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* [PATCH] mm: split page table lockHugh Dickins2005-10-291-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Christoph Lameter demonstrated very poor scalability on the SGI 512-way, with a many-threaded application which concurrently initializes different parts of a large anonymous area. This patch corrects that, by using a separate spinlock per page table page, to guard the page table entries in that page, instead of using the mm's single page_table_lock. (But even then, page_table_lock is still used to guard page table allocation, and anon_vma allocation.) In this implementation, the spinlock is tucked inside the struct page of the page table page: with a BUILD_BUG_ON in case it overflows - which it would in the case of 32-bit PA-RISC with spinlock debugging enabled. Splitting the lock is not quite for free: another cacheline access. Ideally, I suppose we would use split ptlock only for multi-threaded processes on multi-cpu machines; but deciding that dynamically would have its own costs. So for now enable it by config, at some number of cpus - since the Kconfig language doesn't support inequalities, let preprocessor compare that with NR_CPUS. But I don't think it's worth being user-configurable: for good testing of both split and unsplit configs, split now at 4 cpus, and perhaps change that to 8 later. There is a benefit even for singly threaded processes: kswapd can be attacking one part of the mm while another part is busy faulting. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] gfp_t: fs/*Al Viro2005-10-284-25/+25
| | | | | | | | | | | | | | | | | | | - ->releasepage() annotated (s/int/gfp_t), instances updated - missing gfp_t in fs/* added - fixed misannotation from the original sweep caught by bitwise checks: XFS used __nocast both for gfp_t and for flags used by XFS allocator. The latter left with unsigned int __nocast; we might want to add a different type for those but for now let's leave them alone. That, BTW, is a case when __nocast use had been actively confusing - it had been used in the same code for two different and similar types, with no way to catch misuses. Switch of gfp_t to bitwise had caught that immediately... One tricky bit is left alone to be dealt with later - mapping->flags is a mix of gfp_t and error indications. Left alone for now. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] gfp flags annotations - part 1Al Viro2005-10-082-12/+11
| | | | | | | | | | | | - added typedef unsigned int __nocast gfp_t; - replaced __nocast uses for gfp flags with gfp_t - it gives exactly the same warnings as far as sparse is concerned, doesn't change generated code (from gcc point of view we replaced unsigned int with typedef) and documents what's going on far better. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fs: fix-up schedule_timeout() usageNishanth Aravamudan2005-09-103-11/+10
| | | | | | | | | | | Use schedule_timeout_{,un}interruptible() instead of set_current_state()/schedule_timeout() to reduce kernel size. Also use helper functions to convert between human time units and jiffies rather than constant HZ division to avoid rounding errors. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] more SPIN_LOCK_UNLOCKED -> DEFINE_SPINLOCK conversionsIngo Molnar2005-09-091-1/+1
| | | | | | | | | This converts the final 20 DEFINE_SPINLOCK holdouts. (another 580 places are already using DEFINE_SPINLOCK). Build tested on x86. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [XFS] Revert recent quota Makefile change, not in a fit state for merging.Nathan Scott2005-09-091-2/+13
| | | | Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Fix modular XFS builds (Makefile botch).Nathan Scott2005-09-082-5/+5
| | | | Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Remove special Kconfig XFS menu, make XFS options "inline".Nathan Scott2005-09-081-24/+21
| | | | | Signed-off-by: Eric Sandeen <sandeen@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Cleanup some -Wundef flag warnings in the endian macros (thanksNathan Scott2005-09-086-30/+32
| | | | | | | | | Christoph). SGI-PV: 942400 SGI-Modid: xfs-linux-melb:xfs-kern:23771a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Sort out some cosmetic differences between XFS trees.Nathan Scott2005-09-058-161/+217
| | | | | | | SGI-PV: 904196 SGI-Modid: xfs-linux-melb:xfs-kern:23719a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Fix incorrect use of BMAPI_READ in unwritten extent handlingNathan Scott2005-09-052-4/+3
| | | | | | | | | (luckily just cosmetic). SGI-PV: 942232 SGI-Modid: xfs-linux-melb:xfs-kern:23718a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] replace "extern inline" with "static inline" Patch from Adrian BunkChristoph Hellwig2005-09-051-1/+1
| | | | | | | | | | <bunk@stusta.de>, thanks a lot! SGI-PV: 942227 SGI-Modid: xfs-linux:xfs-kern:198642a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Switch kernel thread handling to the kthread_ APIChristoph Hellwig2005-09-054-46/+17
| | | | | | | | SGI-PV: 942063 SGI-Modid: xfs-linux:xfs-kern:198388a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Fix racy access to pb_flags. pagebuf_rele() modified pb_flags afterDavid Chinner2005-09-052-18/+51
| | | | | | | | | | | | | | the pagebuf had been unlocked if the buffer was delwri. At high load, this could result in a race when the superblock was being synced that would result the flags being incorrect and the iodone functions being executed incorrectly. This then leads to iclog callback failures or AIL list corruptions resulting in filesystem shutdowns. SGI-PV: 923981 SGI-Modid: xfs-linux:xfs-kern:23616a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Retry linux inode cacech lookup if we found a stale inode. ThisChristoph Hellwig2005-09-051-12/+16
| | | | | | | | | | fixes crashes under high nfs load SGI-PV: 941429 SGI-Modid: xfs-linux:xfs-kern:197929a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Fixes a bug in the quota code when allocating a new dquot recordTim Shimmin2005-09-053-7/+60
| | | | | | | | | | | | | which can cause an extent hole to be filled and a free extent to be processed. In this case, we make a few mistakes: forget to pass back the transaction, forget to put a hold on the buffer and forget to add the buf to the new transaction. SGI-PV: 940366 SGI-Modid: xfs-linux:xfs-kern:23594a Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] remove some dead code from pagebufChristoph Hellwig2005-09-052-37/+0
| | | | | | | | SGI-PV: 934766 SGI-Modid: xfs-linux:xfs-kern:197783a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] allow a null behaviour pointer in linvfs_clear_inodeChristoph Hellwig2005-09-051-3/+6
| | | | | | | | SGI-PV: 940531 SGI-Modid: xfs-linux:xfs-kern:197782a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Manage spinlock differences between kernel versions a bit.Nathan Scott2005-09-051-0/+3
| | | | | | | SGI-PV: 904196 SGI-Modid: xfs-linux:xfs-kern:23563a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] add handlers to fix xfs_flock_t alignment issues in compat ioctlsEric Sandeen2005-09-051-3/+62
| | | | | | | | SGI-PV: 938899 SGI-Modid: xfs-linux:xfs-kern:197403a Signed-off-by: Eric Sandeen <sandeen@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Check if there is first behavior before calling VOP_RECLAIM fromFelix Blyakher2005-09-051-3/+5
| | | | | | | | | | linvfs_clear_inode(). The behavior may go away in VOP_INACTIVE. SGI-PV: 941000 SGI-Modid: xfs-linux:xfs-kern:197355a Signed-off-by: Felix Blyakher <felixb@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Need to be able to reset sb_qflags if not mounting with quotasTim Shimmin2005-09-056-76/+95
| | | | | | | | | | having previously mounted with quotas. SGI-PV: 940491 SGI-Modid: xfs-linux:xfs-kern:23388a Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] streamline the clear_inode pathChristoph Hellwig2005-09-053-156/+25
| | | | | | | | SGI-PV: 940531 SGI-Modid: xfs-linux:xfs-kern:196888a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Delay I/O completion for unwritten extents after conversionChristoph Hellwig2005-09-052-2/+26
| | | | | | | | SGI-PV: 936584 SGI-Modid: xfs-linux:xfs-kern:196886a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Delay direct I/O completion to a workqueue This is nessecaryChristoph Hellwig2005-09-052-29/+48
| | | | | | | | | | | | | because aio+dio completions may happen from irq context but we need process context for converting unwritten extents. We also queue regular direct I/O completions to workqueue for regularity, there's only one queue_work call per syscall. SGI-PV: 934766 SGI-Modid: xfs-linux:xfs-kern:196857a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Add in the new xfs_aops.h header file for I/O completion struct.Christoph Hellwig2005-09-051-0/+49
| | | | | | | | SGI-PV: 934766 SGI-Modid: xfs-linux:xfs-kern:196857a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Add infrastructure for tracking I/O completionsChristoph Hellwig2005-09-024-85/+132
| | | | | | | | SGI-PV: 934766 SGI-Modid: xfs-linux:xfs-kern:196856a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] add infrastructure for waiting on I/O completion at inode reclaimChristoph Hellwig2005-09-024-58/+32
| | | | | | | | | | time SGI-PV: 934766 SGI-Modid: xfs-linux:xfs-kern:196854a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] remove unessecary vnode flagsChristoph Hellwig2005-09-023-73/+1
| | | | | | | | SGI-PV: 934766 SGI-Modid: xfs-linux:xfs-kern:196852a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Fix sparse warnings in kmem_* functions Patch from Victor FuscoChristoph Hellwig2005-09-023-23/+25
| | | | | | | | | | <victor@cetuc.puc-rio.br> SGI-PV: 940376 SGI-Modid: xfs-linux:xfs-kern:196705a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Need to unlock the AIL before calling xfs_force_shutdown() becauseTim Shimmin2005-09-021-1/+1
| | | | | | | | | | | when it goes to force out the log, and get the tail lsn, it will want to get the AIL lock. SGI-PV: 940076 SGI-Modid: xfs-linux:xfs-kern:23260a Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] remove struct vnode::v_typeChristoph Hellwig2005-09-028-85/+68
| | | | | | | | SGI-PV: 936236 SGI-Modid: xfs-linux:xfs-kern:195878a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Remove extraneous quotacheck diagnostics.Nathan Scott2005-09-021-10/+2
| | | | | | | SGI-PV: 907752 SGI-Modid: xfs-linux:xfs-kern:23163a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Add in grpid/nogrpid mount option parsing, actual code was alwaysNathan Scott2005-09-021-1/+15
| | | | | | | | | there.. SGI-PV: 939444 SGI-Modid: xfs-linux:xfs-kern:23162a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] 929956 add log debugging and tracing infoTim Shimmin2005-09-029-22/+265
| | | | | | | | SGI-PV: 931456 SGI-Modid: xfs-linux:xfs-kern:23155a Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Fix up the calculation of the reservation overhead to hopefullyTim Shimmin2005-09-021-13/+41
| | | | | | | | | | | | | | include all the components which make up the transaction in the ondisk log. Having this incomplete has shown up as problems on IRIX when some v2 log changes went in. The symptom was the msg of "xfs_log_write: reservation ran out. Need to up reservation" and was seen on synchronous writes on files with lots of holes (and therefore lots of extents). SGI-PV: 931457 SGI-Modid: xfs-linux:xfs-kern:23095a Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Fix regression in transaction reserved-block accounting for directNathan Scott2005-09-021-9/+8
| | | | | | | | | writes. SGI-PV: 938145 SGI-Modid: xfs-linux:xfs-kern:23088a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Fix check for writeable file in xfs_ioc_space ioctl codeEric Sandeen2005-09-021-1/+1
| | | | | | | | SGI-PV: 938905 SGI-Modid: xfs-linux:xfs-kern:195240a Signed-off-by: Eric Sandeen <sandeen@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Prevent the incore superblock sb_fdblocks count from leaking when weDavid Chinner2005-09-021-1/+11
| | | | | | | | | | | | are getting ENOSPC errors on writes. When we fail to allocate space for indirect blocks in xfs_bmapi() make sure we release the direct block allocation before returning. SGI-PV: 938502 SGI-Modid: xfs-linux:xfs-kern:22986a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Add a chunk of tracing code to diagnose truncate related issues.Nathan Scott2005-09-022-3/+15
| | | | | | | SGI-PV: 938410 SGI-Modid: xfs-linux:xfs-kern:22966a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Make metadata IO completion consistent with other IO completionNathan Scott2005-09-021-6/+11
| | | | | | | | | handlers. SGI-PV: 938409 SGI-Modid: xfs-linux:xfs-kern:22965a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] replace vn_get usage by iholdChristoph Hellwig2005-09-024-82/+15
| | | | | | | | SGI-PV: 938306 SGI-Modid: xfs-linux:xfs-kern:194627a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] send dmapi events from nopage for mmapped filesDean Roehrich2005-09-021-58/+32
| | | | | | | | SGI-PV: 935317 SGI-Modid: xfs-linux:xfs-kern:192007a Signed-off-by: Dean Roehrich <roehrich@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] upate copyrightsDean Roehrich2005-09-021-1/+1
| | | | | | | | SGI-PV: 933765 SGI-Modid: xfs-linux:xfs-kern:190760a Signed-off-by: Dean Roehrich <roehrich@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Update copyrightsDean Roehrich2005-09-021-1/+1
| | | | | | | | SGI-PV: 933551 SGI-Modid: xfs-linux:xfs-kern:190625a Signed-off-by: Dean Roehrich <roehrich@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [PATCH] Fix up symlink function pointersAl Viro2005-08-191-5/+5
| | | | | | | | | | This fixes up the symlink functions for the calling convention change: * afs, autofs4, befs, devfs, freevxfs, jffs2, jfs, ncpfs, procfs, smbfs, sysvfs, ufs, xfs - prototype change for ->follow_link() * befs, smbfs, xfs - same for ->put_link() Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Cleanup patch for process freezingChristoph Lameter2005-06-252-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. Establish a simple API for process freezing defined in linux/include/sched.h: frozen(process) Check for frozen process freezing(process) Check if a process is being frozen freeze(process) Tell a process to freeze (go to refrigerator) thaw_process(process) Restart process frozen_process(process) Process is frozen now 2. Remove all references to PF_FREEZE and PF_FROZEN from all kernel sources except sched.h 3. Fix numerous locations where try_to_freeze is manually done by a driver 4. Remove the argument that is no longer necessary from two function calls. 5. Some whitespace cleanup 6. Clear potential race in refrigerator (provides an open window of PF_FREEZE cleared before setting PF_FROZEN, recalc_sigpending does not check PF_FROZEN). This patch does not address the problem of freeze_processes() violating the rule that a task may only modify its own flags by setting PF_FREEZE. This is not clean in an SMP environment. freeze(process) is therefore not SMP safe! Signed-off-by: Christoph Lameter <christoph@lameter.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pass iocb to dio_iodone_tChristoph Hellwig2005-06-241-1/+2
| | | | | | | | | XFS will have to look at iocb->private to fix aio+dio. No other filesystem is using the blockdev_direct_IO* end_io callback. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge rsync://oss.sgi.com/git/xfs-2.6Linus Torvalds2005-06-2173-1107/+957
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| * [XFS] Handle inode semaphores properly for dmapi queuesDean Roehrich2005-06-222-13/+20
| | | | | | | | | | | | | | | | SGI-PV: 931572 SGI-Modid: xfs-linux-melb:xfs-kern:189560a Signed-off-by: Dean Roehrich <roehrich@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
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