- 08 Nov, 2005 40 commits
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Alan Hourihane authored
AGP allocation/deallocation is suffering major performance issues due to the nature of global_flush_tlb() being called on every change_page_attr() call. For small allocations this isn't really seen, but when you start allocating 50000 pages of AGP space, for say, texture memory, then things can take seconds to complete. In some cases the situation is doubled or even quadrupled in the time due to SMP, or a deallocation, then a new reallocation. I've had a case of upto 20 seconds wait time to deallocate and reallocate AGP space. This patch fixes the problem by making it the caller's responsibility to call global_flush_tlb(), and so removes it from every instance of mapping a page into AGP space until the time that all change_page_attr() changes are done. Signed-off-by:
Dave Jones <davej@redhat.com> Signed-off-by:
Andrew Morton <akpm@osdl.org>
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Oleg Nesterov authored
When non-leader thread does exec, de_thread calls release_task(leader) before calling exit_itimers(). If local timer interrupt happens in between, it can oops in send_group_sigqueue() while taking ->sighand->siglock == NULL. However, we can't change send_group_sigqueue() to check p->signal != NULL, because sys_timer_create() does get_task_struct() only in SIGEV_THREAD_ID case. So it is possible that this task_struct was already freed and we can't trust p->signal. This patch changes de_thread() so that leader released after exit_itimers() call. Signed-off-by:
Oleg Nesterov <oleg@tv-sign.ru> Acked-by:
Chris Wright <chrisw@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Linus Torvalds authored
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Hugh Dickins authored
Update comment on get_user_insn to the more general "pte lock", which may or may not be the page_table_lock. Note vmtruncate handled like kswapd. Signed-off-by:
Hugh Dickins <hugh@veritas.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
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Marcel Holtmann authored
This patch removes all relics of the /proc usage from the Bluetooth subsystem core and its upper layers. All the previous information are now available via /sys/class/bluetooth through appropriate functions. Signed-off-by:
Marcel Holtmann <marcel@holtmann.org> Signed-off-by:
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Marcel Holtmann authored
This patch adds the endian annotations to the Bluetooth core. Signed-off-by:
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Marcel Holtmann authored
This patchs adds the module parameter ignore_dga to the HCI USB driver which makes it possible to prevent this driver from being loaded by some buggy Digianswer devices. Signed-off-by:
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Herbert Xu authored
When ip_queue_xmit calls ip_select_ident_more for IP identity selection it gives it the wrong packet count for TSO packets. The ip_select_* functions expect one less than the number of packets, so we need to subtract one for TSO packets. This bug was diagnosed and fixed by Tom Young. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Jesper Juhl authored
From: Jesper Juhl <jesper.juhl@gmail.com> This is the net/ part of the big kfree cleanup patch. Remove pointless checks for NULL prior to calling kfree() in net/. Signed-off-by:
Jesper Juhl <jesper.juhl@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Arnaldo Carvalho de Melo <acme@conectiva.com.br> Acked-by:
YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by:
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Andrew Morton authored
From: Andrew Morton <akpm@osdl.org> Two missing unlocks, as noted by Ted Unangst <tedu@coverity.com> Signed-off-by:
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Matt Domsch authored
From: Matt Domsch <Matt_Domsch@dell.com> The patch below implements the Microsoft Point-to-Point Encryption method as a PPP compressor/decompressor. This is necessary for Linux clients and servers to interoperate with Microsoft Point-to-Point Tunneling Protocol (PPTP) servers (either Microsoft PPTP servers or the poptop project) which use MPPE to encrypt data when creating a VPN. This patch differs from the kernel_ppp_mppe DKMS pacakge at pptpclient.sourceforge.net by utilizing the kernel crypto routines rather than providing its own SHA1 and arcfour implementations. Minor changes to ppp_generic.c try to prevent a link from disabling compression (in our case, the encryption) after it has started using compression (encryption). Feedback to <pptpclient-devel@lists.sourceforge.net> please. Signed-off-by:
Matt Domsch <Matt_Domsch@dell.com> Cc: James Cameron <james.cameron@hp.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by:
Brice Goglin <Brice.Goglin@ens-lyon.org> Acked-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
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Philippe De Muyter authored
From: "Philippe De Muyter" <phdm@macqel.be> This patch avoids ppp-generated kernel crashes on machines where unaligned accesses are forbidden (ie: m68000), by fixing ppp alignment setting for reused skb's. Signed-off-by:
Philippe De Muyter <phdm@macqel.be> Cc: "David S. Miller" <davem@davemloft.net> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by:
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Julian Anastasov authored
There was a fix in 2.6.13 that changed the behaviour of ip_vs_conn_expire_now function not to put reference to connection, its callers should hold write lock or connection refcnt. But we forgot to convert one caller, when the real server for connection is unavailable caller should put the connection reference. It happens only when sysctl var expire_nodest_conn is set to 1 and such connections never expire. Thanks to Roberto Nibali who found the problem and tested a 2.4.32-rc2 patch, which is equal to this 2.6 version. Patch for 2.4 is already sent to Marcelo. Signed-off-by:
Julian Anastasov <ja@ssi.bg> Signed-off-by:
Roberto Nibali <ratz@drugphish.ch> Signed-off-by:
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Stephen Hemminger authored
There is no reason for sk_add_backlog to be a macro. It can just be an inline function and get type checking. Signed-off-by:
Stephen Hemminger <shemminger@osdl.org> Signed-off-by:
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Thomas Graf authored
Fixes an invalid memory reference when the basic classifier is used without any ematches but just actions. Signed-off-by:
Thomas Graf <tgraf@suug.ch> Signed-off-by:
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Carlo Comin authored
Patch from Carlo Comin <vl4d spine-group.org> Signed-off-by:
Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by:
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YOSHIFUJI Hideaki authored
Choose more appropriate source address; e.g. - outgoing interface - non-deprecated - scope - matching label Signed-off-by:
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YOSHIFUJI Hideaki authored
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YOSHIFUJI Hideaki authored
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Linus Torvalds authored
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Ram Pai authored
Signed-off-by:
Ram Pai <linuxram@us.ibm.com> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Ram Pai authored
An unbindable mount does not forward or receive propagation. Also unbindable mount disallows bind mounts. The semantics is as follows. Bind semantics: It is invalid to bind mount an unbindable mount. Move semantics: It is invalid to move an unbindable mount under shared mount. Clone-namespace semantics: If a mount is unbindable in the parent namespace, the corresponding cloned mount in the child namespace becomes unbindable too. Note: there is subtle difference, unbindable mounts cannot be bind mounted but can be cloned during clone-namespace. Signed-off-by:
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Ram Pai authored
This makes bind, rbind, move, clone namespace and umount operations aware of the semantics of slave mount (see Documentation/sharedsubtree.txt in the last patch of the series for detailed description). Signed-off-by:
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Ram Pai authored
A slave mount always has a master mount from which it receives mount/umount events. Unlike shared mount the event propagation does not flow from the slave mount to the master. Signed-off-by:
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Ram Pai authored
An unmount of a mount creates a umount event on the parent. If the parent is a shared mount, it gets propagated to all mounts in the peer group. Signed-off-by:
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Ram Pai authored
Implement handling of mount --move in presense of shared mounts (see Documentation/sharedsubtree.txt in the end of patch series for detailed description). Signed-off-by:
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Ram Pai authored
Implement handling of MS_BIND in presense of shared mounts (see Documentation/sharedsubtree.txt in the end of patch series for detailed description). Signed-off-by:
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Ram Pai authored
This creates shared mounts. A shared mount when bind-mounted to some mountpoint, propagates mount/umount events to each other. All the shared mounts that propagate events to each other belong to the same peer-group. Signed-off-by:
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Ram Pai authored
A private mount does not forward or receive propagation. This patch provides user the ability to convert any mount to private. Signed-off-by:
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Ram Pai authored
This removes the per-namespace semaphore in favor of a global semaphore. This can have an effect on namespace scalability. Signed-off-by:
Miklos Szeredi <miklos@szeredi.hu> Signed-off-by:
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Ram Pai authored
- clean up the ugliness in may_umount_tree() - fix a bug in do_loopback(). after cloning a tree, do_loopback() unlinks only the topmost mount of the cloned tree, leaving behind the children mounts on their corresponding expiry list. Signed-off-by:
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Ram Pai authored
umount is done under the protection of the namespace semaphore. This can lead to intresting deadlocks when the last reference to a mount is released, if filesystem code is in sufficiently nasty state. This collects all the to-be-released-mounts and releases them after releasing the namespace semaphore. That both reduces the time we are holding namespace semaphore and gets the things more robust. Idea proposed by Al Viro. Signed-off-by:
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Ram Pai authored
Old semantics: graft_tree() grabs a reference on the vfsmount before returning success. New one: graft_tree() leaves that to caller. All the callers of graft_tree() immediately dropped that reference anyway. Changing the interface takes care of this unnecessary overhead. Idea proposed by Al Viro. Signed-off-by:
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Ram Pai authored
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Al Viro authored
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Al Viro authored
Allow caller of seq_open() to kmalloc() seq_file + whatever else they want and set ->private_data to it. seq_open() will then abstain from doing allocation itself. Signed-off-by:
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Al Viro authored
- check_mnt() on the source of binding should've been unconditional from the very beginning. My fault - as far I could've trace it, that's an old thinko made back in 2001. Kudos to Miklos for spotting it... Fixed. - code cleaned up. Signed-off-by:
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