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2006-10-01[PATCH] Move ncpfs 32bit compat ioctl to ncpfsPetr Vandrovec
The ncp specific compat ioctls are clearly local to one file system, so the code can better live there. This version of the patch moves everything into the generic ioctl handler and uses it for both 32 and 64 bit calls. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Petr Vandrovec <petr@vandrovec.name> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] VFS: Use SEEK_{SET, CUR, END} instead of hardcoded valuesJosef 'Jeff' Sipek
VFS: Use SEEK_{SET,CUR,END} instead of hardcoded values Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net> Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] Create fs/utimes.cAlexey Dobriyan
* fs/open.c is getting bit crowdy * preparation to lutimes(2) Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] kmemdup: some usersAlexey Dobriyan
Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] fs/partitions: Conversion to generic booleanRichard Knutsson
Conversion of booleans to: generic-boolean.patch (2006-08-23) Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] fs/jfs: Conversion to generic booleanRichard Knutsson
Conversion of booleans to: generic-boolean.patch (2006-08-23) Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] fs/ntfs: Conversion to generic booleanRichard Knutsson
Conversion of booleans to: generic-boolean.patch (2006-08-23) Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se> Signed-off-by: Anton Altaparmakov <aia21@cantab.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-30[PATCH] Update axboe@suse.de email addressJens Axboe
As people often look for the copyright in files to see who to mail, update the link to a neutral one. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] fix creating zero sized bio mempools in low memory systemMilan Broz
In the very low memory systems is in the init_bio call scale parameter set to zero and it leads to creating zero sized mempool. This patch prevents pool_entries parameter become zero, so the created pool have at least 1 entry. Mempool with 0 entries lead to incorrect behaviour of mempool_free. (Alloc requests are not waken up and system stalls in mempool_alloc->ioschedule). Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] CONFIG_BLOCK internal.h cleanupsAndrew Morton
- forward declare struct superblock - use inlines, not macros Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Make it possible to disable the block layer [try #6]David Howells
Make it possible to disable the block layer. Not all embedded devices require it, some can make do with just JFFS2, NFS, ramfs, etc - none of which require the block layer to be present. This patch does the following: (*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev support. (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls an item that uses the block layer. This includes: (*) Block I/O tracing. (*) Disk partition code. (*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS. (*) The SCSI layer. As far as I can tell, even SCSI chardevs use the block layer to do scheduling. Some drivers that use SCSI facilities - such as USB storage - end up disabled indirectly from this. (*) Various block-based device drivers, such as IDE and the old CDROM drivers. (*) MTD blockdev handling and FTL. (*) JFFS - which uses set_bdev_super(), something it could avoid doing by taking a leaf out of JFFS2's book. (*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and linux/elevator.h contingent on CONFIG_BLOCK being set. sector_div() is, however, still used in places, and so is still available. (*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and parts of linux/fs.h. (*) Makes a number of files in fs/ contingent on CONFIG_BLOCK. (*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK. (*) set_page_dirty() doesn't call __set_page_dirty_buffers() if CONFIG_BLOCK is not enabled. (*) fs/no-block.c is created to hold out-of-line stubs and things that are required when CONFIG_BLOCK is not set: (*) Default blockdev file operations (to give error ENODEV on opening). (*) Makes some /proc changes: (*) /proc/devices does not list any blockdevs. (*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK. (*) Makes some compat ioctl handling contingent on CONFIG_BLOCK. (*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if given command other than Q_SYNC or if a special device is specified. (*) In init/do_mounts.c, no reference is made to the blockdev routines if CONFIG_BLOCK is not defined. This does not prohibit NFS roots or JFFS2. (*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return error ENOSYS by way of cond_syscall if so). (*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if CONFIG_BLOCK is not set, since they can't then happen. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Remove no-longer necessary linux/buffer_head.h inclusions ↵David Howells
[try #6] Remove inclusions of linux/buffer_head.h that are no longer necessary due to the transfer of a number of things out of there. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Remove no-longer necessary linux/mpage.h inclusions [try #6]David Howells
Remove inclusions of linux/mpage.h that are no longer necessary due to the transfer of generic_writepages(). Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Move the msdos device ioctl compat stuff to the msdos driver ↵David Howells
[try #6] Move the msdos device ioctl compat stuff from fs/compat_ioctl.c to the msdos driver so that the msdos header file doesn't need to be included. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Move the Ext3 device ioctl compat stuff to the Ext3 driver ↵David Howells
[try #6] Move the Ext3 device ioctl compat stuff from fs/compat_ioctl.c to the Ext3 driver so that the Ext3 header file doesn't need to be included. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Move the Ext2 device ioctl compat stuff to the Ext2 driver ↵David Howells
[try #6] Move the Ext2 device ioctl compat stuff from fs/compat_ioctl.c to the Ext2 driver so that the Ext2 header file doesn't need to be included. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Move the ReiserFS device ioctl compat stuff to the ReiserFS ↵David Howells
driver [try #6] Move the ReiserFS device ioctl compat stuff from fs/compat_ioctl.c to the ReiserFS driver so that the ReiserFS header file doesn't need to be included. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Move common FS-specific ioctls to linux/fs.h [try #6]David Howells
Move common FS-specific ioctls from linux/ext2_fs.h to linux/fs.h as FS_IOC_* and FS_IOC32_* and have the users of them use those as a base. Also move the GETFLAGS/SETFLAGS flags to linux/fs.h as FS_*_FL macros, and then have the other users use them as a base. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Move the loop device ioctl compat stuff to the loop driver ↵David Howells
[try #6] Move the loop device ioctl compat stuff from fs/compat_ioctl.c to the loop driver so that the loop header file doesn't need to be included. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Move __invalidate_device() to block_dev.c [try #6]David Howells
Move __invalidate_device() from fs/inode.c to fs/block_dev.c so that it can more easily be disabled when the block layer is disabled. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Dissociate generic_writepages() from mpage stuff [try #6]David Howells
Dissociate the generic_writepages() function from the mpage stuff, moving its declaration to linux/mm.h and actually emitting a full implementation into mm/page-writeback.c. The implementation is a partial duplicate of mpage_writepages() with all BIO references removed. It is used by NFS to do writeback. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Remove dependence on existence of blockdev_superblock [try #6]David Howells
Move blockdev_superblock extern declaration from fs/fs-writeback.c to a headerfile and remove the dependence on it by wrapping it in a macro. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Move extern declarations out of fs/*.c into header files [try #6]David Howells
Create a new header file, fs/internal.h, for common definitions local to the sources in the fs/ directory. Move extern definitions that should be in header files from fs/*.c to fs/internal.h or other main header files where they span directories. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Don't call block_sync_page() from AFS [try #6]David Howells
The AFS filesystem no longer needs to override its sync_page() op. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] BLOCK: Move functions out of buffer code [try #6]David Howells
Move some functions out of the buffering code that aren't strictly buffering specific. This is a precursor to being able to disable the block layer. (*) Moved some stuff out of fs/buffer.c: (*) The file sync and general sync stuff moved to fs/sync.c. (*) The superblock sync stuff moved to fs/super.c. (*) do_invalidatepage() moved to mm/truncate.c. (*) try_to_release_page() moved to mm/filemap.c. (*) Moved some related declarations between header files: (*) declarations for do_invalidatepage() and try_to_release_page() moved to linux/mm.h. (*) __set_page_dirty_buffers() moved to linux/buffer_head.h. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] Don't need to disable interrupts for tasklist_lockOleg Nesterov
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] ext3: make meta data reads use READ_METAJens Axboe
Signed-off-by: Jens Axboe <axboe@suse.de>
2006-09-30[PATCH] cfq-iosched: kill cfq_exit_lockJens Axboe
cfq_exit_lock is protecting two things now: - The per-ioc rbtree of cfq_io_contexts - The per-cfqd linked list of cfq_io_contexts The per-cfqd linked list can be protected by the queue lock, as it is (by definition) per cfqd as the queue lock is. The per-ioc rbtree is mainly used and updated by the process itself only. The only outside use is the io priority changing. If we move the priority changing to not browsing the rbtree, we can remove any locking from the rbtree updates and lookup completely. Let the sys_ioprio syscall just mark processes as having the iopriority changed and lazily update the private cfq io contexts the next time io is queued, and we can remove this locking as well. Signed-off-by: Jens Axboe <axboe@suse.de>
2006-09-29Merge git://oss.sgi.com:8090/xfs/xfs-2.6Linus Torvalds
* git://oss.sgi.com:8090/xfs/xfs-2.6: (49 commits) [XFS] Remove v1 dir trace macro - missed in a past commit. [XFS] 955947: Infinite loop in xfs_bulkstat() on formatter() error [XFS] pv 956241, author: nathans, rv: vapo - make ino validation checks [XFS] pv 956240, author: nathans, rv: vapo - Minor fixes in [XFS] Really fix use after free in xfs_iunpin. [XFS] Collapse sv_init and init_sv into just the one interface. [XFS] standardize on one sema init macro [XFS] Reduce endian flipping in alloc_btree, same as was done for [XFS] Minor cleanup from dio locking fix, remove an extra conditional. [XFS] Fix kmem_zalloc_greedy warnings on 64 bit platforms. [XFS] pv 955157, rv bnaujok - break the loop on EFAULT formatter() error [XFS] pv 955157, rv bnaujok - break the loop on formatter() error [XFS] Fixes the leak in reservation space because we weren't ungranting [XFS] Add lock annotations to xfs_trans_update_ail and [XFS] Fix a porting botch on the realtime subvol growfs code path. [XFS] Minor code rearranging and cleanup to prevent some coverity false [XFS] Remove a no-longer-correct debug assert from dio completion [XFS] Add a greedy allocation interface, allocating within a min/max size [XFS] Improve error handling for the zero-fsblock extent detection code. [XFS] Be more defensive with page flags (error/private) for metadata ...
2006-09-29[PATCH] Kcore elf note namesz field fixVivek Goyal
o As per ELF specifications, it looks like that elf note "namesz" field contains the length of "name" including the size of null character. And currently we are filling "namesz" without taking into the consideration the null character size. o Kexec-tools performs this check deligently hence I ran into the issue while trying to open /proc/kcore in kexec-tools for some info. Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] expand_fdtable(): remove pointless unlock+lockAndrew Morton
This unlock/lock on a super-unlikely path isn't worth the kernel text. Cc: Vadim Lobanov <vlobanov@speakeasy.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] Clean up expand_fdtable() and expand_files()Vadim Lobanov
Perform a code cleanup against the expand_fdtable() and expand_files() functions inside fs/file.c. It aims to make the flow of code within these functions simpler and easier to understand, via added comments and modest refactoring. Signed-off-by: Vadim Lobanov <vlobanov@speakeasy.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] Access Control Lists for tmpfsAndreas Gruenbacher
Add access control lists for tmpfs. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] Generic infrastructure for aclsAndreas Gruenbacher
The patches solve the following problem: We want to grant access to devices based on who is logged in from where, etc. This includes switching back and forth between multiple user sessions, etc. Using ACLs to define device access for logged-in users gives us all the flexibility we need in order to fully solve the problem. Device special files nowadays usually live on tmpfs, hence tmpfs ACLs. Different distros have come up with solutions that solve the problem to different degrees: SUSE uses a resource manager which tracks login sessions and sets ACLs on device inodes as appropriate. RedHat uses pam_console, which changes the primary file ownership to the logged-in user. Others use a set of groups that users must be in in order to be granted the appropriate accesses. The freedesktop.org project plans to implement a combination of a console-tracker and a HAL-device-list based solution to grant access to devices to users, and more distros will likely follow this approach. These patches have first been posted here on 2 February 2005, and again on 8 January 2006. We have been shipping them in SLES9 and SLES10 with no problems reported. The previous submission is archived here: http://lkml.org/lkml/2006/1/8/229 http://lkml.org/lkml/2006/1/8/230 http://lkml.org/lkml/2006/1/8/231 This patch: Add some infrastructure for access control lists on in-memory filesystems such as tmpfs. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] enforce RLIMIT_NOFILE in poll()Chris Snook
POSIX states that poll() shall fail with EINVAL if nfds > OPEN_MAX. In this context, POSIX is referring to sysconf(OPEN_MAX), which is the value of current->signal->rlim[RLIMIT_NOFILE].rlim_cur in the linux kernel, not the compile-time constant which happens to also be named OPEN_MAX. In the current code, an application may poll up to max_fdset file descriptors, even if this exceeds RLIMIT_NOFILE. The current code also breaks applications which poll more than max_fdset descriptors, which worked circa 2.4.18 when the check was against NR_OPEN, which is 1024*1024. This patch enforces the limit precisely as POSIX defines, even if RLIMIT_NOFILE has been changed at run time with ulimit -n. To elaborate on the rationale for this, there are three cases: 1) RLIMIT_NOFILE is at the default value of 1024 In this (default) case, the patch changes nothing. Calls with nfds > 1024 fail with EINVAL both before and after the patch, and calls with nfds <= 1024 pass the check both before and after the patch, since 1024 is the initial value of max_fdset. 2) RLIMIT_NOFILE has been raised above the default In this case, poll() becomes more permissive, allowing polling up to RLIMIT_NOFILE file descriptors even if less than 1024 have been opened. The patch won't introduce new errors here. If an application somehow depends on poll() failing when it polls with duplicate or invalid file descriptors, it's already broken, since this is already allowed below 1024, and will also work above 1024 if enough file descriptors have been open at some point to cause max_fdset to have been increased above nfds. 3) RLIMIT_NOFILE has been lowered below the default In this case, the system administrator or the user has gone out of their way to protect the system from inefficient (or malicious) applications wasting kernel memory. The current code allows polling up to 1024 file descriptors even if RLIMIT_NOFILE is much lower, which is not what the user or administrator intended. Well-written applications which only poll valid, unique file descriptors will never notice the difference, because they'll hit the limit on open() first. If an application gets broken because of the patch in this case, then it was already poorly/maliciously designed, and allowing it to work in the past was a violation of POSIX and a DoS risk on low-resource systems. With this patch, poll() will permit exactly what POSIX suggests, no more, no less, and for any run-time value set with ulimit -n, not just 256 or 1024. There are existing apps which which poll a large number of file descriptors, some of which may be invalid, and if those numbers stradle 1024, they currently fail with or without the patch in -mm, though they worked fine under 2.4.18. Signed-off-by: Chris Snook <csnook@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] fs/namei.c: replace multiple current->fs by shortcut variableAndreas Mohr
Replace current->fs by fs helper variable to reduce some indirection overhead and (at least at the moment, before the current_thread_info() %gs PDA improvement is available) get rid of more costly current references. Reduces fs/namei.o from 37786 to 37082 Bytes (704 Bytes saved). [akpm@osdl.org: cleanup] Signed-off-by: Andreas Mohr <andi@lisas.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] Ban register_filesystem(NULL);Alexey Dobriyan
Everyone passes valid pointer there. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] 9p: fix leak on error pathAlexey Dobriyan
If register_filesystem() fails mux workqueue must be killed. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Eric Van Hensbergen <ericvh@gmail.com> Cc: Ron Minnich <rminnich@lanl.gov> Cc: Latchesar Ionkov <lucho@ionkov.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] cramfs: make cramfs_uncompress_exit() return voidAlexey Dobriyan
It always returns 0, so relying on it is useless. The only caller isn't checking return value. In general, un-, de-, -free functions should return void. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] freevxfs: fix leak on error pathAlexey Dobriyan
If register_filesystem() fails, vxfs_inode cache must be destroyed. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] cramfs: rewrite init_cramfs_fs()Alexey Dobriyan
Two lines -- two bugs. :-( Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] fix mem_write() return valueFrederik Deweerdt
At the beginning of the routine, "copied" is set to 0, but it is no good because in lines 805 and 812 it is set to other values. Finally, the routine returns as if it copied 12 (=ENOMEM) bytes less than it actually did. Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com> Acked-by: Eric Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] block_dev.c mutex_lock_nested() fixJason Baron
In the case below we are locking the whole disk not a partition. This change simply brings the code in line with the piece above where when we are the 'first' opener, and we are a partition. Signed-off-by: Jason Baron <jbaron@redhat.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] autofs4: pending flag not cleared on mount failIan Kent
During testing I've found that the mount pending flag can be left set at exit from autofs4_lookup after a failed mount request. This shouldn't be allowed to happen and causes incorrect error returns. Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] autofs4: autofs4_follow_link false negative fixIan Kent
The check for an empty directory in the autofs4_follow_link method fails occassionally due to old dentrys. We had the same problem autofs4_revalidate ages ago. I thought we wouldn't need this in autofs4_follow_link, silly me. Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] cdev documentationJonathan Corbet
Add some documentation comments for the cdev interface. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Cc: Rolf Eike Beer <eike-kernel@sf-tec.de> Acked-by: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] tty: stop the tty vanishing under procfs accessAlan Cox
Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] I/O Error attempting to read last partial block of a file in an ↵Joel & Rebecca VanderZee
ISO9660 file system There was an I/O error that prevented reading the last partial block of large files in an ISO9660 filesystem. The error was generated when a file comprised more than one section and had a size that was not an exact multiple of the filesystem block size. This patch removes the check (and failure) for reading into the last partial block (and possibly beyond) for multiple-section files. It worked in my testing to prevent reading beyond the end of the section; my first patch just incremented the sect_size block count for a partial block and continued doing the check. But there is a commment in the source code about reading beyond the end of the file to fill a page cache. Failing to access beyond the section would prevent reading beyond the end of the file. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] dquot: add proper locking when using current->signal->ttyJan Kara
Dquot passes the tty to tty_write_message without locking Signed-off-by: Jan Kara <jack@suse.cz> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] elf_fdpic_core_dump: don't take tasklist_lockOleg Nesterov
do_each_thread() is rcu-safe, and all tasks which use this ->mm must sleep in wait_for_completion(&mm->core_done) at this point, so we can use RCU locks. Also, remove unneeded INIT_LIST_HEAD(new) before list_add(new, head). Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Acked-By: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>