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2012-05-20UBIFS: fix memory leak on error pathSidney Amani
UBIFS leaks memory on error path in 'mount_ubifs()'. In case of failure in 'ubifs_fixup_free_space()', it does not call 'ubifs_lpt_free()' whereas LPT data structures can potentially be allocated. The amount of memory leaked can be quite high -- see 'ubifs_lpt_init()'. The bug was introduced when moving the LPT initialisation earlier in the mount process (commit '781c5717a95a74b294beb38b8276943b0f8b5bb4'). Signed-off-by: Sidney Amani <seed95@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-20UBIFS: make ubifs_lpt_init clean-up in case of failureArtem Bityutskiy
Most functions in UBIFS follow the following designn pattern: if the function allocates multiple resources, and failss at some point, it frees what it has allocated and returns an error. So the caller can rely on the fact that the callee has cleaned up everything after own failure. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Acked-by: Sidney Amani <seed95@gmail.com>
2012-05-16UBIFS: get rid of dbg_errArtem Bityutskiy
This patch removes the 'dbg_err()' macro and we now use 'ubifs_err()' instead. The idea of 'dbg_err()' was to compile out some error message to make the binary a bit smaller - but I think it was a bad idea. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-16UBIFS: remove Kconfig debugging optionArtem Bityutskiy
Have the debugging stuff always compiled-in instead. It simplifies maintanance a lot. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-16UBIFS: remove a couple of unused macrosArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-16UBIFS: rename dumping functionsArtem Bityutskiy
This commit re-names all functions which dump something from "dbg_dump_*()" to "ubifs_dump_*()". This is done for consistency with UBI and because this way it will be more logical once we remove the debugging sompilation option. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-16UBIFS: get rid of dbg_dump_stackArtem Bityutskiy
In case of errors we almost always need the stack dump - it makes no sense to compile it out. Remove the 'dbg_dump_stack()' function completely. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-10vfs: make it possible to access the dentry hash/len as one 64-bit entryLinus Torvalds
This allows comparing hash and len in one operation on 64-bit architectures. Right now only __d_lookup_rcu() takes advantage of this, since that is the case we care most about. The use of anonymous struct/unions hides the alternate 64-bit approach from most users, the exception being a few cases where we initialize a 'struct qstr' with a static initializer. This makes the problematic cases use a new QSTR_INIT() helper function for that (but initializing just the name pointer with a "{ .name = xyzzy }" initializer remains valid, as does just copying another qstr structure). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-06vfs: Rename end_writeback() to clear_inode()Jan Kara
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>
2012-05-03UBIFS: remove xattr Kconnfig optionSubodh Nijsure
Remove CONFIG_UBIFS_FS_XATTR configuration option and associated UBIFS_FS_XATTR ifdefs. Testing: Tested using integck while using nandsim on x86 & MX28 based platform with Micron MT29F2G08ABAEAH4 nand. Signed-off-by: Subodh Nijsure <snijsure@grid-net.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-03UBIFS: remove douple initialization in change_category()Dan Carpenter
"heap" is initialized twice. I removed the first one, because it makes Smatch complain that we use "new_cat" as an offset before checking it. This doesn't change how the code works, it's just a cleanup. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-03-23Merge tag 'upstream-3.4-rc1' of git://git.infradead.org/linux-ubifsLinus Torvalds
Pull UBIFS changes from Artem Bityutskiy: - Improve error messages - Clean-up i_nlink management - Minor clean-ups * tag 'upstream-3.4-rc1' of git://git.infradead.org/linux-ubifs: UBIFS: improve error messages UBIFS: kill CUR_MAX_KEY_LEN macro UBIFS: do not use inc_link when i_nlink is zero UBIFS: make the dbg_lock spinlock static UBIFS: increase dumps loglevel UBIFS: amend recovery debugging message
2012-03-21Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs pile 1 from Al Viro: "This is _not_ all; in particular, Miklos' and Jan's stuff is not there yet." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (64 commits) ext4: initialization of ext4_li_mtx needs to be done earlier debugfs-related mode_t whack-a-mole hfsplus: add an ioctl to bless files hfsplus: change finder_info to u32 hfsplus: initialise userflags qnx4: new helper - try_extent() qnx4: get rid of qnx4_bread/qnx4_getblk take removal of PF_FORKNOEXEC to flush_old_exec() trim includes in inode.c um: uml_dup_mmap() relies on ->mmap_sem being held, but activate_mm() doesn't hold it um: embed ->stub_pages[] into mmu_context gadgetfs: list_for_each_safe() misuse ocfs2: fix leaks on failure exits in module_init ecryptfs: make register_filesystem() the last potential failure exit ntfs: forgets to unregister sysctls on register_filesystem() failure logfs: missing cleanup on register_filesystem() failure jfs: mising cleanup on register_filesystem() failure make configfs_pin_fs() return root dentry on success configfs: configfs_create_dir() has parent dentry in dentry->d_parent configfs: sanitize configfs_create() ...
2012-03-20switch open-coded instances of d_make_root() to new helperAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20ubifs: remove the second argument of k[un]map_atomic()Cong Wang
Signed-off-by: Cong Wang <amwang@redhat.com>
2012-03-07UBIFS: improve error messagesArtem Bityutskiy
Ricard complaints that the following error message is odd: "UBIFS error (pid 1578): validate_sb: bad superblock, error 8" and he is right. This patch improves the error messages a bit and makes them more user-friendly. Reported-by: Ricard Wanderlof <ricard.wanderlof@axis.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-02-29UBIFS: kill CUR_MAX_KEY_LEN macroArtem Bityutskiy
It is useless and confusing and may make people believe they may just change it, which is not true, because this will also change the on-flash format. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-02-29UBIFS: do not use inc_link when i_nlink is zeroArtem Bityutskiy
This patch changes the 'i_nlink' counter handling in 'ubifs_unlink()', 'ubifs_rmdir()' and 'ubifs_rename()'. In these function 'i_nlink' may become 0, and if 'ubifs_jnl_update()' failed, we would use 'inc_nlink()' to restore the previous 'i_nlink' value, which is incorrect from the VFS point of view and would cause a 'WARN_ON()' (see 'inc_nlink() implementation). This patches saves the previous 'i_nlink' value in a local variable and uses it at the error path instead of calling 'inc_nlink()'. We do this only for the inodes where 'i_nlink' may potentially become zero. This change has been requested by Al Viro <viro@ZenIV.linux.org.uk>. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-02-29UBIFS: make the dbg_lock spinlock staticArtem Bityutskiy
Remove the usage of the 'dbg_lock' spinlock from 'dbg_err()' and make it static. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-02-29UBIFS: increase dumps loglevelArtem Bityutskiy
Most of the time we use the dumping function to dump something in case of error. We use 'KERN_DEBUG' printk level, and the drawback is that users do not see them in the console, while they see the other error messages in the console. The result is that they send bug reports which does not contain a lot of useful information. This patch changes the printk level of the dump functions to 'KERN_ERR' to correct the situation. I documented it in the MTD web site that people have to send the 'dmesg' output when submitting bug reposts - it did not help. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-02-29UBIFS: amend recovery debugging messageArtem Bityutskiy
Print LEB and offset as well. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-01-15UBIFS: fix non-debug configuration buildDominique Martinet
Fix a brown paperbag bug introduced by me in the previous commit. I was in hurry and forgot about the non-debug case completely. Artem: amend the commit message and tweak the patch to preserve alignment. This made the patch a bit less readable, though. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
2012-01-13Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6Linus Torvalds
* 'linux-next' of git://git.infradead.org/ubifs-2.6: UBIFS: fix key printing UBIFS: use snprintf instead of sprintf when printing keys UBIFS: fix debugging messages UBIFS: make debugging messages light again UBI: fix debugging messages UBI: make vid_hdr non-static
2012-01-13UBIFS: fix key printingArtem Bityutskiy
Before commit 56e46742e846e4de167dde0e1e1071ace1c882a5 we have had locking around all printing macros and we could use static buffers for creating key strings and printing them. However, now we do not have that locking and we cannot use static buffers. This commit removes the old DBGKEY() macros and introduces few new helper macros for printing debugging messages plus a key at the end. Thankfully, all the messages are already structures in a way that the key is printed in the end. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-01-13UBIFS: use snprintf instead of sprintf when printing keysArtem Bityutskiy
Switch to 'snprintf()' which is more secure and reliable. This is also a preparation to the subsequent key printing fixes. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-01-11UBIFS: fix debugging messagesArtem Bityutskiy
Patch 56e46742e846e4de167dde0e1e1071ace1c882a5 broke UBIFS debugging messages: before that commit when UBIFS debugging was enabled, users saw few useful debugging messages after mount. However, that patch turned 'dbg_msg()' into 'pr_debug()', so to enable the debugging messages users have to enable them first via /sys/kernel/debug/dynamic_debug/control, which is very impractical. This commit makes 'dbg_msg()' to use 'printk()' instead of 'pr_debug()', just as it was before the breakage. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Cc: stable@kernel.org [3.0+]
2012-01-11UBIFS: make debugging messages light againArtem Bityutskiy
We switch to dynamic debugging in commit 56e46742e846e4de167dde0e1e1071ace1c882a5 but did not take into account that now we do not control anymore whether a specific message is enabled or not. So now we lock the "dbg_lock" and release it in every debugging macro, which make them not so light-weight. This commit removes the "dbg_lock" protection from the debugging macros to fix the issue. The downside is that now our DBGKEY() stuff is broken, but this is not critical at all and will be fixed later. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Cc: stable@kernel.org [3.0+]
2012-01-10Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6Linus Torvalds
* 'linux-next' of git://git.infradead.org/ubifs-2.6: UBI: fix use-after-free on error path UBI: fix missing scrub when there is a bit-flip UBIFS: Use kmemdup rather than duplicating its implementation
2012-01-06vfs: switch ->show_options() to struct dentry *Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03ubifs: propagate umode_tAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch ->mknod() to umode_tAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch ->create() to umode_tAl Viro
vfs_create() ignores everything outside of 16bit subset of its mode argument; switching it to umode_t is obviously equivalent and it's the only caller of the method Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch vfs_mkdir() and ->mkdir() to umode_tAl Viro
vfs_mkdir() gets int, but immediately drops everything that might not fit into umode_t and that's the only caller of ->mkdir()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: fix the stupidity with i_dentry in inode destructorsAl Viro
Seeing that just about every destructor got that INIT_LIST_HEAD() copied into it, there is no point whatsoever keeping this INIT_LIST_HEAD in inode_init_once(); the cost of taking it into inode_init_always() will be negligible for pipes and sockets and negative for everything else. Not to mention the removal of boilerplate code from ->destroy_inode() instances... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: mnt_drop_write_file()Al Viro
new helper (wrapper around mnt_drop_write()) to be used in pair with mnt_want_write_file(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch a bunch of places to mnt_want_write_file()Al Viro
it's both faster (in case when file has been opened for write) and cleaner. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-12-13ubifs: too early register_filesystem()Al Viro
doing that before you are ready to handle mount() is a Bad Idea(tm)... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-22UBIFS: Use kmemdup rather than duplicating its implementationThomas Meyer
The semantic patch that makes this change is available in scripts/coccinelle/api/memdup.cocci. Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2011-11-07Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6Linus Torvalds
* 'linux-next' of git://git.infradead.org/ubifs-2.6: UBIFS: fix the dark space calculation UBIFS: introduce a helper to dump scanning info
2011-11-06Merge branch 'writeback-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux * 'writeback-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux: writeback: Add a 'reason' to wb_writeback_work writeback: send work item to queue_io, move_expired_inodes writeback: trace event balance_dirty_pages writeback: trace event bdi_dirty_ratelimit writeback: fix ppc compile warnings on do_div(long long, unsigned long) writeback: per-bdi background threshold writeback: dirty position control - bdi reserve area writeback: control dirty pause time writeback: limit max dirty pause time writeback: IO-less balance_dirty_pages() writeback: per task dirty rate limit writeback: stabilize bdi->dirty_ratelimit writeback: dirty rate control writeback: add bg_threshold parameter to __bdi_update_bandwidth() writeback: dirty position control writeback: account per-bdi accumulated dirtied pages
2011-11-02filesystems: add set_nlink()Miklos Szeredi
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>
2011-11-02filesystems: add missing nlink wrappersMiklos Szeredi
Replace direct i_nlink updates with the respective updater function (inc_nlink, drop_nlink, clear_nlink, inode_dec_link_count). Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
2011-10-31writeback: Add a 'reason' to wb_writeback_workCurt Wohlgemuth
This creates a new 'reason' field in a wb_writeback_work structure, which unambiguously identifies who initiates writeback activity. A 'wb_reason' enumeration has been added to writeback.h, to enumerate the possible reasons. The 'writeback_work_class' and tracepoint event class and 'writeback_queue_io' tracepoints are updated to include the symbolic 'reason' in all trace events. And the 'writeback_inodes_sbXXX' family of routines has had a wb_stats parameter added to them, so callers can specify why writeback is being started. Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Curt Wohlgemuth <curtw@google.com> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
2011-08-26UBIFS: fix the dark space calculationsrimugunthan dhandapani
The dark space calculation should be 64 bit type-casted, when assigning to tmp64 (similar to how total_free is calculated). Overflow will occur for very large flashes. Signed-off-by: srimugunthan <srimugunthan.dhandapani@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-08-22UBIFS: introduce a helper to dump scanning infoArtem Bityutskiy
This commit adds 'dbg_dump_sleb()' helper function to dump scanning information. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-08-19UBIFS: not build debug messages with CONFIG_UBIFS_FS_DEBUG disabledMichal Marek
With $ grep -e UBIFS_FS_DEBUG -e DYNAMIC_DEBUG .config # CONFIG_UBIFS_FS_DEBUG is not set CONFIG_DYNAMIC_DEBUG=y Debug messages are kept in the object files due to the dynamic_pr_debug() macro, even if they are never going to be printed: $ make fs/ubifs/super.o $ strings fs/ubifs/super.o | grep 'compiled on' compiled on: Aug 11 2011 at 12:21:38 Use plain printk to fix this. Signed-off-by: Michal Marek <mmarek@suse.cz> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-07-22Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (107 commits) vfs: use ERR_CAST for err-ptr tossing in lookup_instantiate_filp isofs: Remove global fs lock jffs2: fix IN_DELETE_SELF on overwriting rename() killing a directory fix IN_DELETE_SELF on overwriting rename() on ramfs et.al. mm/truncate.c: fix build for CONFIG_BLOCK not enabled fs:update the NOTE of the file_operations structure Remove dead code in dget_parent() AFS: Fix silly characters in a comment switch d_add_ci() to d_splice_alias() in "found negative" case as well simplify gfs2_lookup() jfs_lookup(): don't bother with . or .. get rid of useless dget_parent() in btrfs rename() and link() get rid of useless dget_parent() in fs/btrfs/ioctl.c fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers drivers: fix up various ->llseek() implementations fs: handle SEEK_HOLE/SEEK_DATA properly in all fs's that define their own llseek Ext4: handle SEEK_HOLE/SEEK_DATA generically Btrfs: implement our own ->llseek fs: add SEEK_HOLE and SEEK_DATA flags reiserfs: make reiserfs default to barrier=flush ... Fix up trivial conflicts in fs/xfs/linux-2.6/xfs_super.c due to the new shrinker callout for the inode cache, that clashed with the xfs code to start the periodic workers later.
2011-07-20fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlersJosef Bacik
Btrfs needs to be able to control how filemap_write_and_wait_range() is called in fsync to make it less of a painful operation, so push down taking i_mutex and the calling of filemap_write_and_wait() down into the ->fsync() handlers. Some file systems can drop taking the i_mutex altogether it seems, like ext3 and ocfs2. For correctness sake I just pushed everything down in all cases to make sure that we keep the current behavior the same for everybody, and then each individual fs maintainer can make up their mind about what to do from there. Thanks, Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-08UBIFS: fix master node recoveryAnatolij Gustschin
When the 1st LEB was unmapped and written but 2nd LEB not, the master node recovery doesn't succeed after power cut. We see following error when mounting UBIFS partition on NOR flash: UBIFS error (pid 1137): ubifs_recover_master_node: failed to recover master node Correct 2nd master node offset check is needed to fix the problem. If the 2nd master node is at the end in the 2nd LEB, first master node is used for recovery. When checking for this condition we should check whether the master node is exactly at the end of the LEB (without remaining empty space) or whether it is followed by an empty space less than the master node size. Artem: when the error happened, offs2 = 261120, sz = 512, c->leb_size = 262016. Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
2011-07-04UBIFS: improve power cut emulation testingArtem Bityutskiy
This patch cleans-up and improves the power cut testing: 1. Kill custom 'simple_random()' function and use 'random32()' instead. 2. Make timeout larger 3. When cutting the buffer - fill the end with random data sometimes, not only with 0xFFs. 4. Some times cut in the middle of the buffer, not always at the end. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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