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* ufs: fix deadlocks introduced by sb mutex mergeAlexey Khoroshilov2014-09-07
| | | | | | | | | | | | | | | | | Commit 0244756edc4b ("ufs: sb mutex merge + mutex_destroy") introduces deadlocks in ufs_new_inode() and ufs_free_inode(). Most callers of that functions acqure the mutex by themselves and ufs_{new,free}_inode() do that via lock_ufs(), i.e we have an unavoidable double lock. The patch proposes to resolve the issue by making sure that ufs_{new,free}_inode() are not called with the mutex held. Found by Linux Driver Verification project (linuxtesting.org). Cc: stable@vger.kernel.org # 3.16 Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* fs/ufs/inode.c: kernel-doc warning fixesFabian Frederick2014-08-08
| | | | | | | Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm + fs: store shadow entries in page cacheJohannes Weiner2014-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Rik van Riel <riel@redhat.com> Reviewed-by: Minchan 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: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* truncate: drop 'oldsize' truncate_pagecache() parameterKirill A. Shutemov2013-09-12
| | | | | | | | | | truncate_pagecache() doesn't care about old size since commit cedabed49b39 ("vfs: Fix vmtruncate() regression"). Let's drop it. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ufs: drop vmtruncateMarco Stornelli2012-12-20
| | | | | | | Removed vmtruncate Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* userns: Convert the ufs filesystem to use kuid/kgid where appropriateEric W. Biederman2012-09-21
| | | | | | Cc: Evgeniy Dushistov <dushistov@mail.ru> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
* vfs: Rename end_writeback() to clear_inode()Jan Kara2012-05-06
| | | | | | | | | After we moved inode_sync_wait() from end_writeback() it doesn't make sense to call the function end_writeback() anymore. Rename it to clear_inode() which well says what the function really does - set I_CLEAR flag. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
* Remove all #inclusions of asm/system.hDavid Howells2012-03-28
| | | | | | | | | Remove all #inclusions of asm/system.h preparatory to splitting and killing it. Performed with the following command: perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *` Signed-off-by: David Howells <dhowells@redhat.com>
* ufs: propagate umode_tAl Viro2012-01-03
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* filesystems: add set_nlink()Miklos Szeredi2011-11-02
| | | | | | | | | Replace remaining direct i_nlink updates with a new set_nlink() updater function. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Tested-by: Toshiyuki Okajima <toshi.okajima@jp.fujitsu.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* Merge branch 'master' into for-nextJiri Kosina2011-04-26
|\ | | | | | | | | Fast-forwarded to current state of Linus' tree as there are patches to be applied for files that didn't exist on the old branch.
| * Fix common misspellingsLucas De Marchi2011-03-31
| | | | | | | | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
| * Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2011-03-24
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block: (65 commits) Documentation/iostats.txt: bit-size reference etc. cfq-iosched: removing unnecessary think time checking cfq-iosched: Don't clear queue stats when preempt. blk-throttle: Reset group slice when limits are changed blk-cgroup: Only give unaccounted_time under debug cfq-iosched: Don't set active queue in preempt block: fix non-atomic access to genhd inflight structures block: attempt to merge with existing requests on plug flush block: NULL dereference on error path in __blkdev_get() cfq-iosched: Don't update group weights when on service tree fs: assign sb->s_bdi to default_backing_dev_info if the bdi is going away block: Require subsystems to explicitly allocate bio_set integrity mempool jbd2: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging jbd: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging fs: make fsync_buffers_list() plug mm: make generic_writepages() use plugging blk-cgroup: Add unaccounted time to timeslice_used. block: fixup plugging stubs for !CONFIG_BLOCK block: remove obsolete comments for blkdev_issue_zeroout. blktrace: Use rq->cmd_flags directly in blk_add_trace_rq. ... Fix up conflicts in fs/{aio.c,super.c}
| | * block: remove per-queue pluggingJens Axboe2011-03-10
| | | | | | | | | | | | | | | | | | | | | | | | Code has been converted over to the new explicit on-stack plugging, and delay users have been converted to use the new API for that. So lets kill off the old plugging along with aops->sync_page(). Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* | | ufs: Fix a typoAlessio Igor Bogani2011-04-08
|/ / | | | | | | | | Signed-off-by: Alessio Igor Bogani <abogani@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | ufs: remove the BKLArnd Bergmann2011-03-02
|/ | | | | | | | | | | | | | | | | | | | | | | This introduces a new per-superblock mutex in UFS to replace the big kernel lock. I have been careful to avoid nested calls to lock_ufs and to get the lock order right with respect to other mutexes, in particular lock_super. I did not make any attempt to prove that the big kernel lock is not needed in a particular place in the code, which is very possible. The mutex has a significant performance impact, so it is only used on SMP or PREEMPT configurations. As Nick Piggin noticed, any allocation inside of the lock may end up deadlocking when we get to ufs_getfrag_block in the reclaim task, so we now use GFP_NOFS. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Nick Bowler <nbowler@elliptictech.com> Cc: Evgeniy Dushistov <dushistov@mail.ru> Cc: Nick Piggin <npiggin@gmail.com>
* switch ufs to ->evict_inode()Al Viro2010-08-09
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* get rid of block_write_begin_newtruncChristoph Hellwig2010-08-09
| | | | | | | | | | | Move the call to vmtruncate to get rid of accessive blocks to the callers in preparation of the new truncate sequence and rename the non-truncating version to block_write_begin. While we're at it also remove several unused arguments to block_write_begin. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* introduce __block_write_beginChristoph Hellwig2010-08-09
| | | | | | | | | | | | Split up the block_write_begin implementation - __block_write_begin is a new trivial wrapper for block_prepare_write that always takes an already allocated page and can be either called from block_write_begin or filesystem code that already has a page allocated. Remove the handling of already allocated pages from block_write_begin after switching all callers that do it to __block_write_begin. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* clean up write_begin usage for directories in pagecacheChristoph Hellwig2010-08-09
| | | | | | | | | | | | | | | | | | | For filesystem that implement directories in pagecache we call block_write_begin with an already allocated page for this code, while the normal regular file write path uses the default block_write_begin behaviour. Get rid of the __foofs_write_begin helper and opencode the normal write_begin call in foofs_write_begin, while adding a new foofs_prepare_chunk helper for the directory code. The added benefit is that foofs_prepare_chunk has a much saner calling convention. Note that the interruptible flag passed into block_write_begin is always ignored if we already pass in a page (see next patch for details), and we never were doing truncations of exessive blocks for this case either so we can switch directly to block_write_begin_newtrunc. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ufs: Remove dead quota codeJan Kara2010-05-24
| | | | | | | | | UFS quota is non-functional at least since 2.6.12 because dq_op was set to NULL. Since the filesystem exists mainly to allow cooperation with Solaris and quota format isn't standard, just remove the dead code. CC: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Jan Kara <jack@suse.cz>
* ufs: add ufs speciffic ->setattr callDmitry Monakhov2010-05-21
| | | | | | | | generic setattr not longer responsible for quota transfer. use ufs_setattr for all ufs's inodes. Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Jan Kara <jack@suse.cz>
* Merge branch 'for_linus' of ↵Linus Torvalds2010-03-05
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: (33 commits) quota: stop using QUOTA_OK / NO_QUOTA dquot: cleanup dquot initialize routine dquot: move dquot initialization responsibility into the filesystem dquot: cleanup dquot drop routine dquot: move dquot drop responsibility into the filesystem dquot: cleanup dquot transfer routine dquot: move dquot transfer responsibility into the filesystem dquot: cleanup inode allocation / freeing routines dquot: cleanup space allocation / freeing routines ext3: add writepage sanity checks ext3: Truncate allocated blocks if direct IO write fails to update i_size quota: Properly invalidate caches even for filesystems with blocksize < pagesize quota: generalize quota transfer interface quota: sb_quota state flags cleanup jbd: Delay discarding buffers in journal_unmap_buffer ext3: quota_write cross block boundary behaviour quota: drop permission checks from xfs_fs_set_xstate/xfs_fs_set_xquota quota: split out compat_sys_quotactl support from quota.c quota: split out netlink notification support from quota.c quota: remove invalid optimization from quota_sync_all ... Fixed trivial conflicts in fs/namei.c and fs/ufs/inode.c
| * dquot: cleanup dquot initialize routineChristoph Hellwig2010-03-05
| | | | | | | | | | | | | | | | | | | | | | | | Get rid of the initialize dquot operation - it is now always called from the filesystem and if a filesystem really needs it's own (which none currently does) it can just call into it's own routine directly. Rename the now static low-level dquot_initialize helper to __dquot_initialize and vfs_dq_init to dquot_initialize to have a consistent namespace. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
| * dquot: move dquot initialization responsibility into the filesystemChristoph Hellwig2010-03-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently various places in the VFS call vfs_dq_init directly. This means we tie the quota code into the VFS. Get rid of that and make the filesystem responsible for the initialization. For most metadata operations this is a straight forward move into the methods, but for truncate and open it's a bit more complicated. For truncate we currently only call vfs_dq_init for the sys_truncate case because open already takes care of it for ftruncate and open(O_TRUNC) - the new code causes an additional vfs_dq_init for those which is harmless. For open the initialization is moved from do_filp_open into the open method, which means it happens slightly earlier now, and only for regular files. The latter is fine because we don't need to initialize it for operations on special files, and we already do it as part of the namespace operations for directories. Add a dquot_file_open helper that filesystems that support generic quotas can use to fill in ->open. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
* | pass writeback_control to ->write_inodeChristoph Hellwig2010-03-05
|/ | | | | | | | | | This gives the filesystem more information about the writeback that is happening. Trond requested this for the NFS unstable write handling, and other filesystems might benefit from this too by beeing able to distinguish between the different callers in more detail. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ufs: sector_t cannot be negativeRoel Kluin2009-06-18
| | | | | | | | | unsigned i_block,fragment cannot be negative. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ufs: ensure fast symlinks are NUL-terminatedDuane Griffin2009-03-27
| | | | | | | | Ensure fast symlink targets are NUL-terminated, even if corrupted on-disk. Signed-off-by: Duane Griffin <duaneg@dghda.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ufs: don't truncate longer ufs2 fast symlinksDuane Griffin2009-03-27
| | | | | | | | | | | | | | | ufs2 fast symlinks can be twice as long as ufs ones, however the code was using the ufs size in various places. Fix that so ufs2 symlinks over 60 characters aren't truncated. Note that we copy the entire area instead of using the maxsymlinklen field from the superblock. This way we will be more robust against corruption (of the superblock). While we are at it, use memcpy instead of open-coding it with for loops. Signed-off-by: Duane Griffin <duaneg@dghda.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ufs: replace remaining __FUNCTION__ occurrencesHarvey Harrison2008-04-28
| | | | | | | | | __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Jan Engelhardt <jengelh@linux01.gwdg.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drop linux/ufs_fs.h from userspace export and relocate it to fs/ufs/ufs_fs.hMike Frysinger2008-02-08
| | | | | | | | | | | | | | Per previous discussions about cleaning up ufs_fs.h, people just want this straight up dropped from userspace export. The only remaining consumer (silo) has been fixed a while ago to not rely on this header. This allows use to move it completely from include/linux/ to fs/ufs/ seeing as how the only in-kernel consumer is fs/ufs/. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: Jan Kara <jack@ucw.cz> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* iget: stop UFS from using iget() and read_inode()David Howells2008-02-07
| | | | | | | | | | | | | | | | | Stop the UFS filesystem from using iget() and read_inode(). Replace ufs_read_inode() with ufs_iget(), and call that instead of iget(). ufs_iget() then uses iget_locked() directly and returns a proper error code instead of an inode in the event of an error. ufs_fill_super() returns any error incurred when getting the root inode instead of EINVAL. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: David Howells <dhowells@redhat.com> Cc: Evgeniy Dushistov <dushistov@mail.ru> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ufs: move non-layout parts of ufs_fs.h to fs/ufs/Christoph Hellwig2007-10-17
| | | | | | | | | | | | | | | Move prototypes and in-core structures to fs/ufs/ similar to what most other filesystems already do. I made little modifications: move also ufs debug macros and mount options constants into fs/ufs/ufs.h, this stuff also private for ufs. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ufs: convert to new aopsNick Piggin2007-10-16
| | | | | | | Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ufs proper handling of zero link caseEvgeniy Dushistov2007-04-17
| | | | | | | | | | | | | | | | | | | | | | This patch should fix or partly fix this bug: http://bugzilla.kernel.org/show_bug.cgi?id=8276 The problem is: - if we see "zero link case" during reading inode operation, we call ufs_error(which remount fs readonly), but not "mark" inode as bad (1) - in readonly case we do not fill some data structures, which are used in read and write case (2) - VFS call ufs_delete_inode if link count is zero (3) so (1)->(3)->(2) cause oops, this patch should fix such scenario Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Cc: Jim Paris <jim@jtan.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] ufs: zeroize the rest of block in truncateEvgeniy Dushistov2007-03-16
| | | | | | | | | | | | | | | | | | | | | | | | This patch fix behaviour in such test scenario: lseek(fd, BIG_OFFSET) write(fd, buf, sizeof(buf)) truncate(BIG_OFFSET) truncate(BIG_OFFSET + sizeof(buf)) read(fd, buf...) Because of if file big enough(BIG_OFFSET) we start allocate space by block, ordinary block size > page size, so we should zeroize the rest of block in truncate(except last framgnet, about which VFS should care), to not get garbage, when we extend file. Also patch corrects conversion from pointer to block to physical block number, this helps in case of not common used UFS types. And add to debug output inode number. Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] ufs2: more correct work with timeEvgeniy Dushistov2007-03-16
| | | | | | | | | | | | | | | | | | | | | This patch corrects work with time in UFS2 case. 1) According to UFS2 disk layout modification/access and so on "time" should be hold in two variables one 64bit for seconds and another 32bit for nanoseconds, at now for some unknown reason we suppose that "inode time" holds in three variables 32bit for seconds, 32bit for milliseconds and 32bit for nanoseconds. 2) We set amount of nanoseconds in "VFS inode" to 0 during read, instead of getting values from "on disk inode"(this should close http://bugzilla.kernel.org/show_bug.cgi?id=7991). Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Cc: Bjoern Jacke <bjoern@j3e.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] ufs2 write: block allocation updateEvgeniy Dushistov2007-02-12
| | | | | | | | | Patch adds ability to work with 64bit metadata, this made by replacing work with 32bit pointers by inline functions. Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] ufs2 write: inodes writeEvgeniy Dushistov2007-02-12
| | | | | | | | | | | | | | This patch adds into write inode path function to write UFS2 inode, and modifys allocate inode path to allocate and init additional inode chunks. Also some cleanups: - remove not used parameters in some functions - remove i_gen field from ufs_inode_info structure, there is i_generation in inode structure with same purposes. Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] ufs: alloc metadata null page fixEvgeniy Dushistov2007-01-30
| | | | | | | | | | | | | | | These series of patches result of UFS1 write support stress testing, like running fsx-linux, untar and build linux kernel etc We pass from ufs::get_block_t to levels below: pointer to the current page, to make possible things like reallocation of blocks on the fly, and we also uses this pointer for indication, what actually we allocate data block or meta data block, but currently we make decision about what we allocate on the wrong level, this may and cause oops if we allocate blocks in some special order. Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] fix garbage instead of zeroes in UFSEvgeniy Dushistov2007-01-05
| | | | | | | | | | | | | | | | | | | | | | | | | | Looks like this is the problem, which point Al Viro some time ago: ufs's get_block callback allocates 16k of disk at a time, and links that entire 16k into the file's metadata. But because get_block is called for only a single buffer_head (a 2k buffer_head in this case?) we are only able to tell the VFS that this 2k is buffer_new(). So when ufs_getfrag_block() is later called to map some more data in the file, and when that data resides within the remaining 14k of this fragment, ufs_getfrag_block() will incorrectly return a !buffer_new() buffer_head. I don't see _right_ way to do nullification of whole block, if use inode page cache, some pages may be outside of inode limits (inode size), and will be lost; if use blockdev page cache it is possible to zero real data, if later inode page cache will be used. The simpliest way, as can I see usage of block device page cache, but not only mark dirty, but also sync it during "nullification". I use my simple tests collection, which I used for check that create,open,write,read,close works on ufs, and I see that this patch makes ufs code 18% slower then before. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] inode-diet: Eliminate i_blksize from the inode structureTheodore Ts'o2006-09-27
| | | | | | | | | | | | | | | | This eliminates the i_blksize field from struct inode. Filesystems that want to provide a per-inode st_blksize can do so by providing their own getattr routine instead of using the generic_fillattr() function. Note that some filesystems were providing pretty much random (and incorrect) values for i_blksize. [bunk@stusta.de: cleanup] [akpm@osdl.org: generic_fillattr() fix] Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ufs: write to hole in big fileEvgeniy Dushistov2006-08-27
| | | | | | | | | | | | | | | | | | | | | | | | | | On UFS, this scenario: open(O_TRUNC) lseek(1024 * 1024 * 80) write("A") lseek(1024 * 2) write("A") may cause access to invalid address. This happened because of "goal" is calculated in wrong way in block allocation path, as I see this problem exists also in 2.4. We use construction like this i_data[lastfrag], i_data array of pointers to direct blocks, indirect and so on, it has ceratain size ~20 elements, and lastfrag may have value for example 40000. Also this patch fixes related to handling such scenario issues, wrong zeroing metadata, in case of block(not fragment) allocation, and wrong goal calculation, when we allocate block Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ufs: truncate should allocate block for last byteEvgeniy Dushistov2006-07-01
| | | | | | | | | | | | | | | | | | | | | This patch fixes buggy behaviour of UFS in such kind of scenario: open(, O_TRUNC...) ftruncate(, 1024) ftruncate(, 0) Such a scenario causes ufs_panic and remount read-only. This happen because of according to specification UFS should always allocate block for last byte, and many parts of our implementation rely on this, but `ufs_truncate' doesn't care about this. To make possible return error code and to know about old size, this patch removes `truncate' from ufs inode_operations and uses `setattr' method to call ufs_truncate. Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ufs: printk() fixAndrew Morton2006-06-29
| | | | | | | | | | | fs/ufs/inode.c: In function `ufs_frag_map': fs/ufs/inode.c:101: warning: long long unsigned int format, u64 arg (arg 4) fs/ufs/inode.c: In function `ufs_getfrag_block': fs/ufs/inode.c:432: warning: long long unsigned int format, u64 arg (arg 2) Cc: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mark address_space_operations constChristoph Hellwig2006-06-28
| | | | | | | | | | Same as with already do with the file operations: keep them in .rodata and prevents people from doing runtime patching. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Steven French <sfrench@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ufs: ufs_read_inode cleanupEvgeniy Dushistov2006-06-27
| | | | | | | | | | | | Add missed ufsi->i_dir_start_lookup initialization in ufs_read_inode in UFS2 case. Also it cleans ufs_read_inode function to prevent such kind of situation in the future: it move depend on UFS type parts of code into separate functions and leaves in ufs_read_inode only generic code. It cleans code and avoids duplication. Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fs/ufs/inode.c: make 2 functions staticAdrian Bunk2006-06-25
| | | | | | | | Make two needlessly global functions static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ufs: missed brelse and wrong baseblkEvgeniy Dushistov2006-06-25
| | | | | | | | | | | | | This patch fixes two bugs, which introduced by previous patches: 1) Missed "brelse" 2) Sometimes "baseblk" may be wrongly calculated, if i_size is equal to zero, which lead infinite cycle in "mpage_writepages". Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ufs: zero metadataEvgeniy Dushistov2006-06-25
| | | | | | | | | | | Presently if we allocate several "metadata" blocks (pointers to indirect blocks for example), we fill with zeroes only the first block. This cause some problems in "truncate" function. Also this patch remove some unused arguments from several functions and add comments. Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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