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* NFS: Kill the obsolete NFS_PARANOIAJesper Juhl2007-05-09
| | | | | | | Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: use __set_current_state()Milind Arun Choudhary2007-05-09
| | | | | | | | | | use __set_current_state(TASK_*) instead of current->state = TASK_*, in fs/nfs Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Clean up NFSv4 XDR error messageChuck Lever2007-05-09
| | | | | | | Make it more useful for debugging purposes. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: NFS client underestimates how large an NFSv4 SETATTR reply can beChuck Lever2007-05-09
| | | | | | | | The maximum size of an NFSv4 SETATTR compound reply should include the GETATTR operation that we send. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Remove redundant check in nfs_check_verifier()Trond Myklebust2007-05-09
| | | | | | | | | | | The check for nfs_attribute_timeout(dir) in nfs_check_verifier is redundant: nfs_lookup_revalidate() will already call nfs_revalidate_inode() on the parent dir when necessary. The only case where this is not done is the case of a negative dentry. Fix this case by moving up the revalidation code. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Fix a jiffie wraparound issueTrond Myklebust2007-05-09
| | | | | | | | | dentry verifiers are always set to the parent directory's cache_change_attribute. There is no reason to be testing for anything other than equality when we're trying to find out if the dentry has been checked since the last time the directory was modified. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Merge git://git.infradead.org/mtd-2.6Linus Torvalds2007-05-09
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: (21 commits) [MTD] [CHIPS] Remove MTD_OBSOLETE_CHIPS (jedec, amd_flash, sharp) [MTD] Delete allegedly obsolete "bank_size" field of mtd_info. [MTD] Remove unnecessary user space check from mtd.h. [MTD] [MAPS] Remove flash maps for no longer supported 405LP boards [MTD] [MAPS] Fix missing printk() parameter in physmap_of.c MTD driver [MTD] [NAND] platform NAND driver: add driver [MTD] [NAND] platform NAND driver: update header [JFFS2] Simplify and clean up jffs2_add_tn_to_tree() some more. [JFFS2] Remove another bogus optimisation in jffs2_add_tn_to_tree() [JFFS2] Remove broken insert_point optimisation in jffs2_add_tn_to_tree() [JFFS2] Remember to calculate overlap on nodes which replace older nodes [JFFS2] Don't advance c->wbuf_ofs to next eraseblock after wbuf flush [MTD] [NAND] at91_nand.c: CMDLINE_PARTS support [MTD] [NAND] Tidy up handling of page number in nand_block_bad() [MTD] block2mtd_paramline[] mustn't be __initdata [MTD] [NAND] Support multiple chips in CAFÉ driver [MTD] [NAND] Rename cafe.c to cafe_nand.c and remove the multi-obj magic [MTD] [NAND] Use rslib for CAFÉ ECC [RSLIB] Support non-canonical GF representations [JFFS2] Remove dead file histo_mips.h ...
| * [JFFS2] Simplify and clean up jffs2_add_tn_to_tree() some more.David Woodhouse2007-05-07
| | | | | | | | | | | | Fixing at least a couple more bugs in the process. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [JFFS2] Remove another bogus optimisation in jffs2_add_tn_to_tree()David Woodhouse2007-05-07
| | | | | | | | | | | | | | | | | | | | | | | | We attempted to insert new nodes into the tree by just using rb_replace_node to let them replace an earlier node which they completely overlapped. However, that could place the new node into the wrong place in the tree, since its start could be node only before the start of the victim, but before the node _before_ the victim in the tree (if that previous node actually ends _after_ the new node, thus isn't entirely overlapped and wasn't itself chosen to be the victim). Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [JFFS2] Remove broken insert_point optimisation in jffs2_add_tn_to_tree()David Woodhouse2007-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The original code would remember, during the first pass over the tree, a suitable place to start the insertion from when we eventually come to add a new node. The optimisation was broken, and we sometimes ended up inserting a new node in the wrong place because we started the insertion from the wrong point. Just ditch the optimisation and start the insertion from the root of the tree, for now. I'll try it again when I'm feeling cleverer. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [JFFS2] Remember to calculate overlap on nodes which replace older nodesDavid Woodhouse2007-05-05
| | | | | | | | | | | | | | | | | | This fixes a problem Artem found with the integck test tool -- we weren't correctly keeping track of the 'overlap' flag in some cases, which led to the nodes being played back in an incorrect order and file corruption. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [JFFS2] Don't advance c->wbuf_ofs to next eraseblock after wbuf flushDavid Woodhouse2007-05-05
| | | | | | | | | | | | | | | | | | | | | | After flushing the last page of an eraseblock, don't leave the wbuf 'offset' field pointing at the start of the next physical eraseblock. This was causing a BUG() on NOR-ECC (Sibley) flash, where we start writing a little further in, after the cleanmarker. Debugged by Alexander Belyakov <abelyako@googlemail.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [JFFS2] Remove dead file histo_mips.hDavid Woodhouse2007-05-02
| | | | | | | | | | | | | | Its contents were subsumed into compr_rubin.c in a previous commit, but I forgot to git-rm it. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds2007-05-09
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (25 commits) sound: convert "sound" subdirectory to UTF-8 MAINTAINERS: Add cxacru website/mailing list include files: convert "include" subdirectory to UTF-8 general: convert "kernel" subdirectory to UTF-8 documentation: convert the Documentation directory to UTF-8 Convert the toplevel files CREDITS and MAINTAINERS to UTF-8. remove broken URLs from net drivers' output Magic number prefix consistency change to Documentation/magic-number.txt trivial: s/i_sem /i_mutex/ fix file specification in comments drivers/base/platform.c: fix small typo in doc misc doc and kconfig typos Remove obsolete fat_cvf help text Fix occurrences of "the the " Fix minor typoes in kernel/module.c Kconfig: Remove reference to external mqueue library Kconfig: A couple of grammatical fixes in arch/i386/Kconfig Correct comments in genrtc.c to refer to correct /proc file. Fix more "deprecated" spellos. Fix "deprecated" typoes. ... Fix trivial comment conflict in kernel/relay.c.
| * | fix file specification in commentsUwe Kleine-König2007-05-09
| | | | | | | | | | | | | | | | | | | | | Many files include the filename at the beginning, serveral used a wrong one. Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
| * | Remove obsolete fat_cvf help textAlexander E. Patrakov2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | The text removed by the following patch refers to functionality that never worked, to non-existing documentation file, and to mount options marked as obsolete in the module. Signed-off-by: Alexander E. Patrakov <patrakov@ums.usu.ru> Signed-off-by: Adrian Bunk <bunk@stusta.de>
| * | Fix occurrences of "the the "Michael Opdenacker2007-05-09
| | | | | | | | | | | | | | | Signed-off-by: Michael Opdenacker <michael@free-electrons.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
| * | Fix misspellings collected by members of KJ list.Robert P. J. Day2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | Fix the misspellings of "propogate", "writting" and (oh, the shame :-) "kenrel" in the source tree. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
| * | Style fix in fs/select.cWANG Cong2007-05-09
| | | | | | | | | | | | | | | Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
| * | fs/libfs.c: >80 columns line break fixRonni Nielsen2007-05-09
| | | | | | | | | | | | | | | Signed-off-by: Ronni Nielsen <theronni@gmail.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* | | Add suspend-related notifications for CPU hotplugRafael J. Wysocki2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since nonboot CPUs are now disabled after tasks and devices have been frozen and the CPU hotplug infrastructure is used for this purpose, we need special CPU hotplug notifications that will help the CPU-hotplug-aware subsystems distinguish normal CPU hotplug events from CPU hotplug events related to a system-wide suspend or resume operation in progress. This patch introduces such notifications and causes them to be used during suspend and resume transitions. It also changes all of the CPU-hotplug-aware subsystems to take these notifications into consideration (for now they are handled in the same way as the corresponding "normal" ones). [oleg@tv-sign.ru: cleanups] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | reiserfs: use zero_user_pageNate Diller2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | Use zero_user_page() instead of open-coding it. Signed-off-by: Nate Diller <nate.diller@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | ext3: use zero_user_pageNate Diller2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | Use zero_user_page() instead of open-coding it. Signed-off-by: Nate Diller <nate.diller@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | affs: use zero_user_pageNate Diller2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | Use zero_user_page() instead of open-coding it. Signed-off-by: Nate Diller <nate.diller@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | fs: convert core functions to zero_user_pageNate Diller2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's very common for file systems to need to zero part or all of a page, the simplist way is just to use kmap_atomic() and memset(). There's actually a library function in include/linux/highmem.h that does exactly that, but it's confusingly named memclear_highpage_flush(), which is descriptive of *how* it does the work rather than what the *purpose* is. So this patchset renames the function to zero_user_page(), and calls it from the various places that currently open code it. This first patch introduces the new function call, and converts all the core kernel callsites, both the open-coded ones and the old memclear_highpage_flush() ones. Following this patch is a series of conversions for each file system individually, per AKPM, and finally a patch deprecating the old call. The diffstat below shows the entire patchset. [akpm@linux-foundation.org: fix a few things] Signed-off-by: Nate Diller <nate.diller@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | knfsd: avoid Oops if buggy userspace performs confusing filehandle->dentry ↵NeilBrown2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mapping When a lookup request arrives, nfsd uses information provided by userspace (mountd) to find the right filesystem. It then assumes that the same filehandle type as the incoming filehandle can be used to create an outgoing filehandle. However if mountd is buggy, or maybe just being creative, the filesystem may not support that filesystem type, and the kernel could oops, particularly if 'ex_uuid' is NULL but a FSID_UUID* filehandle type is used. So add some proper checking that the fsid version/type from the incoming filehandle is actually supportable, and ignore that information if it isn't supportable. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | knfsd: various nfsd xdr cleanupsNeilBrown2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1/ decode_sattr and decode_sattr3 never return NULL, so remove several checks for that. ditto for xdr_decode_hyper. 2/ replace some open coded XDR_QUADLEN calls with calls to XDR_QUADLEN 3/ in decode_writeargs, simply an 'if' to use a single calculation. .page_len is the length of that part of the packet that did not fit in the first page (the head). So the length of the data part is the remainder of the head, plus page_len. 3/ other minor cleanups. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | knfsd: trivial makefile cleanupChristoph Hellwig2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kbuild directly interprets <modulename>-y as objects to build into a module, no need to assign it to the old foo-objs variable. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | knfsd: avoid use of unitialised variables on error path when nfs exportsNeilBrown2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to zero various parts of 'exp' before any 'goto out', otherwise when we go to free the contents... we die. Signed-off-by: Neil Brown <neilb@suse.de> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | RPC: add wrapper for svc_reserve to account for checksumJeff Layton2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the kernel calls svc_reserve to downsize the expected size of an RPC reply, it fails to account for the possibility of a checksum at the end of the packet. If a client mounts a NFSv2/3 with sec=krb5i/p, and does I/O then you'll generally see messages similar to this in the server's ring buffer: RPC request reserved 164 but used 208 While I was never able to verify it, I suspect that this problem is also the root cause of some oopses I've seen under these conditions: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=227726 This is probably also a problem for other sec= types and for NFSv4. The large reserved size for NFSv4 compound packets seems to generally paper over the problem, however. This patch adds a wrapper for svc_reserve that accounts for the possibility of a checksum. It also fixes up the appropriate callers of svc_reserve to call the wrapper. For now, it just uses a hardcoded value that I determined via testing. That value may need to be revised upward as things change, or we may want to eventually add a new auth_op that attempts to calculate this somehow. Unfortunately, there doesn't seem to be a good way to reliably determine the expected checksum length prior to actually calculating it, particularly with schemes like spkm3. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Neil Brown <neilb@suse.de> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Acked-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | nfsd/nfs4state: remove unnecessary daemonize callEric W. Biederman2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | Acked-by: Neil Brown <neilb@suse.de> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | The NFSv2/NFSv3 server does not handle zero length WRITE requests correctlyPeter Staubach2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The NFSv2 and NFSv3 servers do not handle WRITE requests for 0 bytes correctly. The specifications indicate that the server should accept the request, but it should mostly turn into a no-op. Currently, the server will return an XDR decode error, which it should not. Attached is a patch which addresses this issue. It also adds some boundary checking to ensure that the request contains as much data as was requested to be written. It also correctly handles an NFSv3 request which requests to write more data than the server has stated that it is prepared to handle. Previously, there was some support which looked like it should work, but wasn't quite right. Signed-off-by: Peter Staubach <staubach@redhat.com> Acked-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | remove nfs4_acl_add_ace()Adrian Bunk2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | nfs4_acl_add_ace() can now be removed. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Neil Brown <neilb@cse.unsw.edu.au> Acked-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | unify flush_work/flush_work_keventd and rename it to cancel_work_syncOleg Nesterov2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | flush_work(wq, work) doesn't need the first parameter, we can use cwq->wq (this was possible from the very beginnig, I missed this). So we can unify flush_work_keventd and flush_work. Also, rename flush_work() to cancel_work_sync() and fix all callers. Perhaps this is not the best name, but "flush_work" is really bad. (akpm: this is why the earlier patches bypassed maintainers) Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Jeff Garzik <jeff@garzik.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Tejun Heo <htejun@gmail.com> Cc: Auke Kok <auke-jan.h.kok@intel.com>, Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | aio: use flush_work()Andrew Morton2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Migrate AIO over to use flush_work(). Cc: "Maciej W. Rozycki" <macro@linux-mips.org> Cc: David Howells <dhowells@redhat.com> Cc: Zach Brown <zach.brown@oracle.com> Cc: Benjamin LaHaise <bcrl@kvack.org> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | AFS: implement basic file write supportDavid Howells2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement support for writing to regular AFS files, including: (1) write (2) truncate (3) fsync, fdatasync (4) chmod, chown, chgrp, utime. AFS writeback attempts to batch writes into as chunks as large as it can manage up to the point that it writes back 65535 pages in one chunk or it meets a locked page. Furthermore, if a page has been written to using a particular key, then should another write to that page use some other key, the first write will be flushed before the second is allowed to take place. If the first write fails due to a security error, then the page will be scrapped and reread before the second write takes place. If a page is dirty and the callback on it is broken by the server, then the dirty data is not discarded (same behaviour as NFS). Shared-writable mappings are not supported by this patch. [akpm@linux-foundation.org: fix a bunch of warnings] Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | AFS: AFS fixupsDavid Howells2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make some miscellaneous changes to the AFS filesystem: (1) Assert RCU barriers on module exit to make sure RCU has finished with callbacks in this module. (2) Correctly handle the AFS server returning a zero-length read. (3) Split out data zapping calls into one function (afs_zap_data). (4) Rename some afs_file_*() functions to afs_*() where they apply to non-regular files too. (5) Be consistent about the presentation of volume ID:vnode ID in debugging output. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | fs: use path_walk in do_path_lookupJosef 'Jeff' Sipek2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since path_walk sets the total_link_count to 0 and calls link_path_walk, we can just call path_walk directly. Signed-off-by: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | fs: fix indentation in do_path_lookupJosef 'Jeff' Sipek2007-05-09
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | use simple_read_from_buffer() in fs/Akinobu Mita2007-05-09
|/ / | | | | | | | | | | | | | | | | | | Cleanup using simple_read_from_buffer() in binfmt_misc, configfs, and sysfs. Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Joel Becker <joel.becker@oracle.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | smaps: only define clear_refs for CONFIG_MMUDavid Rientjes2007-05-08
| | | | | | | | | | | | | | | | | | | | /proc/pid/clear_refs is only defined in the CONFIG_MMU case, so make sure we don't have any references to clear_refs_smap() in generic procfs code. Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Remove suid/sgid bits on [f]truncate()Linus Torvalds2007-05-08
| | | | | | | | | | | | | | | | .. to match what we do on write(). This way, people who write to files by using [f]truncate + writable mmap have the same semantics as if they were using the write() family of system calls. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge git://oss.sgi.com:8090/xfs/xfs-2.6Linus Torvalds2007-05-08
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://oss.sgi.com:8090/xfs/xfs-2.6: [XFS] Add lockdep support for XFS [XFS] Fix race in xfs_write() b/w dmapi callout and direct I/O checks. [XFS] Get rid of redundant "required" in msg. [XFS] Export via a function xfs_buftarg_list for use by kdb/xfsidbg. [XFS] Remove unused ilen variable and references. [XFS] Fix to prevent the notorious 'NULL files' problem after a crash. [XFS] Fix race condition in xfs_write(). [XFS] Fix uquota and oquota enforcement problems. [XFS] propogate return codes from flush routines [XFS] Fix quotaon syscall failures for group enforcement requests. [XFS] Invalidate quotacheck when mounting without a quota type. [XFS] reducing the number of random number functions. [XFS] remove more misc. unused args [XFS] the "aendp" arg to xfs_dir2_data_freescan is always NULL, remove it. [XFS] The last argument "lsn" of xfs_trans_commit() is always called with
| * | [XFS] Add lockdep support for XFSLachlan McIlroy2007-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | SGI-PV: 963965 SGI-Modid: xfs-linux-melb:xfs-kern:28485a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * | [XFS] Fix race in xfs_write() b/w dmapi callout and direct I/O checks.Lachlan McIlroy2007-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In xfs_write() the iolock is dropped and reacquired in XFS_SEND_DATA() which means that the file could change from not-cached to cached and we need to redo the direct I/O checks. We should also redo the direct I/O checks when the file size changes regardless if O_APPEND is set or not. SGI-PV: 963483 SGI-Modid: xfs-linux-melb:xfs-kern:28440a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * | [XFS] Get rid of redundant "required" in msg.Utako Kusaka2007-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | SGI-PV: 963466 SGI-Modid: xfs-linux-melb:xfs-kern:28416a Signed-off-by: Utako Kusaka <utako@tnes.nec.co.jp> Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
| * | [XFS] Export via a function xfs_buftarg_list for use by kdb/xfsidbg.Tim Shimmin2007-05-07
| | | | | | | | | | | | | | | | | | | | | | | | SGI-PV: 963465 SGI-Modid: xfs-linux-melb:xfs-kern:28414a Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * | [XFS] Remove unused ilen variable and references.Tim Shimmin2007-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | SGI-PV: 907752 SGI-Modid: xfs-linux-melb:xfs-kern:28344a Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
| * | [XFS] Fix to prevent the notorious 'NULL files' problem after a crash.Lachlan McIlroy2007-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The problem that has been addressed is that of synchronising updates of the file size with writes that extend a file. Without the fix the update of a file's size, as a result of a write beyond eof, is independent of when the cached data is flushed to disk. Often the file size update would be written to the filesystem log before the data is flushed to disk. When a system crashes between these two events and the filesystem log is replayed on mount the file's size will be set but since the contents never made it to disk the file is full of holes. If some of the cached data was flushed to disk then it may just be a section of the file at the end that has holes. There are existing fixes to help alleviate this problem, particularly in the case where a file has been truncated, that force cached data to be flushed to disk when the file is closed. If the system crashes while the file(s) are still open then this flushing will never occur. The fix that we have implemented is to introduce a second file size, called the in-memory file size, that represents the current file size as viewed by the user. The existing file size, called the on-disk file size, is the one that get's written to the filesystem log and we only update it when it is safe to do so. When we write to a file beyond eof we only update the in- memory file size in the write operation. Later when the I/O operation, that flushes the cached data to disk completes, an I/O completion routine will update the on-disk file size. The on-disk file size will be updated to the maximum offset of the I/O or to the value of the in-memory file size if the I/O includes eof. SGI-PV: 958522 SGI-Modid: xfs-linux-melb:xfs-kern:28322a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * | [XFS] Fix race condition in xfs_write().Lachlan McIlroy2007-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change addresses a race in xfs_write() where, for direct I/O, the flags need_i_mutex and need_flush are setup before the iolock is acquired. The logic used to setup the flags may change between setting the flags and acquiring the iolock resulting in these flags having incorrect values. For example, if a file is not currently cached then need_i_mutex is set to zero and then if the file is cached before the iolock is acquired we will fail to do the flushinval before the direct write. The flush (and also the call to xfs_zero_eof()) need to be done with the iolock held exclusive so we need to acquire the iolock before checking for cached data (or if the write begins after eof) to prevent this state from changing. For direct I/O I've chosen to always acquire the iolock in shared mode initially and if there is a need to promote it then drop it and reacquire it. There's also some other tidy-ups including removing the O_APPEND offset adjustment since that work is done in generic_write_checks() (and we don't use offset as an input parameter anywhere). SGI-PV: 962170 SGI-Modid: xfs-linux-melb:xfs-kern:28319a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
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