and cm206 - cm206cd (instead of cm206).
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Pavel Machek authored
This uses better constraints that do not go through the register unneccessarily.
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Pavel Machek authored
Do not oops when no swapfile is available and make it compile on DISCONTIGMEM machines.
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Brian Gerst authored
This patch does a few cleanups/fixes with __verify_write: - Only compile it when needed. - Move test for KERNEL_DS out of line. - The mmap semaphore is needed to access the vma list. - Use fixmap for the WP test. - Removes an obsolete comment in fixmap.h
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Brian Gerst authored
It was copied from i386 and is unused.
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Christoph Hellwig authored
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Brian Gerst authored
This fixes PTRACE_GETFPREGS to initilize the fpu struct correctly on cpus with fxsr, as well as removing redundant code.
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Alexander Viro authored
- fixes an idiocy with floppy_find() et.al. - they forgot to set *part to 0. As the result, open() on anything other than fd0 had lead to interesting effects... - fixes off-by-1 in set_disk_ro().
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Linus Torvalds authored
implementation. The optimized versions only work for large areas, make sure we don't use them for anything else.
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Linus Torvalds authored
configuration system, and instead just cleanly show the dependency.
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Christoph Hellwig authored
The ifdef <actual cpu selection> is very bad style, we usually introduce feature CONFIG_ options in config.in instead.
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bk://linuxusb.bkbits.net/pci_hp-2.5Linus Torvalds authored
into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux
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bk://linuxusb.bkbits.net/pnp-2.5Linus Torvalds authored
into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux
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Greg Kroah-Hartman authored
into kroah.com:/home/greg/linux/BK/pci_hp-2.5
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Linus Torvalds authored
into home.transmeta.com:/home/torvalds/v2.5/linux
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Hirofumi Ogawa authored
- cleanup - remove unneeded mark_inode_dirty() in fat_extend_dir()
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Hirofumi Ogawa authored
This removes fat_cvf stuff, and adds printk() level. As far as I know, all the challengers gave up porting of fat_cvf. (This patch from Christoph Hellwig)
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Hirofumi Ogawa authored
This removes the conv option. This option does nothing, now. (This patch from René Scharfe)
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Greg Kroah-Hartman authored
into kroah.com:/home/greg/linux/BK/pnp-2.5
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Robert Love authored
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http://gkernel.bkbits.net/misc-2.5Linus Torvalds authored
into home.transmeta.com:/home/torvalds/v2.5/linux
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http://gkernel.bkbits.net/net-drivers-2.5Linus Torvalds authored
into home.transmeta.com:/home/torvalds/v2.5/linux
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http://jfs.bkbits.net/linux-2.5Linus Torvalds authored
into home.transmeta.com:/home/torvalds/v2.5/linux
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Linus Torvalds authored
into home.transmeta.com:/home/torvalds/v2.5/linux
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Linus Torvalds authored
into home.transmeta.com:/home/torvalds/v2.5/linux
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Linus Torvalds authored
into home.transmeta.com:/home/torvalds/v2.5/linux
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http://linux-sound.bkbits.net/linux-soundLinus Torvalds authored
into home.transmeta.com:/home/torvalds/v2.5/linux
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Jaroslav Kysela authored
- ICE1712 - fixed Midiman M-audio Delta1010LT code - fixed typos in comments (es1938, intel8x0) - fixed quirks for Edirol UA-20 and UA-700 (USB driver)
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http://linux.bkbits.net/linux-2.5Jaroslav Kysela authored
into suse.cz:/home/perex/bk/linux-sound/linux-sound
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Jens Axboe authored
Right now, various fields in struct request are just scattered throughout the struct. This makes for bad cache behaviour. This patch puts commonly referenced together fiels in the same cache lines and also removes the prefetches in deadline_merge(). The latter was actually hurting performance here now that struct request is sanely laid out wrt cache. This is worth ~40% less deadline_merge() runtime during disk intensive tests!
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Jens Axboe authored
Move the export to block/scsi_ioctl.c as well.
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Jens Axboe authored
block/scsi_ioctl.c uses scsi_command_size[] to get from opcode to length of cdb, but that is only available with SCSI enabled. Move to block/scsi_ioctl.c from scsi/scsi.c.
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Jens Axboe authored
When someone deleted scsi_merge, they also killed the fixes I sent to you earlier...
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Andrew Morton authored
- add locking comments to do_mmap_pgoff(), filemap.c - used unsigned long for cpu flags in aio.c (Andi) - An x86-64 typo fix from Andi. - Fix a tpyo - Fix an unused var warning in the stack overflow check code - mptlan compile fix (Rasmus Andersen) - Update misleading comment in ia32 highmem.c - "attempting to mount an ext3 fs on a stopped md/raid1 array caused a divide by 0 error in ext3_fill_super. Fix duplicates check already in ext2." - Angus Sawyer <angus.sawyer@dsl.pipex.com> - Someone changed the return type of inl() again! Fix up compiler warnings in 3c59x.c again.
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Andrew Morton authored
There's no need to take down pagecache after performing direct-IO reads from a file or a blockdevice. And when using direct access to a blockdev which has a filesystem mounted it creates unnecessary disturbance of filesystem activity.
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Andrew Morton authored
From Ingo - performance optimization: do not kill threads in the same thread group as the OOM-ing thread. (it's still necessery to scan over every thread though, as it's possible to have CLONE_VM threads in a different thread group - we do not want those to escape the OOM-kill.) - to not let newly created child threads slip out of the group-kill. Note that the 2.4 kernel's OOM handler has the same problem, and it could be the reason why forkbombs occasionally slip out of the OOM kill.
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Andrew Morton authored
shrink_slab() wants to calculate nr_scanned_pages * seeks_per_object * entries_in_slab / nr_lru_pages entries_in_slab and nr_lru_pages can vary a lot. There is a potential for 32-bit overflows. I spent ages trying to avoid corner cases which cause a significant lack of precision while preserving some clarity. Gave up and used do_div(). The code is called rarely - at most once per 128 kbytes of reclaim. The patch adds a tweak to balance_pgdat() to reduce the call rate to shrink_slab() in the case where the zone is just a little bit below pages_high. Also increase SHRINK_BATCH. The things we're shrinking are typically a few hundred bytes, and a batchcount of 128 gives us a minimum of ten pages or so per shrinking callout.
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Andrew Morton authored
There's more work to do on these, for well-aligned copies. Arjan has some stuff for that. First step on that path is to clean the code up, get it uninlined and have a framework for making per-CPU-type decisions.
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