- 15 Feb, 2003 37 commits
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Alan Cox authored
Fixes a request region breakage Fixes a size request error Handles a new card type
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Steven Cole authored
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Alan Cox authored
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Alan Cox authored
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Alan Cox authored
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Alan Cox authored
No lilo since about 1997 has stomped the EBDA
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Alan Cox authored
Also recognize the NEC98 busses
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Alan Cox authored
Also suggest bugzilla.kernel.org now not the mailing list
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Alan Cox authored
This is nice and clean (your tree already knows the idents)
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Alan Cox authored
The big thing here is actually turning 'Your bios sucks' into 'Your bios sucks, but we fixed it and life is good, don't panic' Which with a vendor hat on is important. Its currently hard to tell whether some Linux errors are things to worry about or merely spanking the manufacturer. I'd urge people writing error messages to think about that btw - does it tell the user if the problem is fixed ?
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Ben Collins authored
- Converts Video1394 to PCI dma. - Converts ioctl's to standard interface. - Various minor fixes - Merges from 2.5.x tree
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Andrew Morton authored
Patch from Szabolcs Berecz <szabi@mplayerhq.hu> With the following patch maxindex is taken from an array instead of recalculating it all the time.
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Andrew Morton authored
Patch from John Kim <john@larvalstage.com> This fixes compile breakage due to recent changes to scsi.h
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Andrew Morton authored
Patch from: Valdis.Kletnieks@vt.edu This is a patch to clean things up so compiling with -Wundef becomes feasible (This patch cuts the number of warnings with 'make allyesconfig' drop from around 10,000 to several hundred). It was originally inspired by the discussion of things that include linux/version.h but don't use the contents - after doing this, I was able to find that there *WAS* at least one place where version.h was missing (see following patch).
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Andrew Morton authored
When EXT3_DEBUG is turned on (by editing the header file) there is one compile failure and a few warnings. Fix that up.
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Andrew Morton authored
driect-io will currently return EINVAL when the application tries to read the final bit of the file at EOF. (assuming the file's length is not a multiple of the filesystem blocksize). The 2.4 kernelwill reurn 0 (it won't read it at all). This patch changes the 2.5 kernel to allow that block to be read.
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Andrew Morton authored
If at the end of direct_io_worker, dio->result is non-zero then we unconditionally copy that into the return value, potentially ignoring any I/O errors which were accumulated into local variable `ret'. Only do the assignment if `ret' is zero.
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Andrew Morton authored
Patch from steve cameron <steve.cameron@hp.com> Fix overrun if you have more than 16 attached tape drives + tape changers. Thanks to Mike Anderson for pointing this out.
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Andrew Morton authored
Patch from: steve cameron <steve.cameron@hp.com> Steve sent out a nice series of 11 broken-out patches. I have lumped them all together. - Makes the cciss driver compile in 2.5.60 (from tony@cantech.net.au) - From randy.dunlap@verizon.net, fix memory leaks in cciss driver - Allow cciss driver attached disks other than the first to be accessed. - Zero out cylinders when zeroing out other disk info in cciss driver. - Remove unused variable from cciss_scsi.c - This patch makes scsi commands to tape drives have no timeouts. Previously the timeout was 1000 seconds, too short, and nothing good happens when the timeout expires. Better to have no timeout. e.g. mt -f /dev/st0 erase may take about 2 hours 30 min on AIT 100. - Remove unneeded cciss_scsi init code from cciss driver. - Remove udelay in command polling routine - extend timeout to 20 seconds (need for certain multiport storage box) - Remove unneeded init time code in cciss_scsi.c (thus allowing removal of udelay in command polling code.) - Factor out duplicated read capacity code into common routine in cciss driver. - factor duplicated geometry inquiry code into common routine in cciss driver.
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Andrew Morton authored
blk_congestion_wait() will currently not wait if there are no write requests in flight. Which is a potential problem if all the dirty data is against NFS filesystems. For write(2) traffic against NFS, things work nicely, because writers throttle in nfs_wait_on_requests(). But for MAP_SHARED dirtyings we need to avoid spinning in balance_dirty_pages(). So allow callers to fall through to the explicit sleep in that case. This will also fix a weird lockup which the reiser4 developers report. In that case they have managed to have _all_ inodes against a superblock in locked state, yet there are no write requests in flight. Taking a nap in blk_congestion_wait() in this case will yield the CPU to the threads which are trying to write out pages. Also tune up the sleep durations in various callers - 250 milliseconds seems rather long.
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Andrew Morton authored
Patch from Andreas Gruenbacher <agruen@suse.de> This patch adds trusted extended attributes. Trusted extended attributes are visible and accessible only to processes that have the CAP_SYS_ADMIN capability. Attributes in this class are used to implement mechanisms in user space (i.e., outside the kernel) which keep information in extended attributes to which ordinary processes have no access. HSM is an example.
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Andrew Morton authored
Patch from Andreas Gruenbacher <agruen@suse.de> This adds the XATTR_KERNEL_CONTEXT extended attributes flag. Kernel code may use this flag to override extended attribute permission restrictions that would otherwise be imposed on the calling process.
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Andrew Morton authored
Patch from Andreas Gruenbacher <agruen@suse.de> This adds flags parameters to the getxattr, listxattr, and removexattr inode operations. This is in preparation for the next patch, which allows in-kernel code (i.e., modules) to override extended attribute permission restrictions (which in turn is used by HSM implementations and the like).
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Andrew Morton authored
Patch from Andreas Gruenbacher <agruen@suse.de> This patch fixes a bug in the ext2 and ext3 listxattr operation: Even if an attribute is hidden from the user, the terminating NULL character was included in the listxattr result. After the patch this doesn't happen anymore.
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Andrew Morton authored
from Andreas Gruenbacher
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Andrew Morton authored
Patch from Maneesh Soni <maneesh@in.ibm.com>, Dipankar Sarma <dipankar@in.ibm.com> and probably others. This patch provides dcache_lock free d_lookup() using RCU. Al pointed races with d_move and lockfree d_lookup() while concurrent rename is going on. We tested this with a test doing million renames each in 50 threads on 50 different ramfs filesystems. And simultaneously running millions of "ls". The tests were done on 4-way SMP box. 1. Lookup going to a different bucket as the current dentry is moved to a different bucket due to rename. This is solved by having a list_head pointer in the dentry structure which points to the bucket head it belongs. The bucket pointer is updated when the dentry is added to the hash chain. Lookup checks if the current dentry belongs to a different bucket, the cached lookup is failed and real lookup will be done. This condition occured nearly about 100 times during the heavy_rename test. 2. Lookup has got the dentry it is looking and it is comparing various keys and meanwhile a rename operation moves the dentry. This is solved by using a per dentry counter (d_move_count) which is updated at the end of d_move. Lookup takes a snapshot of the d_move_count before comparing the keys and once the comparision succeeds, it takes the per dentry lock to check the d_move_count again. If move_count differs, then dentry is moved (or renamed) and the lookup is failed. 3. There can be a theoritical race when a dentry keeps coming back to original bucket due to double moves. Due to this lookup may consider that it has never moved and can end up in a infinite loop. This is solved by using a loop_counter which is compared with a approximate maximum number of dentries per bucket. This never got hit during the heavy_rename test. 4. There is one more change regarding the loop termintaion condition in d_lookup, now the next hash pointer is compared with the current dentries bucket pointer (is_bucket()). 5. memcmp() in d_lookup() can go out of bounds if name pointer and length fields are not consistent. For this we used a pointer to qstr to keep length and name pointer in one structre. We also tried solving these by using a rwlock but it could not compete with lockless solution.
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Andrew Morton authored
Patch from Maneesh Soni <maneesh@in.ibm.com> Revert the fast-walk dcache code in preparation for dcache_rcu.
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Andrew Morton authored
Patch from Joakim Tjernlund <joakim.tjernlund@lumentis.se> I did the optimizations in the crc32 patch Brian Murphy submitted a while ago. Now I have cleaned it up a little and made some more optimizations. gcc is quite bad at loop optimizations (at least for PPC) so I have rewritten them to make gcc to generate better code. Even recent gcc's(3.2.x) produces better code. Also reduced the unrolling since it did not make a noticeable difference.
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Andrew Morton authored
When ext3_writepage races with truncate, block_write_full_page() will see that the page is outside i_size and will bale out with -EIO. But ext3_writepage() will ignore this and will proceed to add the buffers to the transaction. Later, kjournald tries to write them out and goes BUG() because those buffers are not mapped to disk. The fix is to not attach the buffers to the transaction in ext3_writepage() if block_write_full_page() failed. So far so good, but that page now has dirty, unmapped buffers (the buffers were attached in a dirty state by ext3_writepage()). So teach block_write_full_page() to clean the buffers against the page if it is wholly outside i_size. (A simpler fix to all of this mught be to just bale out of ext3_writepage() if the page is outside i_size. But that is racy against block_write_full_page()'s subsequent execution of the same comparison).
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Andrew Morton authored
Patch from: Oleg Drokin <green@namesys.com> It moves all the arg checking code from the start of generic_file_aio_write() into a standalone function, so other filesystems can avoid having to cut-n-paste them. The new function is exported to modules, and also inlined in filemap.c so that the current filesystems are unaffected. If someone is using ext2 and reiserfs at the same time, they lose a bit of icache.
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Andrew Morton authored
Patch from Oleg Drokin <green@namesys.com> Move these already-inline functions to a header file so that filesystems can reuse them. For the reiserfs_file_write patch.
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Andrew Morton authored
Patch from: Zwane Mwaikambo <zwane@holomorphy.com> Considering that smp_call_function isn't allowed to hold a lock reference and within smp_call_function we lock and unlock call_lock thus triggering a preempt point. Therefore we can't guarantee that we'll be on the same processor when we hit do_flush_tlb_all_local. void flush_tlb_all(void) { smp_call_function (flush_tlb_all_ipi,0,1,1); do_flush_tlb_all_local(); } ... smp_call_function() { spin_lock(call_lock); ... spin_unlock(call_lock); <preemption point> } ... do_flush_tlb_all_local() - possibly not executing on same processor anymore.
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Andrew Morton authored
I'm getting a build error: fs/jfs/super.c: In function `jfs_fill_super': fs/jfs/super.c:335: parse error before `)' and it doesn't happen with gcc-3.2.x. Taking out the file-n-line fixes it up. This patch was acked by shaggy.
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Matthew Wilcox authored
Robbie Williamson found some bugs in the mandatory locking implementation. This patch fixes all the problems he found: - Fix null pointer dereference caused by sys_truncate() passing a null filp. - Honour the O_NONBLOCK flag when calling ftruncate() - Local variable `fl' wasn't being initialised correctly in locks_mandatory_area() - Don't return -ENOLCK from __posix_lock_file() when FL_ACCESS is set.
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Jens Axboe authored
We must grab lock before checking rl->count.
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Jens Axboe authored
bio-to-request front merging works, but request-to-request has been broken due to a bit too much copy'n pasting.
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Jens Axboe authored
Cleaner fix for the ioscheduler: - Problem with alias request, the new request gets lost. - Must always clear merge hash in move_to_dispatch()
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- 14 Feb, 2003 3 commits
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Linus Torvalds authored
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bk://kernel.bkbits.net/jgarzik/net-drivers-2.5Linus Torvalds authored
into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux
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Jeff Garzik authored
into redhat.com:/garz/repo/net-drivers-2.5
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