- 08 4月, 2014 3 次提交
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由 Fabian Frederick 提交于
Normal behavior for filenames exceeding specific filesystem limits is to refuse operation. AFFS standard name length being only 30 characters against 255 for usual Linux filesystems, original implementation does filename truncate by default with a define value AFFS_NO_TRUNCATE which can be enabled but needs module compilation. This patch adds 'nofilenametruncate' mount option so that user can easily activate that feature and avoid a lot of problems (eg overwrite files ...) Signed-off-by: NFabian Frederick <fabf@skynet.be> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andrey Vagin 提交于
Currently we don't have a way how to determing from which mount point file has been opened. This information is required for proper dumping and restoring file descriptos due to presence of mount namespaces. It's possible, that two file descriptors are opened using the same paths, but one fd references mount point from one namespace while the other fd -- from other namespace. $ ls -l /proc/1/fd/1 lrwx------ 1 root root 64 Mar 19 23:54 /proc/1/fd/1 -> /dev/null $ cat /proc/1/fdinfo/1 pos: 0 flags: 0100002 mnt_id: 16 $ cat /proc/1/mountinfo | grep ^16 16 32 0:4 / /dev rw,nosuid shared:2 - devtmpfs devtmpfs rw,size=1013356k,nr_inodes=253339,mode=755 Signed-off-by: NAndrey Vagin <avagin@openvz.org> Acked-by: NPavel Emelyanov <xemul@parallels.com> Acked-by: NCyrill Gorcunov <gorcunov@openvz.org> Cc: Rob Landley <rob@landley.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Oleg Nesterov <oleg@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Kirill A. Shutemov 提交于
Here's new version of faultaround patchset. It took a while to tune it and collect performance data. First patch adds new callback ->map_pages to vm_operations_struct. ->map_pages() is called when VM asks to map easy accessible pages. Filesystem should find and map pages associated with offsets from "pgoff" till "max_pgoff". ->map_pages() is called with page table locked and must not block. If it's not possible to reach a page without blocking, filesystem should skip it. Filesystem should use do_set_pte() to setup page table entry. Pointer to entry associated with offset "pgoff" is passed in "pte" field in vm_fault structure. Pointers to entries for other offsets should be calculated relative to "pte". Currently VM use ->map_pages only on read page fault path. We try to map FAULT_AROUND_PAGES a time. FAULT_AROUND_PAGES is 16 for now. Performance data for different FAULT_AROUND_ORDER is below. TODO: - implement ->map_pages() for shmem/tmpfs; - modify get_user_pages() to be able to use ->map_pages() and implement mmap(MAP_POPULATE|MAP_NONBLOCK) on top. ========================================================================= Tested on 4-socket machine (120 threads) with 128GiB of RAM. Few real-world workloads. The sweet spot for FAULT_AROUND_ORDER here is somewhere between 3 and 5. Let's say 4 :) Linux build (make -j60) FAULT_AROUND_ORDER Baseline 1 3 4 5 7 9 minor-faults 283,301,572 247,151,987 212,215,789 204,772,882 199,568,944 194,703,779 193,381,485 time, seconds 151.227629483 153.920996480 151.356125472 150.863792049 150.879207877 151.150764954 151.450962358 Linux rebuild (make -j60) FAULT_AROUND_ORDER Baseline 1 3 4 5 7 9 minor-faults 5,396,854 4,148,444 2,855,286 2,577,282 2,361,957 2,169,573 2,112,643 time, seconds 27.404543757 27.559725591 27.030057426 26.855045126 26.678618635 26.974523490 26.761320095 Git test suite (make -j60 test) FAULT_AROUND_ORDER Baseline 1 3 4 5 7 9 minor-faults 129,591,823 99,200,751 66,106,718 57,606,410 51,510,808 45,776,813 44,085,515 time, seconds 66.087215026 64.784546905 64.401156567 65.282708668 66.034016829 66.793780811 67.237810413 Two synthetic tests: access every word in file in sequential/random order. It doesn't improve much after FAULT_AROUND_ORDER == 4. Sequential access 16GiB file FAULT_AROUND_ORDER Baseline 1 3 4 5 7 9 1 thread minor-faults 4,195,437 2,098,275 525,068 262,251 131,170 32,856 8,282 time, seconds 7.250461742 6.461711074 5.493859139 5.488488147 5.707213983 5.898510832 5.109232856 8 threads minor-faults 33,557,540 16,892,728 4,515,848 2,366,999 1,423,382 442,732 142,339 time, seconds 16.649304881 9.312555263 6.612490639 6.394316732 6.669827501 6.75078944 6.371900528 32 threads minor-faults 134,228,222 67,526,810 17,725,386 9,716,537 4,763,731 1,668,921 537,200 time, seconds 49.164430543 29.712060103 12.938649729 10.175151004 11.840094583 9.594081325 9.928461797 60 threads minor-faults 251,687,988 126,146,952 32,919,406 18,208,804 10,458,947 2,733,907 928,217 time, seconds 86.260656897 49.626551828 22.335007632 17.608243696 16.523119035 16.339489186 16.326390902 120 threads minor-faults 503,352,863 252,939,677 67,039,168 35,191,827 19,170,091 4,688,357 1,471,862 time, seconds 124.589206333 79.757867787 39.508707872 32.167281632 29.972989292 28.729834575 28.042251622 Random access 1GiB file 1 thread minor-faults 262,636 132,743 34,369 17,299 8,527 3,451 1,222 time, seconds 15.351890914 16.613802482 16.569227308 15.179220992 16.557356122 16.578247824 15.365266994 8 threads minor-faults 2,098,948 1,061,871 273,690 154,501 87,110 25,663 7,384 time, seconds 15.040026343 15.096933500 14.474757288 14.289129964 14.411537468 14.296316837 14.395635804 32 threads minor-faults 8,390,734 4,231,023 1,054,432 528,847 269,242 97,746 26,881 time, seconds 20.430433109 21.585235358 22.115062928 14.872878951 14.880856305 14.883370649 14.821261690 60 threads minor-faults 15,733,258 7,892,809 1,973,393 988,266 594,789 164,994 51,691 time, seconds 26.577302548 25.692397770 18.728863715 20.153026398 21.619101933 17.745086260 17.613215273 120 threads minor-faults 31,471,111 15,816,616 3,959,209 1,978,685 1,008,299 264,635 96,010 time, seconds 41.835322703 40.459786095 36.085306105 35.313894834 35.814445675 36.552633793 34.289210594 Touch only one page in page table in 16GiB file FAULT_AROUND_ORDER Baseline 1 3 4 5 7 9 1 thread minor-faults 8,372 8,324 8,270 8,260 8,249 8,239 8,237 time, seconds 0.039892712 0.045369149 0.051846126 0.063681685 0.079095975 0.17652406 0.541213386 8 threads minor-faults 65,731 65,681 65,628 65,620 65,608 65,599 65,596 time, seconds 0.124159196 0.488600638 0.156854426 0.191901957 0.242631486 0.543569456 1.677303984 32 threads minor-faults 262,388 262,341 262,285 262,276 262,266 262,257 263,183 time, seconds 0.452421421 0.488600638 0.565020946 0.648229739 0.789850823 1.651584361 5.000361559 60 threads minor-faults 491,822 491,792 491,723 491,711 491,701 491,691 491,825 time, seconds 0.763288616 0.869620515 0.980727360 1.161732354 1.466915814 3.04041448 9.308612938 120 threads minor-faults 983,466 983,655 983,366 983,372 983,363 984,083 984,164 time, seconds 1.595846553 1.667902182 2.008959376 2.425380942 2.941368804 5.977807890 18.401846125 This patch (of 2): Introduce new vm_ops callback ->map_pages() and uses it for mapping easy accessible pages around fault address. On read page fault, if filesystem provides ->map_pages(), we try to map up to FAULT_AROUND_PAGES pages around page fault address in hope to reduce number of minor page faults. We call ->map_pages first and use ->fault() as fallback if page by the offset is not ready to be mapped (cold page cache or something). Signed-off-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: NLinus Torvalds <torvalds@linux-foundation.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <david@fromorbit.com> Cc: Ning Qu <quning@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 07 4月, 2014 1 次提交
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由 Jaegeuk Kim 提交于
Some storage devices show relatively high latencies to complete cache_flush commands, even though their normal IO speed is prettry much high. In such the case, it needs to merge cache_flush commands as much as possible to avoid issuing them redundantly. So, this patch introduces a mount option, "-o flush_merge", to mitigate such the overhead. If this option is enabled by user, F2FS merges the cache_flush commands and then issues just one cache_flush on behalf of them. Once the single command is finished, F2FS sends a completion signal to all the pending threads. Note that, this option can be used under a workload consisting of very intensive concurrent fsync calls, while the storage handles cache_flush commands slowly. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 04 4月, 2014 4 次提交
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由 Fabian Frederick 提交于
File was removed in commit 7c821a17 ("Remove fs/ntfs/ChangeLog"). Signed-off-by: NFabian Frederick <fabf@skynet.be> Acked-by: NAnton Altaparmakov <anton@tuxera.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ryusuke Konishi 提交于
Project's web site was moved to nilfs.sourceforge.net from www.nilfs.org. This updates the site information in Documentation/filesystems/nilfs2.txt with the new location. Signed-off-by: NRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andreas Rohner 提交于
With this ioctl the segment usage entries in the SUFILE can be updated from userspace. This is useful, because it allows the userspace GC to modify and update segment usage entries for specific segments, which enables it to avoid unnecessary write operations. If a segment needs to be cleaned, but there is no or very little reclaimable space in it, the cleaning operation basically degrades to a useless moving operation. In the end the only thing that changes is the location of the data and a timestamp in the segment usage information. With this ioctl the GC can skip the cleaning and update the segment usage entries directly instead. This is basically a shortcut to cleaning the segment. It is still necessary to read the segment summary information, but the writing of the live blocks can be skipped if it's not worth it. [konishi.ryusuke@lab.ntt.co.jp: add description of NILFS_IOCTL_SET_SUINFO ioctl] Signed-off-by: NAndreas Rohner <andreas.rohner@gmx.net> Signed-off-by: NRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Johannes Weiner 提交于
Reclaim will be leaving shadow entries in the page cache radix tree upon evicting the real page. As those pages are found from the LRU, an iput() can lead to the inode being freed concurrently. At this point, reclaim must no longer install shadow pages because the inode freeing code needs to ensure the page tree is really empty. Add an address_space flag, AS_EXITING, that the inode freeing code sets under the tree lock before doing the final truncate. Reclaim will check for this flag before installing shadow pages. Signed-off-by: NJohannes Weiner <hannes@cmpxchg.org> Reviewed-by: NRik van Riel <riel@redhat.com> Reviewed-by: NMinchan Kim <minchan@kernel.org> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Bob Liu <bob.liu@oracle.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Dave Chinner <david@fromorbit.com> Cc: Greg Thelen <gthelen@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jan Kara <jack@suse.cz> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Luigi Semenzato <semenzato@google.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Metin Doslu <metin@citusdata.com> Cc: Michel Lespinasse <walken@google.com> Cc: Ozgun Erdogan <ozgun@citusdata.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Roman Gushchin <klamm@yandex-team.ru> Cc: Ryan Mallon <rmallon@gmail.com> Cc: Tejun Heo <tj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 02 4月, 2014 1 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 01 4月, 2014 1 次提交
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由 Miklos Szeredi 提交于
Add new renameat2 syscall, which is the same as renameat with an added flags argument. Pass flags to vfs_rename() and to i_op->rename() as well. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz> Reviewed-by: NJ. Bruce Fields <bfields@redhat.com>
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- 21 3月, 2014 1 次提交
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由 Masanari Iida 提交于
Fix double words "the the" in various files within Documentations. Signed-off-by: NMasanari Iida <standby24x7@gmail.com> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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- 20 3月, 2014 2 次提交
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由 Jaegeuk Kim 提交于
It is more reasonable to determine the reclaiming rate of prefree segments according to the volume size, which is set to 5% by default. For example, if the volume is 128GB, the prefree segments are reclaimed when the number reaches to 6.4GB. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch introduces ram_thresh, a sysfs entry, which controls the memory footprint used by the free nid list and the nat cache. Previously, the free nid list was controlled by MAX_FREE_NIDS, while the nat cache was managed by NM_WOUT_THRESHOLD. However, this approach cannot be applied dynamically according to the system. So, this patch adds ram_thresh that users can specify the threshold, which is in order of 1 / 1024. For example, if the total ram size is 4GB and the value is set to 10 by default, f2fs tries to control the number of free nids and nat caches not to consume over 10 * (4GB / 1024) = 10MB. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 27 2月, 2014 2 次提交
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由 Jaegeuk Kim 提交于
This patch adds an sysfs entry to control dir_level used by the large directory. The description of this entry is: dir_level This parameter controls the directory level to support large directory. If a directory has a number of files, it can reduce the file lookup latency by increasing this dir_level value. Otherwise, it needs to decrease this value to reduce the space overhead. The default value is 0. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch introduces an i_dir_level field to support large directory. Previously, f2fs maintains multi-level hash tables to find a dentry quickly from a bunch of chiild dentries in a directory, and the hash tables consist of the following tree structure as below. In Documentation/filesystems/f2fs.txt, ---------------------- A : bucket B : block N : MAX_DIR_HASH_DEPTH ---------------------- level #0 | A(2B) | level #1 | A(2B) - A(2B) | level #2 | A(2B) - A(2B) - A(2B) - A(2B) . | . . . . level #N/2 | A(2B) - A(2B) - A(2B) - A(2B) - A(2B) - ... - A(2B) . | . . . . level #N | A(4B) - A(4B) - A(4B) - A(4B) - A(4B) - ... - A(4B) But, if we can guess that a directory will handle a number of child files, we don't need to traverse the tree from level #0 to #N all the time. Since the lower level tables contain relatively small number of dentries, the miss ratio of the target dentry is likely to be high. In order to avoid that, we can configure the hash tables sparsely from level #0 like this. level #0 | A(2B) - A(2B) - A(2B) - A(2B) level #1 | A(2B) - A(2B) - A(2B) - A(2B) - A(2B) - ... - A(2B) . | . . . . level #N/2 | A(2B) - A(2B) - A(2B) - A(2B) - A(2B) - ... - A(2B) . | . . . . level #N | A(4B) - A(4B) - A(4B) - A(4B) - A(4B) - ... - A(4B) With this structure, we can skip the ineffective tree searches in lower level hash tables. This patch adds just a facility for this by introducing i_dir_level in f2fs_inode. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 20 2月, 2014 1 次提交
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由 Olaf Hering 提交于
Signed-off-by: NOlaf Hering <olaf@aepfle.de> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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- 11 2月, 2014 1 次提交
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由 Henrik Austad 提交于
Some of the 00-INDEX files are somewhat outdated and some folders does not contain 00-INDEX at all. Only outdated (with the notably exception of spi) indexes are touched here, the 169 folders without 00-INDEX has not been touched. New 00-INDEX - spi/* was added in a series of commits dating back to 2006 Added files (missing in (*/)00-INDEX) - dmatest.txt was added by commit 851b7e16 ("dmatest: run test via debugfs") - this_cpu_ops.txt was added by commit a1b2a555 ("percpu: add documentation on this_cpu operations") - ww-mutex-design.txt was added by commit 040a0a37 ("mutex: Add support for wound/wait style locks") - bcache.txt was added by commit cafe5635 ("bcache: A block layer cache") - kernel-per-CPU-kthreads.txt was added by commit 49717cb4 ("kthread: Document ways of reducing OS jitter due to per-CPU kthreads") - phy.txt was added by commit ff764963 ("drivers: phy: add generic PHY framework") - block/null_blk was added by commit 12f8f4fc ("null_blk: documentation") - module-signing.txt was added by commit 3cafea30 ("Add Documentation/module-signing.txt file") - assoc_array.txt was added by commit 3cb98950 ("Add a generic associative array implementation.") - arm/IXP4xx was part of the initial repo - arm/cluster-pm-race-avoidance.txt was added by commit 7fe31d28 ("ARM: mcpm: introduce helpers for platform coherency exit/setup") - arm/firmware.txt was added by commit 7366b92a ("ARM: Add interface for registering and calling firmware-specific operations") - arm/kernel_mode_neon.txt was added by commit 2afd0a05 ("ARM: 7825/1: document the use of NEON in kernel mode") - arm/tcm.txt was added by commit bc581770 ("ARM: 5580/2: ARM TCM (Tightly-Coupled Memory) support v3") - arm/vlocks.txt was added by commit 9762f12d ("ARM: mcpm: Add baremetal voting mutexes") - blackfin/gptimers-example.c, Makefile was added by commit 4b60779d ("Blackfin: add an example showing how to use the gptimers API") - devicetree/usage-model.txt was added by commit 31134efc ("dt: Linux DT usage model documentation") - fb/api.txt was added by commit fb21c2f4 ("fbdev: Add FOURCC-based format configuration API") - fb/sm501.txt was added by commit e6a04980 ("video, sm501: add edid and commandline support") - fb/udlfb.txt was added by commit 96f8d864 ("fbdev: move udlfb out of staging.") - filesystems/Makefile was added by commit 1e0051ae ("Documentation/fs/: split txt and source files") - filesystems/nfs/nfsd-admin-interfaces.txt was added by commit 8a4c6e19 ("nfsd: document kernel interfaces for nfsd configuration") - ide/warm-plug-howto.txt was added by commit f74c9141 ("ide: add warm-plug support for IDE devices (take 2)") - laptops/Makefile was added by commit d49129ac ("Documentation/laptop/: split txt and source files") - leds/leds-blinkm.txt was added by commit b54cf35a ("LEDS: add BlinkM RGB LED driver, documentation and update MAINTAINERS") - leds/ledtrig-oneshot.txt was added by commit 5e417281 ("leds: add oneshot trigger") - leds/ledtrig-transient.txt was added by commit 44e1e9f8 ("leds: add new transient trigger for one shot timer activation") - m68k/README.buddha was part of the initial repo - networking/LICENSE.(qla3xxx|qlcnic|qlge) was added by commits 40839129, c4e84bde, 5a4faa87 - networking/Makefile was added by commit 3794f3e8 ("docsrc: build Documentation/ sources") - networking/i40evf.txt was added by commit 105bf2fe ("i40evf: add driver to kernel build system") - networking/ipsec.txt was added by commit b3c6efbc ("xfrm: Add file to document IPsec corner case") - networking/mac80211-auth-assoc-deauth.txt was added by commit 3cd7920a ("mac80211: add auth/assoc/deauth flow diagram") - networking/netlink_mmap.txt was added by commit 5683264c ("netlink: add documentation for memory mapped I/O") - networking/nf_conntrack-sysctl.txt was added by commit c9f9e0e1 ("netfilter: doc: add nf_conntrack sysctl api documentation") lan) - networking/team.txt was added by commit 3d249d4c ("net: introduce ethernet teaming device") - networking/vxlan.txt was added by commit d342894c ("vxlan: virtual extensible lan") - power/runtime_pm.txt was added by commit 5e928f77 ("PM: Introduce core framework for run-time PM of I/O devices (rev. 17)") - power/charger-manager.txt was added by commit 3bb3dbbd ("power_supply: Add initial Charger-Manager driver") - RCU/lockdep-splat.txt was added by commit d7bd2d68 ("rcu: Document interpretation of RCU-lockdep splats") - s390/kvm.txt was added by 5ecee4ba (KVM: s390: API documentation) - s390/qeth.txt was added by commit b4d72c08 ("qeth: bridgeport support - basic control") - scheduler/sched-bwc.txt was added by commit 88ebc08e ("sched: Add documentation for bandwidth control") - scsi/advansys.txt was added by commit 4bd6d7f3 ("[SCSI] advansys: Move documentation to Documentation/scsi") - scsi/bfa.txt was added by commit 1ec90174 ("[SCSI] bfa: add readme file") - scsi/bnx2fc.txt was added by commit 12b8fc10 ("[SCSI] bnx2fc: Add driver documentation") - scsi/cxgb3i.txt was added by commit c3673464 ("[SCSI] cxgb3i: Add cxgb3i iSCSI driver.") - scsi/hpsa.txt was added by commit 992ebcf1 ("[SCSI] hpsa: Add hpsa.txt to Documentation/scsi") - scsi/link_power_management_policy.txt was added by commit ca77329f ("[libata] Link power management infrastructure") - scsi/osd.txt was added by commit 78e0c621 ("[SCSI] osd: Documentation for OSD library") - scsi/scsi-parameter.txt was created/moved by commit 163475fb ("Documentation: move SCSI parameters to their own text file") - serial/driver was part of the initial repo - serial/n_gsm.txt was added by commit 323e8412 ("n_gsm: add a documentation") - timers/Makefile was added by commit 3794f3e8 ("docsrc: build Documentation/ sources") - virt/kvm/s390.txt was added by commit d9101fca ("KVM: s390: diagnose call documentation") - vm/split_page_table_lock was added by commit 49076ec2 ("mm: dynamically allocate page->ptl if it cannot be embedded to struct page") - w1/slaves/w1_ds28e04 was added by commit fbf7f7b4 ("w1: Add 1-wire slave device driver for DS28E04-100") - w1/masters/omap-hdq was added by commit e0a29382 ("hdq: documentation for OMAP HDQ") - x86/early-microcode.txt was added by commit 0d91ea86 ("x86, doc: Documentation for early microcode loading") - x86/earlyprintk.txt was added by commit a1aade47 ("x86/doc: mini-howto for using earlyprintk=dbgp") - x86/entry_64.txt was added by commit 8b4777a4 ("x86-64: Document some of entry_64.S") - x86/pat.txt was added by commit d27554d8 ("x86: PAT documentation") Moved files - arm/kernel_user_helpers.txt was moved out of arch/arm/kernel by commit 37b83046 ("ARM: kuser: move interface documentation out of the source code") - efi-stub.txt was moved out of x86/ and down into Documentation/ in commit 4172fe2f ("EFI stub documentation updates") - laptops/hpfall.c was moved out of hwmon/ and into laptops/ in commit efcfed9b ("Move hp_accel to drivers/platform/x86") - commit 5616c23a ("x86: doc: move x86-generic documentation from Doc/x86/i386"): * x86/usb-legacy-support.txt * x86/boot.txt * x86/zero_page.txt - power/video_extension.txt was moved to acpi in commit 70e66e4d ("ACPI / video: move video_extension.txt to Documentation/acpi") Removed files (left in 00-INDEX) - memory.txt was removed by commit 00ea8990 ("memory.txt: remove stray information") - gpio.txt was moved to gpio/ in commit fd8e198c ("Documentation: gpiolib: document new interface") - networking/DLINK.txt was removed by commit 168e06ae ("drivers/net: delete old parallel port de600/de620 drivers") - serial/hayes-esp.txt was removed by commit f53a2ade ("tty: esp: remove broken driver") - s390/TAPE was removed by commit 9e280f66 ("[S390] remove tape block docu") - vm/locking was removed by commit 57ea8171 ("mm: documentation: remove hopelessly out-of-date locking doc") - laptops/acer-wmi.txt was remvoed by commit 02003667 ("acer-wmi: Delete out-of-date documentation") Typos/misc issues - rpc-server-gss.txt was added as knfsd-rpcgss.txt in commit 030d794b ("SUNRPC: Use gssproxy upcall for server RPCGSS authentication.") - commit b88cf73d ("net: add missing entries to Documentation/networking/00-INDEX") * generic-hdlc.txt was added as generic_hdlc.txt * spider_net.txt was added as spider-net.txt - w1/master/mxc-w1 was added as mxc_w1 by commit a5fd9139 ("w1: add 1-wire master driver for i.MX27 / i.MX31") - s390/zfcpdump.txt was added as zfcpdump by commit 6920c12a ("[S390] Add Documentation/s390/00-INDEX.") Signed-off-by: NHenrik Austad <henrik@austad.us> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> [rcu bits] Acked-by: NRob Landley <rob@landley.net> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Rob Herring <robh+dt@kernel.org> Cc: David S. Miller <davem@davemloft.net> Cc: Mark Brown <broonie@kernel.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Gleb Natapov <gleb@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Len Brown <len.brown@intel.com> Cc: James Bottomley <JBottomley@parallels.com> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 31 1月, 2014 2 次提交
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由 Richard Yao 提交于
->readv, ->writev and ->sendfile have been removed while ->show_fdinfo has been added. The documentation should reflect this. Signed-off-by: NRichard Yao <ryao@gentoo.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Rientjes 提交于
A 3% of system memory bonus is sometimes too excessive in comparison to other processes. With commit a63d83f4 ("oom: badness heuristic rewrite"), the OOM killer tries to avoid killing privileged tasks by subtracting 3% of overall memory (system or cgroup) from their per-task consumption. But as a result, all root tasks that consume less than 3% of overall memory are considered equal, and so it only takes 33+ privileged tasks pushing the system out of memory for the OOM killer to do something stupid and kill dhclient or other root-owned processes. For example, on a 32G machine it can't tell the difference between the 1M agetty and the 10G fork bomb member. The changelog describes this 3% boost as the equivalent to the global overcommit limit being 3% higher for privileged tasks, but this is not the same as discounting 3% of overall memory from _every privileged task individually_ during OOM selection. Replace the 3% of system memory bonus with a 3% of current memory usage bonus. By giving root tasks a bonus that is proportional to their actual size, they remain comparable even when relatively small. In the example above, the OOM killer will discount the 1M agetty's 256 badness points down to 179, and the 10G fork bomb's 262144 points down to 183500 points and make the right choice, instead of discounting both to 0 and killing agetty because it's first in the task list. Signed-off-by: NDavid Rientjes <rientjes@google.com> Reported-by: NJohannes Weiner <hannes@cmpxchg.org> Acked-by: NJohannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: <stable@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 29 1月, 2014 9 次提交
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由 Qu Wenruo 提交于
Add treelog mount option to enable tree log with remount option. Signed-off-by: NQu Wenruo <quwenruo@cn.fujitsu.com> Reviewed-by: NDavid Sterba <dsterba@suse.cz> Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NChris Mason <clm@fb.com>
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由 Qu Wenruo 提交于
Add datasum mount option to enable checksum with remount option. Signed-off-by: NQu Wenruo <quwenruo@cn.fujitsu.com> Reviewed-by: NDavid Sterba <dsterba@suse.cz> Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NChris Mason <clm@fb.com>
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由 Qu Wenruo 提交于
Add datacow mount option to enable copy-on-write with remount option. Signed-off-by: NQu Wenruo <quwenruo@cn.fujitsu.com> Reviewed-by: NDavid Sterba <dsterba@suse.cz> Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NChris Mason <clm@fb.com>
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由 Qu Wenruo 提交于
Add acl mount option to enable acl with remount option. Signed-off-by: NQu Wenruo <quwenruo@cn.fujitsu.com> Reviewed-by: NDavid Sterba <dsterba@suse.cz> Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NChris Mason <clm@fb.com>
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由 Qu Wenruo 提交于
Add noflushoncommit mount option to disable flush on commit with remount option. Signed-off-by: NQu Wenruo <quwenruo@cn.fujitsu.com> Reviewed-by: NDavid Sterba <dsterba@suse.cz> Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NChris Mason <clm@fb.com>
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由 Qu Wenruo 提交于
Add noenospc_debug mount option to disable ENOSPC debug with remount option. Signed-off-by: NQu Wenruo <quwenruo@cn.fujitsu.com> Reviewed-by: NDavid Sterba <dsterba@suse.cz> Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NChris Mason <clm@fb.com>
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由 Qu Wenruo 提交于
Add nodiscard mount option to disable discard with remount option. Signed-off-by: NQu Wenruo <quwenruo@cn.fujitsu.com> Reviewed-by: NDavid Sterba <dsterba@suse.cz> Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NChris Mason <clm@fb.com>
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由 Qu Wenruo 提交于
Btrfs has autodefrag mount option but no pairing noautodefrag option, which makes it impossible to disable autodefrag without umount. Signed-off-by: NQu Wenruo <quwenruo@cn.fujitsu.com> Reviewed-by: NDavid Sterba <dsterba@suse.cz> Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NChris Mason <clm@fb.com>
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由 Qu Wenruo 提交于
Btrfs can be remounted without barrier, but there is no "barrier" option so nobody can remount btrfs back with barrier on. Only umount and mount again can re-enable barrier.(Quite awkward) Also the mount options in the document is also changed slightly for the further pairing options changes. Reported-by: NDaniel Blueman <daniel@quora.org> Signed-off-by: NQu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: NMike Fleetwood <mike.fleetwood@googlemail.com> Reviewed-by: NDavid Sterba <dsterba@suse.cz> Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NChris Mason <clm@fb.com>
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- 25 1月, 2014 1 次提交
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由 Eric Van Hensbergen 提交于
quick pass to update the documentation to include instructions for the new cache=mmap mode as well as clean up some out-of-date bits. Signed-off-by: NEric Van Hensbergen <ericvh@gmail.com>
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- 24 1月, 2014 3 次提交
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由 Fabian Frederick 提交于
Add the following documentation-files with description : -autofs4-mount-control.txt -btrfs.txt -debugfs.txt -devpts.txt -fiemap.txt -gfs2-glocks.txt -gfs2-uevents.txt -omfs.txt -path-lookup.txt -qnx6.txt -quota.txt -squashfs.txt -sysfs-tagging.txt -ubifs.txt -xfs-delayed-logging-design.txt -xfs-self-describing-metadata.txt Add the following documentation directories with description : -caching -cifs (replacing cifs.txt) -pohmelfs Remove the following documentation-files reference: -dentry-locking.txt -reiser4.txt Signed-off-by: NFabian Frederick <fabf@skynet.be> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andre Richter 提交于
Fix a wrong device_attribute declaration example. Signed-off-by: NAndre Richter <andre.o.richter@gmail.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Vyacheslav Dubeyko 提交于
Add comments for ioctls in fs/nilfs2/ioctl.c file and describe NILFS2 specific ioctls in Documentation/filesystems/nilfs2.txt. Signed-off-by: NVyacheslav Dubeyko <slava@dubeyko.com> Reviewed-by: NRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: Wenliang Fan <fanwlexca@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 22 1月, 2014 1 次提交
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由 Rik van Riel 提交于
Many load balancing and workload placing programs check /proc/meminfo to estimate how much free memory is available. They generally do this by adding up "free" and "cached", which was fine ten years ago, but is pretty much guaranteed to be wrong today. It is wrong because Cached includes memory that is not freeable as page cache, for example shared memory segments, tmpfs, and ramfs, and it does not include reclaimable slab memory, which can take up a large fraction of system memory on mostly idle systems with lots of files. Currently, the amount of memory that is available for a new workload, without pushing the system into swap, can be estimated from MemFree, Active(file), Inactive(file), and SReclaimable, as well as the "low" watermarks from /proc/zoneinfo. However, this may change in the future, and user space really should not be expected to know kernel internals to come up with an estimate for the amount of free memory. It is more convenient to provide such an estimate in /proc/meminfo. If things change in the future, we only have to change it in one place. Signed-off-by: NRik van Riel <riel@redhat.com> Reported-by: NErik Mouw <erik.mouw_2@nxp.com> Acked-by: NJohannes Weiner <hannes@cmpxchg.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 09 1月, 2014 1 次提交
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由 Jaegeuk Kim 提交于
This patch adds missing some description of sysfs entries in - Documentation/ABI/testing/sysfs-fs-f2fs - Documentation/filesystems/f2fs.txt. And it adds a maintained document entry of F2FS in MAINTAINERS. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 02 1月, 2014 1 次提交
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由 Rob Landley 提交于
/proc/uptime has two fields, update description to describe both ala http://lkml.indiana.edu/hypermail/linux/kernel/1312.3/01454.htmlSigned-off-by: NRob Landley <rob@landley.net> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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- 26 12月, 2013 1 次提交
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由 Huajun Li 提交于
This patch describes the inline_data support in f2fs document. Signed-off-by: NHuajun Li <huajun.li@intel.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 23 12月, 2013 2 次提交
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由 Jaegeuk Kim 提交于
This patch adds a description about small_disacrds in the f2fs document. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch introduces new sysfs entries for users to control the policy of in-place-updates, namely IPU, in f2fs. Sometimes f2fs suffers from performance degradation due to its out-of-place update policy that produces many additional node block writes. If the storage performance is very dependant on the amount of data writes instead of IO patterns, we'd better drop this out-of-place update policy. This patch suggests 5 polcies and their triggering conditions as follows. [sysfs entry name = ipu_policy] 0: F2FS_IPU_FORCE all the time, 1: F2FS_IPU_SSR if SSR mode is activated, 2: F2FS_IPU_UTIL if FS utilization is over threashold, 3: F2FS_IPU_SSR_UTIL if SSR mode is activated and FS utilization is over threashold, 4: F2FS_IPU_DISABLE disable IPU. (=default option) [sysfs entry name = min_ipu_util] This parameter controls the threshold to trigger in-place-updates. The number indicates percentage of the filesystem utilization, and used by F2FS_IPU_UTIL and F2FS_IPU_SSR_UTIL policies. For more details, see need_inplace_update() in segment.h. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 19 12月, 2013 1 次提交
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由 Stefan Weil 提交于
Signed-off-by: NStefan Weil <sw@weilnetz.de> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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- 11 12月, 2013 1 次提交
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由 J. Bruce Fields 提交于
This has gone a little stale. Reported-by: NChristoph Hellwig <hch@infradead.org> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJ. Bruce Fields <bfields@redhat.com>
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