- 12 Aug, 2002 11 commits
-
-
Anton Blanchard authored
-
bk://ppc.bkbits.net/for-linus-ppc64Anton Blanchard authored
into samba.org:/scratch/anton/linux-2.5_ppc64
-
Anton Blanchard authored
-
Anton Blanchard authored
-
Anton Blanchard authored
-
Anton Blanchard authored
-
Anton Blanchard authored
-
Anton Blanchard authored
-
bk://ppc.bkbits.net/for-linus-ppc64Anton Blanchard authored
into samba.org:/scratch/anton/linux-2.5_ppc64
-
Anton Blanchard authored
into samba.org:/scratch/anton/linux-2.5_ppc64
-
Anton Blanchard authored
into samba.org:/scratch/anton/linux-2.5_work
-
- 10 Aug, 2002 29 commits
-
-
Linus Torvalds authored
-
Andrew Morton authored
Well the optimum solution there would be to create and use `inc_preempt_count_non_preempt()'. I don't see any way of embedding this in kmap_atomic() or copy_to_user_atomic() without loss of flexibility or incurring a double-inc somewhere.
-
bk://linuxusb.bkbits.net/pci_hp-2.5Linus Torvalds authored
into home.transmeta.com:/home/torvalds/v2.5/linux
-
bk://ppc.bkbits.net/for-linus-ppcLinus Torvalds authored
into home.transmeta.com:/home/torvalds/v2.5/linux
-
Andrew Morton authored
Fix a race between set_page_dirty() and truncate. The page could have been removed from the mapping while this CPU is spinning on the lock. __free_pages_ok() will go BUG. This has not been observed in practice - most callers of set_page_dirty() hold the page lock which gives exclusion from truncate. But zap_pte_range() does not. A fix for this has been sent to Marcelo also.
-
Andrew Morton authored
Some direct IO fixes from Badari Pulavarty. - off-by-one in the bounds checking in blkdev_get_blocks(). - When adding more blocks into a bio_vec, account for the current offset into that bio_vec. - Fix a total ballsup in the code which calculates the total number of pages which are about to be put under IO.
-
Andrew Morton authored
Forward port of get_user_pages() change from 2.4. - If the vma is marked as VM_IO area then fail the map. This prevents kernel deadlocks which occur when applications which have frame buffers mapped try to dump core. Also prevents a kernel oops when a debugger is attached to a process which has an IO mmap. - Check that the mapped page is inside mem_map[] (pfn_valid). - inline follow_page() and remove the preempt_disable()s. It has only a single callsite and is called under spinloclk.
-
Andrew Morton authored
The patch from Stephen Tweedie allows users to modify the journal commit interval for the ext3 filesystem. The commit interval is normally five seconds. For portable computers with spun-down drives it is advantageous to be able to increase the commit interval. There may also be advantages in decreasing the commit interval for specialised applications such as heavily-loaded NFS servers which are using synchronous exports. The laptop users will also need to increase the pdflush periodic writeback interval (/proc/sys/vm/dirty_writeback_centisecs), because the `kupdate' activity also forces a commit. To specify the commit interval, use mount -o commit=30 /dev/hda1 /mnt/whatever or mount -o remount,commit=30 /dev/hda1 The commit interval is specified in units of seconds.
-
Andrew Morton authored
This is the first of three patches which reduce the amount of kmap/kunmap traffic on highmem machines. The workload which was tested was RAM-only dbench. This is dominated by copy_*_user() costs. The three patches speed up my 4xPIII by 3% The three patches speed up a 16P NUMA-Q by 100 to 150% The first two patches (copy_strings and pagecache reads) speed up an 8-way by 15%. I expect that all three patches will speed up the 8-way by 40%. Some of the benefit is from reduced pressure on kmap_lock. Most of it is from reducing the number of global TLB invalidations. This patch fixes up copy_strings(). copy_strings does a huge amount of kmapping. Martin Bligh has noted that across a kernel compile this function is the second or third largest user of kmaps in the kernel. The fix is pretty simple: just hang onto the previous kmap as we we go around the loop. It reduces the number of kmappings from copy_strings by a factor of 30.
-
Andrew Morton authored
Patch from Zwane which fixes a transceiver problem on his 3c905B. Apparently the 905B's MII status register is saying that it doesn't need preamble, but the datasheet says that it does. So add a 905B override for that in the device table. This could break other 3c905B's. I don't know. There's only one way to find out.
-
Russell King authored
This patch has been verified to apply cleanly to 2.5.30 This patch fixes a build warning in smp.h. register_cpu_notifier uses struct notifier_block in its argument list. Unfortunately, there are places where smp.h is included before the definition of this structure.
-
Pavel Machek authored
pci driver's resume must not be called during RESUME_POWER_ON because interrupts are still off and i8259A is not initialized [OHCI kills machine in such case, cardbus probably too. PCI drivers just assume initialized interrupts.] Second hunk fixes device_resume calls to be okay according to documentation.
-
David Howells authored
The prototype name is wrong, not the name called by the actual implementation. Noticed by David Miller.
-
Jens Axboe authored
Forgot to export it to modules :/
-
Paul Menage authored
-
Linus Torvalds authored
-
Alexander Viro authored
Small, but tricky: fix for check_disk_change() deadlocks. What we do is a) opening block device shifted from check_partition() to grok_partitions(); check_partitions() takes opened struct block_device. b) all callers of check_disk_change() fall in two groups - ones that are called only from some ->open() and ones that are _never_ called from ->open(). There is no middle ground. We split the thing in two functions - check_disk_change() for the first class and full_check_.... for the second. The former (ones inside ->open()) doesn't touch partition tables but marks the bdev as "had been invalidated". In the end of do_open() we check if bdev is marked and call wipe_partitions()/check_partition() if it is - at that point bdev is fully set up and ready. c) ->bd_part_sem kludge is gone - we use ->bd_sem instead. That is, do_open() on a partition grabs ->bd_sem on entire disk and picks partition data while under it; do_open() on entire disk rereads partition if needed before dropping ->bd_sem (right before dropping it); BLKRRPART does trylock on ->bd_sem and then checks ->bd_part_count - same logics as before, except that we use ->bd_sem instead of ->bd_part_sem. That kills recursive open(), gives us the same exclusion rules as we had and makes sure that actual IO (including rereading partition tables) is done only when we are ready to do it. It actually sounds a lot nastier than it is. do_open() is a one sick puppy right now, but we have everything in one place and _out_ of drivers (and 20-odd equally sick puppies are gone from them, along with about the same number of races). Now we are almost ready to clean it up for good - all that remains to do before that is to get the rest of drivers (cciss, DAC960, i2o and a couple of ancients - xd and acsi) using per-disk gendisks. Then most of that crap will disappear. BTW, the only generic ioctl remaining in the drivers is HDIO_GETGEO - a lot of foo_ioctl() starts with if (cmd != HDIO_GETGEO) return -EINVAL; ;-)
-
Alexander Viro authored
ps2esdi.c switched to per-disk gendisks
-
Alexander Viro authored
cpqarray.c switched to per-disk gendisks
-
Alexander Viro authored
Big One. Flushing/rereading partition tables is taken from ->revalidate() for partitioned devices; now it's done in the caller (check_disk_change()). BLKRRPART handling also moved out of drivers - they are still allowed to override it (DAC960 and i2o are the only remaining ones), but common case is handled in fs/block_dev.c. Note: we are still only shifting stuff - bd_sem deadlocks in check_disk_change() are still there. However, now we have all relevant code outside of drivers and that will allow to fix the thing (see next patches).
-
Alexander Viro authored
->attach() for ide subdrivers explicitly calls register_disk() instead of ata_revalidate() now; revalidate_drives() is gone - it's not needed anymore (we _know_ that we'll read partition table as soon as driver claims the drive; no need to mess with bogus rereading).
-
Alexander Viro authored
->major_name for per-disk gendisks set to full name - i.e. IDE gendisks have "hda", "hdb", etc. instead of "hd". As the result, we kill a lot of crap in check.c::disk_name(). In particular, now we can afford ->minor_shift set to 0 for ide-cd (disk_name() was the only obstacle)
-
Alexander Viro authored
check_disk_change() converted to passing struct block_device. Old variant is still needed for a couple of places; wrapper is provided (__check_disk_change(kdev)). do_open() logics with setting ->bd_op sanitized - now we do that before calling ->open().
-
Alexander Viro authored
fix for embarrassing braino in /proc/partitions - size in kilobytes is _half_ the size in secotrs, not twice that size...
-
Alexander Viro authored
Present both in 2.4 and 2.5 ;-/
-
Christoph Hellwig authored
- inline grab_cache_page() in pagemap.h, it's just a simple wrapper around find_or_create_page() - rename (__)remove_inode_page to (__)remove_from_page_cache and move them from mm.h and swap.h to pagemap.h because they reverse add_to_page_cache and that's where they belong.
-
Ivan Kokshaysky authored
- __down_[read,write]_trylock, __downgrade_write implemented; - __builtin_expect replaced with unlikely().
-
Ivan Kokshaysky authored
Set of small fixes: - pcibios_init() must be int; - fls() - ctlz on ev67, generic on others. This was required for something several kernel releases back, now it seems to be unused. Anyway, it shouldn't hurt, so included here. - missing #includes, missing #if RTC_IRQ in drivers/char/rtc.c; - define USER_HZ; From Jeff Wiedemeier: - rename alpha-specific config section 'General setup' to 'System setup' to avoid confusion with generic 'General setup'; - fix the 'bootpfile' build.
-
Ivan Kokshaysky authored
- osf_getrusage() updated for new utime/stime fields of the task_struct; - compatibility wrappers for OSF/1 v4 readv/writev syscalls: forward port from 2.4.19.
-