- 05 Jan, 2003 40 commits
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Chris Wilson authored
As part of my work on the Linux Kernel Janitors project, cleaning up on functions which call create_proc_*_entry and don't check for an error return, I would like to submit my patch to arch/mips64/sgi-ip27/ip27-rtc.c. This patch adds a printk() if misc_register fails (since that causes the driver to fail to load, it should be logged somewhere), and checks that create_proc_read_entry returned a valid handle. ENOENT seems to me like a good error code to return in this case, although EBUSY is a candidate too.
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William Stinson authored
This patch for driver drivers/telephony/ixj.c for Linux removes four calls to check_region using request_region instead. I don't have this hardware so I hope I got it right. This patch removes all but one reference to check_region in this driver. This is patch number 21 in a series of check_region patches I am doing as part of the kernel janitors project.
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Michael Still authored
This patch fixes a small typo in the Xbox xpad USB driver config help
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John Bradford authored
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William Stinson authored
This patch for isdn/hisax/sedlbauer.c driver for Linux removes one call to check_region using request_region instead. I don't have this hardware so I hope I got it right. This patch removes all references to check_region in this driver. This is patch number 16 in a series of check_region patches I am doing as part of the kernel janitors project.
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Chris Wilson authored
Working on the Linux Kernel Janitors project, and following up on Mikal Still's work there, I'd like to submit a patch for the Macintosh ANS LCD driver. I believe from Mikal's Patches page that his previous patch was rejected due to not cleaning up properly. I believe my patch addresses this issue, by calling iounmap() to free the IO remapping created by ioremap() earlier in the function, if the call to misc_register() fails for any reason. Unfortunately I don't know how to get this driver to compile on my machine, and therefore I can't even check that my patch compiles. If you can advise me how to set my machine up to dompile these drivers, then please get in touch =) I hope I didn't make any stupid mistakes in this patch either.
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William Stinson authored
This patch for drivers/isdn/hisax/mic.c driver for Linux removes one call to check_region using request_region instead. I don't have this hardware so I hope I got it right. This patch removes all references to check_region in this driver. This is patch number 18 in a series of check_region patches I am doing as part of the kernel janitors project.
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Thibaut Varene authored
I was doing some cleaning in the parisc files, and took a look at some arch indep ones btw. This fixes a warning.
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Craig Wilkie authored
This modifies the following files: - Documentation/Docbook/Makefile - Fix dependencies generating parportbook which caused tex to choke. Documentation/Docbook/kernel-api.tmpl - Remove references to source files which do not contain kernel-doc comments, which caused "errors" in the generated documentation. include/linux/init.h - fix a trivial function comment to correct the generated documentation. This patch partially addresses one of the issues on the Kernel Janitor TODO list - "someone who knows DocBook, or is willing to learn, should go through and clean up Documentation/DocBook to kill all the warnings that occur during "make pdfdocs" and generally make the documents look nicer, and render smaller PDFs."
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Chris Wilson authored
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Michael Still authored
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bk://are.twiddle.net/mod-2.5Linus Torvalds authored
into home.transmeta.com:/home/torvalds/v2.5/linux
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Daniel Ritz authored
apm_driver_version() isn't an __init function, but is called from the asynchronous APM driver thread (which might run after the init sequence has finished). This trivial fix stops APM from oopsing when compiled as module.
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Richard Henderson authored
into are.twiddle.net:/home/rth/BK/mod-2.5
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Rusty Russell authored
This changes /proc/modules to have fixed space-separated format, independent of CONFIG options or how many module dependencies there are. Old format: modname modsize [refcount [dep1] [dep2] ...] New format: modname modsize refcount deps1,[dep2,]... The module-init-tools have understood this format for over a month now. This change allows us to add new fields, ie. module state, module address, etc.
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Rusty Russell authored
This patch combines the common exception table searching functionality for various architectures, to avoid unneccessary (and currently buggy) duplication, and so that the exception table list and lock can be kept private to module.c. The archs provide "struct exception_table" and "search_extable": the generic infrastructure drives the rest.
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Rusty Russell authored
This implements EXPORT_SYMBOL_GPL and MODULE_LICENSE properly (so restrictions are enforced). Also fixes "proprietory" spelling.
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Andries E. Brouwer authored
I told someone to do "make htmldocs" and just to be sure checked myself. Below two fixes.
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Andrew Morton authored
Patch from Bill Irwin. Prodding from me. The hashtables in kernel/pid.c are 128 kbytes, which is far too large for very small machines. So we dynamically size them and allocate them from bootmem. From 16 buckets on the very smallest machine up to 4096 buckets (effectively half the current size) with one gigabyte of memory or more. The patch also switches the hashing from a custom hash over to the more powerful hash_long().
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Andrew Morton authored
Patch from Manfred Spraul <manfred@colorfullife.com> Effectively adds another 24 megabytes of ia32 KVA. kmap uses a 4 MB (2 MB if PAE is enabled) area for the persistant mappings. But PKMAP_BASE is 4GB-32MB, i.e. around 28 MB are reserved for kmap (4 MB for fixmappings). The attached patch shrink that to 4 MB (+4MB for fixmappings) and adds a test to check for an overlap between fixmap and kmap areas.
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Andrew Morton authored
slab redzoning errors are very hard to decrypt. The patch adds a human-readable interpretation to each error and changes it to not go BUG() when an error is detected.
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Andrew Morton authored
David Brownell noticed this. mempool_resize() is calling kfree on a rare path when it should be calling the pool's free function. The patch fixes that up, and then disables mempool_resize() compilation - it has no callers at present.
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Andrew Morton authored
This patch uses the radix_tree_preload() API in add_to_page_cache(). A new gfp_mask argument is added to add_to_page_cache(), which is then passed on to radix_tree_preload(). It's pretty simple. In the case of adding pages to swapcache we're still using GFP_ATOMIC, so these addition attempts can still fail. That's OK, because the error is handled and, unlike file pages, it will not cause user applicaton failures. This codepath (radix-tree node exhaustion on swapout) was well tested in the days when the swapper_space radix tree was fragmented all over the place due to unfortunate swp_entry bit layout.
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Andrew Morton authored
radix_tree_node_alloc() uses GFP_ATOMIC, under spinlocking. If the allocation fails then userspace sees ENOMEM and application failure occurs. A single add_to_page_cache() will require up to six radix_tree_nodes on 32-bit machines, twice this on 64-bit machines (quadruple the worst-case storage on 64-bit). My approach to solving this problem is to create a per-cpu pool of preallocated radix_tree_nodes, private to the radix-tree code. The radix-tree user will call the new radix-tree API function radix_tree_preload() to ensure that this pool has sufficient nodes to cover the worst-case. radix_tree_preload() should be called outside locks, with GFP_KERNEL so that it can run page reclaim. If it succeeds, radix_tree_preload() will return with preemption disabled so that the per-cpu radix_tree_node pool is protected. The user must call radix_tree_preload_end() to terminate the transaction. In the common case, the per-cpu pools will never be touched: radix_tree_insert() will only dip into the pool if kmem_cache_alloc() fails. The pools will remain full at all times. This is to optimise the fastpath - it is just a few instructions. This patch also removes the now-unneeded radix-tree mempool. This saves 130 kbytes of permanently allocated kernel memory. 260k on 64-bit platforms.
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Andrew Morton authored
Update page_add_rmap() callers to allocate their own pte_chain structures, and to pass those into page_add_rmap(). The swapoff path has not yet been updated and is still oopsable. The locking there is tricky.
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Andrew Morton authored
The VM allocates pte_chains with GFP_ATOMIC, under deep locking. If that allocation fails, we oops. My approach to solving this is to require that the caller of page_add_rmap() pass in a pte_chain structure for page_add_rmap() to use. Then, callers can arrange to allocate that structure outside locks with GFP_KERNEL. This patch provides the base infrastructure. A common case is that page_add_rmap() will in fact not consume the pte_chain, because an empty slot was found within one of the page's existing pte_chain structures. So this patch provides for a special one-deep per-cpu pte_chain cache to optimise this case of taking just one pte_chain and then immediately putting it back. We end up adding maybe 20-30 instructions to the pagefault path to handle the eventuality of pte_chain allocation failures. Lots of other design ideas were considered. This is the best I could come up with.
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Andrew Morton authored
- Don't evaluate pfn_to_page(pte_pfn(pte)) twice. - adjust whitespace - rename inner variable `ptepage' to `page'. It's more logical, and reduces collisions with the shared pagetable patch (which has to rename it anyway, because it adds a `ptepage' which really is "the page which holds ptes").
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Andrew Morton authored
Patch from Urban Widmark <Urban.Widmark@enlight.net> Adds support for the 3c920, which appears to be the same as a 3c905C.
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Andrew Morton authored
- fix starfire.c printk compile warning (dma_addr_t can be 64 bit) (Martin Bligh) - Remove an ifdef from the scheduler
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Andrew Morton authored
Patch from Adam J. Richter <adam@yggdrasil.com> and Milton Miller <miltonm@bga.com> There's some init-time code which is supposed to read a devfs directory by expanding the bufer until the whole directory fits. But the logic is wrong and it only works if the whole directory fits into 512 bytes. So fix that up, and also clean up some coding in there, and rationalise the duplicated definition of linux_dirent64.
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Andrew Morton authored
Patch from "Randy.Dunlap" <rddunlap@osdl.org> Convert the selection of LOG_BUF_SIZE from an ifdef tangle in printk.c into config logic.
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Neil Brown authored
Add a new field to the md superblock, in an used area, to record where resync was up-to on a clean shutdown while resync is active. Restart from this point. The extra field is verified by having a second copy of the event counter. If the second event counter is wrong, we ignore the extra field. This patch thanks to Angus Sawyer <angus.sawyer@dsl.pipex.com>
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Neil Brown authored
When resyncing an array, md will back off if it detects other activity on the device. This used to be based on the whole device, not the partition, but recent changes made it only check IO on the partition. This patch causes all sync_io accounting to be done on the whole device (bdev->bd_contains).
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Neil Brown authored
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Neil Brown authored
Assorted fixes particularly related to handling the new style xdr_buf buffers for NFSv4 server
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Neil Brown authored
It works much better than my little toy hash functions.
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Neil Brown authored
This uses the read-without-write style transaction files in nfsctl. We can write a number of threads, and then read back the number of threads that resulted, or we can just open and read in which case we read back the number of threads without changing it.
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Neil Brown authored
The getfh system call takes an IP address, which is only really appropriate for AUTH_UNIX authentication. With this interface, you call can ask for a filehandle for a particular domain. You write domainname pathname maxlength to the file, and then read back the filehandle All strings a qword quoted.
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Neil Brown authored
The nfsd filesystem provides an interface to nfsd. Most of the current files should be considered legacy interfaces as they are not particularly suitable for filesystem interaction, but are required to support the syscall interface. This patch puts a '.' in front of all the names so they appear as hidden names when the directory is listed.
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Neil Brown authored
The transaction files in the 'nfsd' filesystem stores the per-transaction response size in the per-inode i_size, which is wrong. With this patch a page is allocated for holding size and request and response, so routines don't need to copy_fromuser. Also, some routines were allocating rather large (>1024 bytes) stuctures on the stack for copy_fromuser into, which was not nice and is now not needed. Also, writeonly and write_read methods are unified in a single transaction style interface. Write then read performs and action and returns a response. Write without read just performs the action and ignores response. Read without write triggers an empty transaction which can still have a response. That functionality will be used in a later patch.
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