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path: root/fs/xfs/linux-2.6/xfs_buf.c
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2006-02-01[PATCH] Direct Migration V9: Avoid writeback / page_migrate() methodChristoph Lameter
Migrate a page with buffers without requiring writeback This introduces a new address space operation migratepage() that may be used by a filesystem to implement its own version of page migration. A version is provided that migrates buffers attached to pages. Some filesystems (ext2, ext3, xfs) are modified to utilize this feature. The swapper address space operation are modified so that a regular migrate_page() will occur for anonymous pages without writeback (migrate_pages forces every anonymous page to have a swap entry). Signed-off-by: Mike Kravetz <kravetz@us.ibm.com> Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-01[XFS] Fix regression in xfs_buf_rele dealing with non-hashed buffers, asNathan Scott
occur during log replay. Novell bug 145204, Fedora bug 177848. SGI-PV: 948860 SGI-Modid: xfs-linux-melb:xfs-kern:25064a Signed-off-by: Nathan Scott <nathans@sgi.com>
2006-01-11[XFS] Fix up offset type inconsistencies and gcc warnings from earlierNathan Scott
changes. SGI-PV: 947038 SGI-Modid: xfs-linux-melb:xfs-kern:24875a Signed-off-by: Nathan Scott <nathans@sgi.com>
2006-01-11[XFS] fix up per-device xfsbufdChristoph Hellwig
SGI-PV: 947098 SGI-Modid: xfs-linux-melb:xfs-kern:203831a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2006-01-11[XFS] Complete the pagebuf -> xfs_buf naming convention transition,Nathan Scott
finally. SGI-PV: 947038 SGI-Modid: xfs-linux-melb:xfs-kern:24866a Signed-off-by: Nathan Scott <nathans@sgi.com>
2006-01-11[XFS] Introduce per-filesystem delwri pagebuf flushing to reduceDavid Chinner
contention between filesystems and prevent deadlocks between filesystems when a flush dependency exists between them. SGI-PV: 947098 SGI-Modid: xfs-linux-melb:xfs-kern:24844a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-04[XFS] Remove no-longer-used qsort source.Nathan Scott
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02[XFS] Simplify pagebuf_rele Remove a conditional that can not be trueChristoph Hellwig
anymore and simplify the final put path a little SGI-PV: 908809 SGI-Modid: xfs-linux:xfs-kern:200790a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02[XFS] Update license/copyright notices to match the prefered SGINathan Scott
boilerplate. SGI-PV: 913862 SGI-Modid: xfs-linux:xfs-kern:23903a Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02[XFS] only mark buffers done when all pages are uptodate in additionChristoph Hellwig
replace PBF_NONE with an inverted PBF_DONE, so it's like all the other flags. SGI-PV: 942609 SGI-Modid: xfs-linux:xfs-kern:199136a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02[XFS] write barrier support Issue all log sync operations as orderedChristoph Hellwig
writes. In addition flush the disk cache on fsync if the sync cached operation didn't sync the log to disk (this requires some additional bookeping in the transaction and log code). If the device doesn't claim to support barriers, the filesystem has an extern log volume or the trial superblock write with barriers enabled failed we disable barriers and print a warning. We should probably fail the mount completely, but that could lead to nasty boot failures for the root filesystem. Not enabled by default yet, needs more destructive testing first. SGI-PV: 912426 SGI-Modid: xfs-linux:xfs-kern:198723a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02[XFS] fix PBF_NONE handlingChristoph Hellwig
SGI-PV: 908809 SGI-Modid: xfs-linux:xfs-kern:198669a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02[XFS] remove unused pagebuf flagsChristoph Hellwig
SGI-PV: 908809 SGI-Modid: xfs-linux:xfs-kern:198656a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02[XFS] Make sure the threads and shaker in xfs_buf are de-initialized inChristoph Hellwig
reverse startup order SGI-PV: 942063 SGI-Modid: xfs-linux:xfs-kern:198651a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-10-29[PATCH] mm: split page table lockHugh Dickins
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>
2005-10-28[PATCH] gfp_t: fs/*Al Viro
- ->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>
2005-09-10[PATCH] fs: fix-up schedule_timeout() usageNishanth Aravamudan
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>
2005-09-05[XFS] Switch kernel thread handling to the kthread_ APIChristoph Hellwig
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>
2005-09-05[XFS] Fix racy access to pb_flags. pagebuf_rele() modified pb_flags afterDavid Chinner
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>
2005-09-05[XFS] remove some dead code from pagebufChristoph Hellwig
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>
2005-09-02[XFS] Add infrastructure for tracking I/O completionsChristoph Hellwig
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>
2005-09-02[XFS] Make metadata IO completion consistent with other IO completionNathan Scott
handlers. SGI-PV: 938409 SGI-Modid: xfs-linux:xfs-kern:22965a Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-06-25[PATCH] Cleanup patch for process freezingChristoph Lameter
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>
2005-06-21[XFS] remove xfs_incore_relseChristoph Hellwig
SGI-PV: 936977 SGI-Modid: xfs-linux:xfs-kern:193409a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-06-21[XFS] Fix pagebuf slab initializationChristoph Hellwig
SGI-PV: 908809 SGI-Modid: xfs-linux:xfs-kern:192756a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-06-21[XFS] rename various pagebuf symbols to xfsbufChristoph Hellwig
SGI-PV: 908809 SGI-Modid: xfs-linux:xfs-kern:192348a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-05-05[XFS] Resolve an issue with xfsbufd not getting along with swsusp.Nathan Scott
SGI Modid: xfs-linux:xfs-kern:22342a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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