- 06 Nov, 2008 40 commits
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OGAWA Hirofumi authored
If inode->i_mode doesn't have S_WUGO, current code assumes it means ATTR_RO. However, if (~[ufd]mask & S_WUGO) == 0, inode->i_mode can't hold S_WUGO. Therefore the updated directory entry will always have ATTR_RO. This adds fat_mode_can_hold_ro() to check it. And if inode->i_mode can't hold, uses -i_attrs to hold ATTR_RO instead. With this, we don't set ATTR_RO unless users change it via ioctl() if (~[ufd]mask & S_WUGO) == 0. And on FAT_IOCTL_GET_ATTRIBUTES path, this adds ->i_mutex to it for not returning the partially updated attributes by FAT_IOCTL_SET_ATTRIBUTES to userland. Signed-off-by:
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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OGAWA Hirofumi authored
This adds three helpers: fat_make_attrs() - makes FAT attributes from inode. fat_make_mode() - makes mode_t from FAT attributes. fat_save_attrs() - saves FAT attributes to inode. Then this replaces: MSDOS_MKMODE() by fat_make_mode(), fat_attr() by fat_make_attrs(), ->i_attrs = attr & ATTR_UNUSED by fat_save_attrs(). And for root inode, those is used with ATTR_DIR instead of bogus ATTR_NONE. Signed-off-by:
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OGAWA Hirofumi authored
Use same style with vfat_lookup(). Signed-off-by:
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OGAWA Hirofumi authored
d_invalidate() for positive dentry doesn't work in some cases (vfsmount, nfsd, and maybe others). shrink_dcache_parent() by d_invalidate() is pointless for vfat usage at all. So, this kills it, and intead of it uses d_move(). To save old behavior, this returns alias simply for directory (don't change pwd, etc..). the directory lookup shouldn't be important for performance. Signed-off-by:
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OGAWA Hirofumi authored
- Add comments for handling dcache of vfat. - Separate case-sensitive case and case-insensitive to vfat_revalidate() and vfat_ci_revalidate(). vfat_revalidate() doesn't need to drop case-insensitive negative dentry on creation path. - Current code is missing to set ->d_revalidate to the negative dentry created by unlink/etc.. This sets ->d_revalidate always, and returns 1 for positive dentry. Now, we don't need to change ->d_op dynamically anymore, so this just uses sb->s_root->d_op to set ->d_op. - d_find_alias() may return DCACHE_DISCONNECTED dentry. It's not the interesting dentry there. This checks it. - Add missing LOOKUP_PARENT check. We don't need to drop the valid negative dentry for (LOOKUP_CREATE | LOOKUP_PARENT) lookup. - For consistent filename on creation path, this drops negative dentry if we can't see intent. Signed-off-by:
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OGAWA Hirofumi authored
Current vfat_lookup() creates negetive dentry blindly if vfat_find() returned a error. It's wrong. If the error isn't -ENOENT, just return error. Signed-off-by:
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OGAWA Hirofumi authored
Use fat_detach() instead of opencoding it. Signed-off-by:
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OGAWA Hirofumi authored
This fixes the missing update for bhs/nr_bhs in case the caller accessed from block boundary to first block of boundary. Signed-off-by:
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OGAWA Hirofumi authored
fat_hash() is using the algorithm known as bad. Instead of it, this uses hash_32(). The following is the summary of test. old hash: hash func (1000 times): 33489 cycles total inodes in hash table: 70926 largest bucket contains: 696 smallest bucket contains: 54 new hash: hash func (1000 times): 33129 cycles total inodes in hash table: 70926 largest bucket contains: 315 smallest bucket contains: 236 Signed-off-by:
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Darren Jenkins authored
Coverity CID 2332 & 2333 RESOURCE_LEAK In fat_search_long() if fat_parse_long() returns a -ve value we return without first freeing unicode. This patch free's them on this error path. The above was false positive on current tree, but this change is more clean, so apply as cleanup. [hirofumi@mail.parknet.co.jp: fix coding style] Signed-off-by:
Darren Jenkins <darrenrjenkins@gmail.com> Signed-off-by:
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OGAWA Hirofumi authored
Since fat_dir_ioctl() was already fixed (i.e. called under ->i_mutex), and __fat_readdir() doesn't take BKL anymore. So, BKL for ->llseek() is pointless, and we have to use generic_file_llseek(). Signed-off-by:
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OGAWA Hirofumi authored
This cleans date_dos2unix()/fat_date_unix2dos() up. New code should be much more readable. And this fixes those old functions. Those doesn't handle 2100 correctly. 2100 isn't leap year, but old one handles it as leap year. Also, with this, centi sec is handled and is fixed. Signed-off-by:
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OGAWA Hirofumi authored
This splits __KERNEL__ stuff in include/msdos_fs.h into fs/fat/fat.h. Signed-off-by:
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OGAWA Hirofumi authored
This just moves those files, but change link order from MSDOS, VFAT to VFAT, MSDOS. Signed-off-by:
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Bart Trojanowski authored
While debugging a sync mount regression on vfat I noticed that there were mount options parsed by the driver that were not documented. [hirofumi@mail.parknet.co.jp: fix some parts] Signed-off-by:
Bart Trojanowski <bart@jukie.net> Signed-off-by:
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Andrew Victor authored
The architecture header files were recently moved from include/asm-arm/mach-at91/ to arch/arm/mach-at91/include/mach/. The SAM9 watchdog driver still includes a header from the old location. Signed-off-by:
Andrew Victor <linux@maxim.org.za> Cc: Wim Van Sebroeck <wim@iguana.be> Signed-off-by:
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Frans Pop authored
-rtc0: alarms up to one month, y3k, 114 bytes nvram, , hpet irqs irqs +rtc0: alarms up to one month, y3k, 114 bytes nvram, hpet irqs Signed-off-by:
Frans Pop <elendil@planet.nl> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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David Brownell authored
The atmel_serial driver is mismanaging its clock by leaving it on at all times ... the whole point of clock management is to leave it off unless it's actively needed, which conserves power!! Although the kernel doesn't actually hang without my fix, it does discard quite a lot of early console output. The result still looks correct: usart users= 1 on 35000000 Hz, for atmel_usart.0 usart users= 0 off 35000000 Hz, for atmel_usart.2 when using ttyS0 as serial console. [haavard.skinnemoen@atmel.com: Make sure clock is enabled early for console] Signed-off-by:David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by:
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Li Zefan authored
cpuset can be used to move a process onto or off an isolated CPU. Signed-off-by:
Li Zefan <lizf@cn.fujitsu.com> Signed-off-by:
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Geert Uytterhoeven authored
commit 3e680aae ("fb: convert lock/unlock_kernel() into local fb mutex") introduced several deadlocks in the fb_compat_ioctl() path, as mutex_lock() doesn't allow recursion, unlike lock_kernel(). This broke frame buffer applications on 64-bit systems with a 32-bit userland. commit 120a3747 ("framebuffer compat_ioctl deadlock") fixed one of the deadlocks. This patch fixes the remaining deadlocks: - Revert commit 120a3747, - Extract the core logic of fb_ioctl() into a new function do_fb_ioctl(), - Change all callsites of fb_ioctl() where info->lock is already held to call do_fb_ioctl() instead, - Add sparse annotations to all routines that take info->lock. Signed-off-by:
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Cc: Mikulas Patocka <mpatocka@redhat.com> Cc: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Gerald Schaefer authored
My last bugfix here (adding zone->lock) introduced a new problem: Using page_zone(pfn_to_page(pfn)) to get the zone after the for() loop is wrong. pfn will then be >= end_pfn, which may be in a different zone or not present at all. This may lead to an addressing exception in page_zone() or spin_lock_irqsave(). Now I use __first_valid_page() again after the loop to find a valid page for page_zone(). Signed-off-by:
Gerald Schaefer <gerald.schaefer@de.ibm.com> Acked-by:
Nathan Fontenot <nfont@austin.ibm.com> Reviewed-by:
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by:
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Arthur Jones authored
In ext3_sync_fs, we only wait for a commit to finish if we started it, but there may be one already in progress which will not be synced. In the case of a data=ordered umount with pending long symlinks which are delayed due to a long list of other I/O on the backing block device, this causes the buffer associated with the long symlinks to not be moved to the inode dirty list in the second phase of fsync_super. Then, before they can be dirtied again, kjournald exits, seeing the UMOUNT flag and the dirty pages are never written to the backing block device, causing long symlink corruption and exposing new or previously freed block data to userspace. This can be reproduced with a script created by Eric Sandeen <sandeen@redhat.com>: #!/bin/bash umount /mnt/test2 mount /dev/sdb4 /mnt/test2 rm -f /mnt/test2/* dd if=/dev/zero of=/mnt/test2/bigfile bs=1M count=512 touch /mnt/test2/thisisveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryverylongfilename ln -s /mnt/test2/thisisveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryverylongfilename /mnt/test2/link umount /mnt/test2 mount /dev/sdb4 /mnt/test2 ls /mnt/test2/ umount /mnt/test2 To ensure all commits are synced, we flush all journal commits now when sync_fs'ing ext3. Signed-off-by:
Arthur Jones <ajones@riverbed.com> Cc: Eric Sandeen <sandeen@redhat.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: <linux-ext4@vger.kernel.org> Cc: <stable@kernel.org> [2.6.everything] Signed-off-by:
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Qinghuang Feng authored
Paramter @mem has been removed since v2.6.26, now delete it's comment. Signed-off-by:
Qinghuang Feng <qhfeng.kernel@gmail.com> Acked-by:
Randy Dunlap <rdunlap@xenotime.net> Signed-off-by:
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dann frazier authored
P700m support was added in: 9cff3b38 Update cciss.txt to match. Signed-off-by:
dann frazier <dannf@hp.com> Acked-by:
Mike Miller <mike.miller@hp.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by:
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Tim Hockin authored
Signed-off-by:
Tim Hockin <thockin@google.com> Signed-off-by:
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Li Zefan authored
This fixes an oops when reading /proc/sched_debug. A cgroup won't be removed completely until finishing cgroup_diput(), so we shouldn't invalidate cgrp->dentry in cgroup_rmdir(). Otherwise, when a group is being removed while cgroup_path() gets called, we may trigger NULL dereference BUG. The bug can be reproduced: # cat test.sh #!/bin/sh mount -t cgroup -o cpu xxx /mnt for (( ; ; )) { mkdir /mnt/sub rmdir /mnt/sub } # ./test.sh & # cat /proc/sched_debug BUG: unable to handle kernel NULL pointer dereference at 00000038 IP: [<c045a47f>] cgroup_path+0x39/0x90 ... Call Trace: [<c0420344>] ? print_cfs_rq+0x6e/0x75d [<c0421160>] ? sched_debug_show+0x72d/0xc1e ... Signed-off-by:Paul Menage <menage@google.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Ingo Molnar <mingo@elte.hu> Cc: <stable@kernel.org> [2.6.26.x, 2.6.27.x] Signed-off-by:
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David Rientjes authored
It's insufficient to simply compare node ids when warning about offnode page_structs since it's possible to still have local affinity. Acked-by:
Christoph Lameter <cl@linux-foundation.org> Signed-off-by:
David Rientjes <rientjes@google.com> Signed-off-by:
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Christoph Lameter authored
Move the migrate_prep outside the mmap_sem for the following system calls 1. sys_move_pages 2. sys_migrate_pages 3. sys_mbind() It really does not matter when we flush the lru. The system is free to add pages onto the lru even during migration which will make the page migration either skip the page (mbind, migrate_pages) or return a busy state (move_pages). Fixes this lockdep warning (and potential deadlock): Some VM place has mmap_sem -> kevent_wq via lru_add_drain_all() net/core/dev.c::dev_ioctl() has rtnl_lock -> mmap_sem (*) the ioctl has copy_from_user() and it can do page fault. linkwatch_event has kevent_wq -> rtnl_lock Signed-off-by:Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Hugh Dickins <hugh@veritas.com> Cc: Rik van Riel <riel@redhat.com> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Signed-off-by:
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Anatolij Gustschin authored
Add a framebuffer driver for the Fujitsu Carmine/Coral-P(A)/Lime graphics controllers. Lime GDC support is known to work on PPC440EPx based lwmon5 and MPC8544E based socrates embedded boards, both equipped with Lime GDC. Carmine/Coral-P PCI GDC support is known to work on PPC440EPx based Sequoia board and also on x86 platform. Signed-off-by:
Anatolij Gustschin <agust@denx.de> Cc: Dmitry Baryshkov <dbaryshkov@gmail.com> Cc: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Matteo Fortini <m.fortini@selcomgroup.com> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by:
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David Rientjes authored
When /proc/sys/vm/oom_dump_tasks is enabled, it's only necessary to dump task state information for thread group leaders. The kernel log gets quickly overwhelmed on machines with a massive number of threads by dumping non-thread group leaders. Reviewed-by:
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Andrew Morton authored
Searching MAINTAINERS for "ioat" comes up empty. Fix this. Cc: "Dan Williams" <dan.j.williams@intel.com> Cc: "Sosnowski, Maciej" <maciej.sosnowski@intel.com> Signed-off-by:
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Andy Whitcroft authored
As we can determine exactly when a gigantic page is in use we can optimise the common regular page cases by pulling out gigantic page initialisation into its own function. As gigantic pages are never released to buddy we do not need a destructor. This effectivly reverts the previous change to the main buddy allocator. It also adds a paranoid check to ensure we never release gigantic pages from hugetlbfs to the main buddy. Signed-off-by:
Andy Whitcroft <apw@shadowen.org> Cc: Jon Tollefson <kniht@linux.vnet.ibm.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: <stable@kernel.org> [2.6.27.x] Signed-off-by:
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Andy Whitcroft authored
When working with hugepages, hugetlbfs assumes that those hugepages are smaller than MAX_ORDER. Specifically it assumes that the mem_map is contigious and uses that to optimise access to the elements of the mem_map that represent the hugepage. Gigantic pages (such as 16GB pages on powerpc) by definition are of greater order than MAX_ORDER (larger than MAX_ORDER_NR_PAGES in size). This means that we can no longer make use of the buddy alloctor guarentees for the contiguity of the mem_map, which ensures that the mem_map is at least contigious for maximmally aligned areas of MAX_ORDER_NR_PAGES pages. This patch adds new mem_map accessors and iterator helpers which handle any discontiguity at MAX_ORDER_NR_PAGES boundaries. It then uses these to implement gigantic page versions of copy_huge_page and clear_huge_page, and to allow follow_hugetlb_page handle gigantic pages. Signed-off-by:
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Mike Miller authored
This regression was introduced by commit 6ae5ce8e ("cciss: remove redundant code"). This patch fixes a regression where the controller firmware version is not displayed in procfs. The previous patch would be called anytime something changed. This will get called only once for each controller. Signed-off-by:
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Mike Miller authored
Regression introduced by commit 6ae5ce8e ("cciss: remove redundant code"). This patch fixes a broken symlink in sysfs that was introduced by the above commit. We broke it in 2.6.27-rc on or about 20080804. Some installers are broken if this symlink does not exist and they may not detect the logical drives configured on the controller. It does not require being backported into 2.6.26.x or earlier kernels. Signed-off-by:
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Ian Kent authored
The function check_dev_ioctl_version() returns an error code upon fail but it isn't captured and returned in validate_dev_ioctl() as it should be. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Ian Kent <raven@themaw.net> Signed-off-by:
Jeff Moyer <jmoyer@redhat.com> Signed-off-by:
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Ian Kent authored
When checking a directory tree in autofs_tree_busy() we can incorrectly decide that the tree isn't busy. This happens for the case of an active offset mount as autofs4_follow_mount() follows past the active offset mount, which has an open file handle used for expires, causing the file handle not to count toward the busyness check. Signed-off-by:
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Henrik Rydberg authored
Add temperature sensor support for iMac 8. Signed-off-by:
Henrik Rydberg <rydberg@euromail.se> Tested-by:
Klaus Doblmann <klaus.doblmann@gmail.com> Signed-off-by:
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Henrik Rydberg authored
Add accelerometer, backlight and temperature sensor support for the new unibody Macbook Pro 5. Signed-off-by:
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Henrik Rydberg authored
Add accelerometer, backlight and temperature sensor support for the new unibody Macbook 5. Signed-off-by:
David M. Lary <dmlary@gmail.com> Signed-off-by:
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