- 11 Jul, 2004 21 commits
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Mika Kukkonen authored
CC [M] fs/smbfs/proc.o fs/smbfs/proc.c: In function `smb_proc_readdir_long': fs/smbfs/proc.c:2313: warning: comparison of unsigned expression < 0 is always false fs/smbfs/proc.c:2467: warning: comparison of unsigned expression < 0 is always false The first one is pretty dangerous looking, as smb_proc_readdir_long() can return several negative error values and all those are converted to unsigned and then erronously pass the test on line 2313. Chris Wright gave it a quick look and we did not see immediately if this can be remotely exploited, but it looks pretty scary. The second warning on line 2467 is just extra so I just removed it. Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Chris Wright authored
Fixup another round of sparse warnings of the type: warning: Using plain integer as NULL pointer Acked by Stephen. From: Mika Kukkonen <mika@osdl.org> Signed-off-by:
Chris Wright <chrisw@osdl.org> Signed-off-by:
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Hirofumi Ogawa authored
Signed-off-by:
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by:
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Jens Axboe authored
Arjan (sensibly) put a might_sleep() in mempool_alloc() and it caught a bad cfq usage. Signed-off-by:
Jens Axboe <axboe@suse.de> Signed-off-by:
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Andrew Morton authored
Signed-off-by:
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Keith Owens authored
PPC small data area base symbols shift between kallsyms phases 1 and 2, which makes the kallsyms data unstable. Exclude them from the kallsyms list. Signed-off-by:
Keith Owens <kaos@sgi.com> Signed-off-by:
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Christoph Hellwig authored
The <driver>_config function called just before clear DEV_CONFIG, and DEV_STALE_LINK isn't set anywhere else. This is a copy & paste thing found in all old pcmcia drivers. The patch has been sent to the isdn list ages ago but I didn't get any response. Signed-off-by:
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Neil Brown authored
nfsd currently just sets f_pos when seeking in a directory. This bypasses any checking and other handling that a filesystem might want to do. So instead, we define "vfs_llseek" to be an exported "llseek", and use that, both to seek at the start, and the find the new position at the end. Thanks to "Derrick Schommer" <dschommer@acopia.com> "Trond Myklebust" <trond.myklebust@fys.uio.no> Signed-off-by:Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by:
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Adrian Bunk authored
The patch below against 2.6.7-mm5 fixes more compile errors with MCA_LEGACY=n. Cc: Jeff Garzik <jgarzik@pobox.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by:
Adrian Bunk <bunk@fs.tum.de> Signed-off-by:
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David Howells authored
Here's a patch to allow the kAFS filesystem to use the automount facility patch presented in a previous email. It allows me to mount an AFS root volume on /afs and then just walk through the directory structure causing referenced volumes to be automounted and autoumounted. For instance, if I do: [root@andromeda root]# mount -t afs \#root.afs. /afs [root@andromeda root]# ls /afs asd cambridge cambridge.redhat.com grand.central.org [root@andromeda root]# ls /afs/cambridge afsdoc [root@andromeda root]# ls /afs/cambridge/afsdoc/ ChangeLog html LICENSE pdf RELNOTES-1.2.2 And then look in the mountpoint catalogue, I see: [root@andromeda root]# cat /proc/mounts ... #root.afs. /afs afs rw 0 0 #root.cell. /afs/cambridge.redhat.com afs rw 0 0 #afsdoc. /afs/cambridge.redhat.com/afsdoc afs rw 0 0 Then after waiting a few minutes: [root@andromeda root]# cat /proc/mounts ... #root.afs. /afs afs rw 0 0 Is all that remains. Signed-Off-By:
David Howells <dhowells@redhat.com> Signed-off-by:
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David Howells authored
Here's a patch that I worked out with Al Viro that adds support for a filesystem (such as kAFS) to perform automounting intrinsically without the need for a userspace daemon. It also adds support for such mountpoints to be degraded at the filesystem's behest until they've been untouched long enough that they'll be removed. I've a patch (to follow) that removes some #ifdef's from fs/afs/* thus allowing it to make use of this facility. There are five pieces to this: (1) Any interested filesystem needs to have at least one list to which expirable mountpoints can be added. Access to this list is governed by the vfsmount_lock. (2) When a filesystem wants to create an expirable mount, it calls do_kern_mount() to get a handle on the filesystem it wants mounting, and then calls do_add_mount() to mount that filesystem on the designated mountpoint, supplying the list mentioned in (1) to which the vfsmount will be added. In kAFS's case, the mountpoint is a directory with a follow_link() method defined (fs/afs/mntpt.c). This uses the struct nameidata supplied as an argument as a determination of where the new filesystem should be mounted. (3) When something using a vfsmount finishes dealing with it, it calls mntput(). This unmarks the vfsmount for immediate expiry. There are two criteria for determining if a vfsmount may be expired - it mustn't be marked as in use for anything other than being a child of another vfsmount, and it must have an expiry mark against it already. (4) The filesystem then determines the policy on expiring the mounts created in (2). When it feels the need to, it passes the list mentioned in (1) to mark_mounts_for_expiry() to request everything on the list be expired. This function examines each mount listed. If the vfsmount meets the criteria mentioned in (3), then the vfsmount is deleted from the namespace and disposed of as for unmounting; otherwise the vfsmount is left untouched apart from now bearing an expiration mark if it didn't before. kAFS's expiration policy is simply to invoke this process at regular intervals for all the mounts on its list. (5) An expiration facility is also provided to userspace: by calling umount() with a MNT_EXPIRE flag, it can make a request to unmount only if the mountpoint hasn't been used since the last request and isn't in use now. This allows expiration to be driven by userspace instead of by the kernel if that is desirable. This also means that do_umount() has to use a different version of path_release() to everyone else... it can't call mntput() as that clears the expiration flag, thus rendering this unachievable; so it's version of path_release() calls _mntput(), which doesn't do the clear. My original idea was to give the kernel more knowledge of automounted things. This avoids a certain problem with stat() on a mountpoint causing it to mount (for example, do "ls -l /afs" on a machine with kAFS), but Al wanted it done this way. > Why is autofs unsuitable? Because: (1) Autofs is flat; AFS requires a tree - mounts on mounts on mounts on mounts... (2) AFS holds the data as to what the mountpoints are and where they go, and these may be cross-links to subtrees beyond your control. It's also not trivial to extract a list of mountpoints as is required for autofs. (3) Autofs is not namespace safe. (4) Ducking back to userspace to get that to do the mount is pretty tricky if namespaces are involved. In fact, autofs may well want to make use of this facility. Signed-Off-By: -
Brian Gerst authored
Process modules in sorted order during modpost and modules install. Signed-off-by:
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Brian Gerst authored
Consolidate rules for installing internal and external modules. Signed-off-by:
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Paul Mackerras authored
From: Will Schmidt <willschm@us.ibm.com> This patch includes updates and cleanup for the PPC64 proc/lparcfg interface. - use seq_file's seq_printf for output - remove redundant e2a function. (use viopath.c's instead) - change to Kconfig to allow building as a module. - export required symbols from LparData.c Pass # 2 updates.. - Per Pauls request I've removed the vpurr references, and left just a stub function get_purr(). - this should apply clean to latest linus tree. (test-applied against 2.6.7-rc3). Pass # 3 updates... - Correcting my previously incorrect description of the lparcfg_count_active_processors() function.. This is for the cases where we have some number of virtual processors that are different than the total number of threads in the system. (i.e. systemcfg->processorcount isnt the desired value for partition_active_processors) - moved e2a function into its own file in arch/ppc64/lib. - changed lparcfg_count_active_processors() to use a while loop instead of a for loop. - removed redundant of_node_put in lparcfg_count_active_processors(). - removed unneeded parms from get-system-parameter rtas_call. Signed-off-by:Will Schmidt <willschm@us.ibm.com> Signed-off-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
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Paul Mackerras authored
On recent pSeries systems, EEH needs to be enabled even on PCI Host Bridges (PHB's). If not enabled, then ordinary PCI probing (config-space reads/writes to the bridges) will generate firmware error messages, possibly a very large number of messages for systems with large numbers of pci slots. Signed-off-by:
Linas Vepstas <linas@linas.org> Signed-off-by:
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Paul Mackerras authored
This patch fixes some unbalanced usage of pci_dev_get()/pci_dev_put() calls in the eeh code. The old code had too many calls to dev_put, which could cause memory structs to be freed prematurely, possibly leading to bad bad pointer derefs in certain cases. Signed-off-by:
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Anton Blanchard authored
gcc 3.5 is complaining about the size of copy_from_user. It turns out it is rather large and putting it out of line saves us about 30kB on a default kernel build. Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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Kumar Gala authored
Here is a patch to fix some bugs with the current CPM UART code, Tom Rini has seen this and ok'd it. * Fixes need to config both SMC1 & SCC1 * Fixes buffer descriptor wrapping issue in set_termios * Fixes confusion in Kconfig regarding CPM1 vs CPM2 Signed-off-by:
Kumar Gala <kumar.gala@freescale.com> Signed-off-by:
Pantelis Antoniou <panto@intracom.gr> Signed-off-by:
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Olaf Hering authored
We have something like this in our kernel since many months. It sets the console device to what OF uses. ppc64 does the same, and it works ok. serial is found on CHRP, ch-a is used on all powermacs. Signed-off-by:
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Jan Kara authored
The patch fixes locking of i_flags. It removes S_QUOTA flag from i_flags because it was almost unused and updating it on some places correctly (under i_sem) would be tricky. Note that accessing of S_NOQUOTA flag is serialized by dqptr_sem and so we can reliably tested without i_sem. Signed-off-by:
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Russell King authored
- Setup synchronous expansion card resource. - Fix order of IRQ and FIQ mask/offsets.
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- 10 Jul, 2004 2 commits
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Russell King authored
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Russell King authored
This include isn't required for ARM builds either.
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- 08 Jul, 2004 2 commits
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Russell King authored
Apparantly, the reason for this change is that it gives "much less NFS stalls with a SMC91C96 on a 10/100MB switch." Alan Cox's comments on this is: "spec says 16 collision retries max _ever_. I bet his 'broken switch' is a case of half v full duplex" and a recommendation to remove it. Also, since the change does not limit the number of times we may retry to send the packet, I think this code opens a potential DoS attack against network which has a machine connected running this code.
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John Lenz authored
Patch from John Lenz Cleanup and forward port of patch 1849. This patch provides support for the SHARP LoCoMo device, a companion chip similar to the sa1111 device. It is present in many of the SHARP Zaurus line of PDAs.
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- 06 Jul, 2004 15 commits
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bk://bk.arm.linux.org.uk/linux-2.6-rmkLinus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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Ian Campbell authored
Patch from Ian Campbell Update 1954/1 to use pxa2xx- as the platform device prefix instead of pxa2xx_. This changes pxamci to pxa2xx-mci, pxa2xx_udc to pxa2xx-udc and pxafb to pxa2xx-fb. pxa2xx-uart doesn't need changing.
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Russell King authored
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bk://kernel.bkbits.net/davem/sparc-2.6Linus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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bk://kernel.bkbits.net/davem/net-2.6Linus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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Linus Torvalds authored
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Wen-chien Jesse Sung authored
hm, I had a brainfart here. The recent "fix" to snd_ctl_read() actually unfixed it. Revert that, and fix the real bug. Cc: Jaroslav Kysela <perex@suse.cz> Signed-off-by:
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Jerzy Szczepkowski authored
There was a memory leak in epoll. The reference count (d_count) of the struct dentry of a new epoll-fd was set to TWO. (new_inode() assigned ONE, than ep_getfd() incremented it by dget()). There was only ONE reference to this dentry, so struct dentry and struct inode were never freed. Signed-off-by:
Davide Libenzi <davidel@xmailserver.org> Signed-off-by:
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Rusty Russell authored
From: Alexey Dobriyan <adobriyan@mail.ru> drivers/char/upd4990a.c was removed from 2.6. Signed-off-by:
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Gerd Knorr authored
From: Michael Geng <linux@MichaelGeng.de> The patch updates docs, comments + strings to also mention the SAA5281 chip (which is compatible to the SAA5246A) as supported. Signed-off-by:
Michael Geng <linux@MichaelGeng.de> Signed-off-by:
Gerd Knorr <kraxel@bytesex.org> Signed-off-by:
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Mika Kukkonen authored
CHECK fs/smbfs/smbiod.c fs/smbfs/smbiod.c:68:25: warning: non-ANSI parameter list CHECK drivers/isdn/tpam/tpam_crcpc.c drivers/isdn/tpam/tpam_crcpc.c:57:15: warning: non-ANSI parameter list CHECK drivers/scsi/aic7xxx/aic79xx_reg_print.c drivers/scsi/aic7xxx/aic79xx_osm.h:791:19: warning: non-ANSI parameter list Signed-off-by:
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Andi Kleen authored
Move the memory policy freeing to later in exit to make sure the last memory allocations don't use an uninitialized policy. Signed-off-by:
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Antonino Daplas authored
This patch sets the correct capabilities flag for vesafb and vga16fb to provide fbcon with the correct hints as to the best scrolling mode. Signed-off-by:
Antonino Daplas <adaplas@pol.net> Signed-off-by:
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Antonino Daplas authored
Added a new scrolling mode (SCROLL_PAN_REDRAW) to fbcon that should greatly benefit unaccelerated drivers such as VESA fbdev. An increase of 3-10 times in scrolling speed can be expected. Currently, fbcon has 4 different scrolling methods (1-4). Potentially, we can have 6. This patch implements SCROLL_PAN_REDRAW (5). SCROLL_WRAP_REDRAW (6) is still unimplemented. Scroll Mode Operation YPan YWrap +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1. SCROLL_ACCEL copyarea No No 2. SCROLL_REDRAW imageblit No No 3. SCROLL_PAN copyarea Yes No 4. SCROLL_WRAP copyarea No Yes 5. SCROLL_PAN_REDRAW imageblit Yes No 6. SCROLL_WRAP_REDRAW imageblit No Yes +++++++++++++++++++++++++++++++++++++++++++++++++++++ Note 1: I've changed the nomenclature to increase clarity: SCROLL_ACCEL = SCROLL_MOVE SCROLL_REDRAW = SCROLL_REDRAW SCROLL_PAN = SCROLL_PAN_MOVE SCROLL_WRAP = SCROLL_WRAP_MOVE To demonstrate the effect of each of the scrolling methods on an unaccelerated PCI/AGP-based driver (vesafb), I used a simple benchmark (time cat linux/MAINTAINERS - a 50K text file). The framebuffer is set at: 1024x768-8bpp, 8x16 font, yres_virtual = 2*yres 1. SCROLL_MOVE: real 5m50.277s user 0m0.001s sys 5m50.227s Almost 6 minutes for a 50K text file. Using soft copyarea on a PCI-based card is just too slow (because copyarea has to read from the framebuffer memory). 2. SCROLL_PAN_MOVE scrollmode: SCROLL_PAN real 0m8.592s user 0m0.000s sys 0m8.586s Using ypan with copyarea dramatically improves the scrolling. However, the scrolling action is jerky (fast during the panning stages, slows down during the copyarea stages). 3. SCROLL_REDRAW (this is the default scrolling mode) real 0m3.189s user 0m0.000s sys 0m3.170s Simply eliminating the copyarea, even without ypanning, makes it faster than SCROLL_PAN_MOvE. Plus, the scrolling action is smoother. So, if we combine YPanning with imageblit (PAN_REDRAW), we get this: 4. SCROLL_PAN_REDRAW real 0m0.520s user 0m0.000s sys 0m0.518s That's almost 6x faster than SCROLL_REDRAW. Increasing the amount of video RAM still increases the speed, but not very dramatically. Higher than 16 MB, the increase is negligible. Using an accelerated driver, we see almost the same effect but not as dramatically: 1. SCROLL_MOVE - accel real 0m3.112s user 0m0.000s sys 0m3.112s 2. SCROLL_REDRAW - accel real 0m2.604s user 0m0.000s sys 0m2.603s Redraw is still faster than move, but not much. 3. SCROLL_PAN_MOVE - accel real 0m0.203s user 0m0.000s sys 0m0.202s 4. SCROLL_PAN_REDRAW - accel real 0m0.326s user 0m0.002s sys 0m0.323s This is one exception. If panning is enabled, move is actually faster than redraw. As to why, I don't know. So based on the above, fbcon will choose the scrolling method based on the following preference: Ypan/Ywrap > accel imageblit > accel copyarea > soft imageblit > (soft copyarea) Note 2: Exception: accel copyarea > accel imageblit if Pan/Wrap is enabled. Note 3: soft copyarea will be avoided by fbcon as much as possible unless there is a specific override, ie., FBINFO_READS_FAST flag is set. If this flag is set, fbcon will prefer copyarea over imageblit, accel or soft. As a final note, in order for fbcon to use the best scrolling method, the low-level drivers must provide the correct hinting by setting the FBINFO_HWACCEL_* flags. To vesafb users: boot vesafb like this for fastest scrolling action: video=vesafb:ypan,vram:16 Signed-off-by:
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Antonino Daplas authored
1. From Petr Vandrovec <vandrove@vc.cvut.cz>. Begin quote yesterday I finally found why 2.6.x has problems with taking over vgacon. Problem is that take_over_console does: if (IS_VISIBLE) save_screen(i); ... visual_init(i, 0); ... so code nicely saves screen contents, and calls visual_init, which calls fbcon's init, which in turn can issue vc_resize. And this vc_resize will trigger read from vc->vc_origin. But vc_origin still points to videomemory, not to the buffer where save_screen() copied its data. End quote So updating vc->vc_origin to point to screenbuf after the previous console deinitializes allows fbcon to correctly update the screen from the screen buffer. This change makes the clearing of vram (using fillrect) unnecessary. 2. If FBINFO_MISC_MODESWITCH flag is set in info, do the set_par() in fbcon_switch() instead of piggy-backing the set_par() on fbcon_resize(). This preserves the current var, skipping the unnecessary fb_find_mode() step. Signed-off-by:
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