- 31 Oct, 2006 15 commits
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Paolo 'Blaisorblade' Giarrusso authored
To simplify error handling, make sure fd is saved into ubd_dev->fd only when we are sure it is an fd and not an error code. Signed-off-by:
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Paolo 'Blaisorblade' Giarrusso authored
Use bitfields for boolean fields in ubd data structure. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Pure whitespace and style fixes split out from subsequent patch. Some changes (err -> ret) don't make sense now, only later, but I split them out anyway since they cluttered the patch. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
do_ubd is actually just a boolean variable - the way it is used currently is a leftover from the old 2.4 block layer, but it is still used; its use is suspicious, but removing it would be too intrusive for now and needs more thinking. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Add some comments about requirements for ubd_io_lock and expand its use. When an irq signals that the "controller" (i.e. another thread on the host, which does the actual requests and is the only one blocked on I/O on the host) has done some work, we call again the request function ourselves (do_ubd_request). We now do that with ubd_io_lock held - that's useful to protect against concurrent calls to elv_next_request and so on. XXX: Maybe we shouldn't call at all the request function. Input needed on this. Are we supposed to plug and unplug the queue? That code "indirectly" does that by setting a flag, called do_ubd, which makes the request function return (it's a residual of 2.4 block layer interface). Meanwhile, however, merge this patch, which improves things. Cc: Jens Axboe <axboe@suse.de> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
This lock protects ubd setup and teardown, so is only used in process context; beyond that, during such setup memory allocations must be performed and some generic functions which can sleep must be called (such as add_disk()). So the only correct solution is to make it a mutex instead of a spin_lock. No other change is done - this lock must be acquired in different places but it's done afterwards. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
To rethink locking, I needed to understand well what each function does. While doing this I renamed some: * ubd_close -> ubd_close_dev (since it pairs with ubd_open_dev) * ubd_new_disk -> ubd_disk_register (it handles registration with the block layer - one hopes this makes clearer the difference with ubd_add()) Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Rename the ubd_dev array to ubd_devs and then call any "struct ubd" ubd_dev instead of dev, which doesn't make clear what we're treating (and no, it's not hungarian notation - not any more than calling all vm_area_struct vma or all inodes inode). Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Add documentation about some fields in struct ubd, whose meaning is non-obvious due to struct names (should change names altogether, I agree). Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
With 256 minors and 16 minors used per each UBD device, we can allow the use of up to 16 UBD devices per UML. Also chnage parse_unit and leave to the caller (which already do it) the check for excess numbers, since this is just supposed to do raw parsing. Signed-off-by:
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Andrew Morton authored
fs/block_dev.c: In function 'find_bd_holder': fs/block_dev.c:666: warning: return makes integer from pointer without a cast fs/block_dev.c:669: warning: return makes integer from pointer without a cast fs/block_dev.c: In function 'add_bd_holder': fs/block_dev.c:685: warning: unused variable 'tmp' fs/block_dev.c: In function 'bd_claim_by_kobject': fs/block_dev.c:773: warning: assignment makes pointer from integer without a cast Acked-by:
Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by:
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Linus Torvalds authored
Not halloween. Not scary. Just a regular -rc release.
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git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds authored
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] MIPS doesn't need compat_sys_getdents. [MIPS] JMR3927: Fixup another victim of the irq pt_regs cleanup. [MIPS] EMMA 2 / Markeins: struct resource takes physical addresses. [MIPS] EMMA 2 / Markeins: Convert to name struct resource initialization. [MIPS] EMMA 2 / Markeins: Formitting fixes split from actual address fixes. [MIPS] EMMA 2 / Markeins: Fix build wreckage due to genirq wreckage. [MIPS] Ocelot G: Fix build error and numerous warnings. [MIPS] Fix return value of TXX9 SPI interrupt handler [MIPS] Au1000: Fix warning about unused variable. [MIPS] Wire up getcpu(2) and epoll_wait(2) syscalls. [MIPS] Make SB1 cache flushes not to use on_each_cpu [MIPS] Fix warning about unused definition in c-sb1.c [MIPS] SMTC: Make 8 the default number of processors. [MIPS] Oprofile: Fix MIPSxx counter number detection. [MIPS] Au1xx0 code sets incorrect mips_hpt_frequency [MIPS] Oprofile: fix on non-VSMP / non-SMTC SMP configurations.
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Jun'ichi Nomura authored
add_bd_holder() is called from bd_claim_by_kobject to put a given struct bd_holder in the list if there is no matching entry. There are 3 possible results of add_bd_holder(): 1. there is no matching entry and add the given one to the list 2. there is matching entry, so just increment reference count of the existing one 3. something failed during its course 1 and 2 are successful cases. But for case 2, someone has to free the unused struct bd_holder. The current code frees it inside of add_bd_holder and returns same value 0 for both cases 1 and 2. However, it's natural and less error-prone if caller frees it since it's allocated by the caller. Signed-off-by: -
Jun'ichi Nomura authored
This fixes bd_claim_by_kobject to release bdev correctly in case that bd_claim succeeds but following add_bd_holder fails. Signed-off-by:
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- 30 Oct, 2006 25 commits
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Ralf Baechle authored
Signed-off-by:Ralf Baechle <ralf@linux-mips.org>
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Ralf Baechle authored
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Ralf Baechle authored
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Ralf Baechle authored
This fixes the wreckage caused by shuffeling the order of struct resource members. Signed-off-by: -
Ralf Baechle authored
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Ralf Baechle authored
I wonder if the original contributor still cares ... Signed-off-by: -
Ralf Baechle authored
The cause of the build errors was a 64-bit kernel being configured in ocelot_g_defconfig without the code being 64-bit proof. Fixed for now by limiting 64-bit selection to SYS_SUPPORTS_64BIT_KERNEL if BROKEN. Signed-off-by: -
Yoichi Yuasa authored
Signed-off-by:
Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by:
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Yoichi Yuasa authored
arch/mips/au1000/common/time.c: In function `mips_timer_interrupt': arch/mips/au1000/common/time.c:82: warning: unused variable `count' Signed-off-by:
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Ralf Baechle authored
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Manish Lachwani authored
This fixes the start_kernel(): bug: interrupts were enabled early messages. Signed-off-by:
Manish Lachwani <mlachwani@mvista.com> Signed-off-by:
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Yoichi Yuasa authored
arch/mips/mm/c-sb1.c: In function `sb1_cache_init': arch/mips/mm/c-sb1.c:447: warning: unused variable `handle_vec2_sb1' Signed-off-by:
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Ralf Baechle authored
8 is the next larger power of two of the currently 5 supported TCs. Signed-off-by: -
Ralf Baechle authored
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Sergei Shtylyov authored
Alchemy CPU counter ticks at the full CPU clock speed. Signed-off-by:
Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by:
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Ralf Baechle authored
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Albert Cahalan authored
The recent change to make x86_64 support i386 binaries compiled with -mregparm=3 only covered signal handlers without SA_SIGINFO. (the 3-arg "real-time" ones) This is useful for klibc at least. Signed-off-by:
Albert Cahalan <acahalan@gmail.com> Signed-off-by:
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Andrew Morton authored
- printk should remain dprintk - fix coding-style. Cc: Neil Brown <neilb@suse.de> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by:
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Kristian Mueller authored
APM BIOS Interface Secification can now be found at http://www.microsoft.com/whdc/archive/amp_12.mspxSigned-off-by:
Kristian Mueller <Kristian-M@Kristian-M.de> Acked-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Neil Brown authored
A recent patch fixed a problem which would occur when the refcount on an auth_domain reached zero. This problem has not been reported in practice despite existing in two major kernel releases because the refcount can never reach zero. This patch fixes the problems that stop the refcount reaching zero. 1/ We were adding to the refcount when inserting in the hash table, but only removing from the hashtable when the refcount reached zero. Obviously it never would. So don't count the implied reference of being in the hash table. 2/ There are two paths on which a socket can be destroyed. One called svcauth_unix_info_release(). The other didn't. So when the other was taken, we can lose a reference to an ip_map which in-turn holds a reference to an auth_domain So unify the exit paths into svc_sock_put. This highlights the fact that svc_delete_socket has slightly odd semantics - it does not drop a reference but probably should. Fixing this need a bit more thought and testing. Signed-off-by:
Neil Brown <neilb@suse.de> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by:
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Sergey Vlasov authored
Signed-off-by:
Sergey Vlasov <vsu@altlinux.ru> Acked-by:
Alan Cox <alan@redhat.com> Signed-off-by:
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Oleg Nesterov authored
Paranoid fix. The task can free its ->mm after the 'if (p->mm)' check. Signed-off-by:
Oleg Nesterov <oleg@tv-sign.ru> Cc: Shailabh Nagar <nagar@watson.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Jay Lan <jlan@sgi.com> Signed-off-by:
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akpm@osdl.org authored
From: Jeff Dike <jdike@addtoit.com>, Paolo Giarrusso <blaisorblade@yahoo.it> Make sure that when compiling USER_OBJS the correct compilation options are passed; since they are compiled with USER_CFLAGS which is derived from CFLAGS, make sure it is a recursively evaluated variable, so that changes to CFLAGS done afterwards the inclusion of arch/$(ARCH)/Makefile are reflected in USER_CFLAGS. For instance, without this patch userspace objects are never compiled with debug info active. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Fix commit 5f4c6bc1: it spits out warnings about missing syscall prototype (it is in <unistd.h>) and it does not recognize that two uses of _syscallX are to be resolved against kernel headers in the source tree, not against _syscallX; they in fact do not compile and would not work anyway. If _syscallX macros will be removed from the kernel tree altogether, the only reasonable solution for that piece of code is switching to open-coded inline assembly (it's remapping the whole executable from memory, except the page containing this code). Signed-off-by:
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Randy Dunlap authored
Make a filesystems DocBook book/file by moving all filesystems info from kernel-api.tmpl. Will also merge journal-api.tmpl into it soon (with permission from Roger Gammans). Localizes filesystem info and reduces size of the huge (produced) kernel-api output files. Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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