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2008-01-28ext4: fix up EXT4FS_DEBUG buildsEric Sandeen
Builds with EXT4FS_DEBUG defined (to enable ext4_debug()) fail without these changes. Clean up some format warnings too. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com>
2008-01-28ext4: Fix ext4_show_options to show the correct mount options.Aneesh Kumar K.V
We need to look at the default value and make sure the mount options are not set via default value before showing them via ext4_show_options Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext4: Add EXT4_IOC_MIGRATE ioctlAneesh Kumar K.V
The below patch add ioctl for migrating ext3 indirect block mapped inode to ext4 extent mapped inode. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext4: Add inode version support in ext4Jean Noel Cordenner
This patch adds 64-bit inode version support to ext4. The lower 32 bits are stored in the osd1.linux1.l_i_version field while the high 32 bits are stored in the i_version_hi field newly created in the ext4_inode. This field is incremented in case the ext4_inode is large enough. A i_version mount option has been added to enable the feature. Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: Andreas Dilger <adilger@clusterfs.com> Signed-off-by: Kalpak Shah <kalpak@clusterfs.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Jean Noel Cordenner <jean-noel.cordenner@bull.net>
2008-01-28vfs: Add 64 bit i_version supportJean Noel Cordenner
The i_version field of the inode is changed to be a 64-bit counter that is set on every inode creation and that is incremented every time the inode data is modified (similarly to the "ctime" time-stamp). The aim is to fulfill a NFSv4 requirement for rfc3530. This first part concerns the vfs, it converts the 32-bit i_version in the generic inode to a 64-bit, a flag is added in the super block in order to check if the feature is enabled and the i_version is incremented in the vfs. Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: Jean Noel Cordenner <jean-noel.cordenner@bull.net> Signed-off-by: Kalpak Shah <kalpak@clusterfs.com>
2008-01-28ext4: Add the journal checksum featureGirish Shilamkar
The journal checksum feature adds two new flags i.e JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag indicates that the commit block contains the checksum for the blocks described by the descriptor blocks. Due to checksums, writing of the commit record no longer needs to be synchronous. Now commit record can be sent to disk without waiting for descriptor blocks to be written to disk. This behavior is controlled using JBD2_FEATURE_ASYNC_COMMIT flag. Older kernels/e2fsck should not be able to recover the journal with _ASYNC_COMMIT hence it is made incompat. The commit header has been extended to hold the checksum along with the type of the checksum. For recovery in pass scan checksums are verified to ensure the sanity and completeness(in case of _ASYNC_COMMIT) of every transaction. Signed-off-by: Andreas Dilger <adilger@clusterfs.com> Signed-off-by: Girish Shilamkar <girish@clusterfs.com> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com>
2008-01-28jbd2: jbd2 stats through procfsJohann Lombardi
The patch below updates the jbd stats patch to 2.6.20/jbd2. The initial patch was posted by Alex Tomas in December 2005 (http://marc.info/?l=linux-ext4&m=113538565128617&w=2). It provides statistics via procfs such as transaction lifetime and size. Sometimes, investigating performance problems, i find useful to have stats from jbd about transaction's lifetime, size, etc. here is a patch for review and inclusion probably. for example, stats after creation of 3M files in htree directory: [root@bob ~]# cat /proc/fs/jbd/sda/history R/C tid wait run lock flush log hndls block inlog ctime write drop close R 261 8260 2720 0 0 750 9892 8170 8187 C 259 750 0 4885 1 R 262 20 2200 10 0 770 9836 8170 8187 R 263 30 2200 10 0 3070 9812 8170 8187 R 264 0 5000 10 0 1340 0 0 0 C 261 8240 3212 4957 0 R 265 8260 1470 0 0 4640 9854 8170 8187 R 266 0 5000 10 0 1460 0 0 0 C 262 8210 2989 4868 0 R 267 8230 1490 10 0 4440 9875 8171 8188 R 268 0 5000 10 0 1260 0 0 0 C 263 7710 2937 4908 0 R 269 7730 1470 10 0 3330 9841 8170 8187 R 270 0 5000 10 0 830 0 0 0 C 265 8140 3234 4898 0 C 267 720 0 4849 1 R 271 8630 2740 20 0 740 9819 8170 8187 C 269 800 0 4214 1 R 272 40 2170 10 0 830 9716 8170 8187 R 273 40 2280 0 0 3530 9799 8170 8187 R 274 0 5000 10 0 990 0 0 0 where, R - line for transaction's life from T_RUNNING to T_FINISHED C - line for transaction's checkpointing tid - transaction's id wait - for how long we were waiting for new transaction to start (the longest period journal_start() took in this transaction) run - real transaction's lifetime (from T_RUNNING to T_LOCKED lock - how long we were waiting for all handles to close (time the transaction was in T_LOCKED) flush - how long it took to flush all data (data=ordered) log - how long it took to write the transaction to the log hndls - how many handles got to the transaction block - how many blocks got to the transaction inlog - how many blocks are written to the log (block + descriptors) ctime - how long it took to checkpoint the transaction write - how many blocks have been written during checkpointing drop - how many blocks have been dropped during checkpointing close - how many running transactions have been closed to checkpoint this one all times are in msec. [root@bob ~]# cat /proc/fs/jbd/sda/info 280 transaction, each upto 8192 blocks average: 1633ms waiting for transaction 3616ms running transaction 5ms transaction was being locked 1ms flushing data (in ordered mode) 1799ms logging transaction 11781 handles per transaction 5629 blocks per transaction 5641 logged blocks per transaction Signed-off-by: Johann Lombardi <johann.lombardi@bull.net> Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
2008-01-28ext4: Take read lock during overwrite case.Aneesh Kumar K.V
When we are overwriting a file and not actually allocating new file system blocks we need to take only the read lock on i_data_sem. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext4: Convert truncate_mutex to read write semaphore.Aneesh Kumar K.V
We are currently taking the truncate_mutex for every read. This would have performance impact on large CPU configuration. Convert the lock to read write semaphore and take read lock when we are trying to read the file. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext4: Make ext4_get_blocks_wrap take the truncate_mutex early.Aneesh Kumar K.V
When doing a migrate from ext3 to ext4 inode we need to make sure the test for inode type and walking inode data happens inside lock. To make this happen move truncate_mutex early before checking the i_flags. This actually should enable us to remove the verify_chain(). Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext4: remove unused code from ext4_find_entry()Mariusz Kozlowski
The unused code found in ext3_find_entry() is also present (and still unused) in the ext4_find_entry() code. This patch removes it. Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2008-01-28ext4: Check for the correct error return fromAneesh Kumar K.V
ext4_ext_get_blocks returns negative values on error. We should check for <= 0 Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28jbd2: Fix assertion failure in fs/jbd2/checkpoint.cJan Kara
Before we start committing a transaction, we call __journal_clean_checkpoint_list() to cleanup transaction's written-back buffers. If this call happens to remove all of them (and there were already some buffers), __journal_remove_checkpoint() will decide to free the transaction because it isn't (yet) a committing transaction and soon we fail some assertion - the transaction really isn't ready to be freed :). We change the check in __journal_remove_checkpoint() to free only a transaction in T_FINISHED state. The locking there is subtle though (as everywhere in JBD ;(). We use j_list_lock to protect the check and a subsequent call to __journal_drop_transaction() and do the same in the end of journal_commit_transaction() which is the only place where a transaction can get to T_FINISHED state. Probably I'm too paranoid here and such locking is not really necessary - checkpoint lists are processed only from log_do_checkpoint() where a transaction must be already committed to be processed or from __journal_clean_checkpoint_list() where kjournald itself calls it and thus transaction cannot change state either. Better be safe if something changes in future... Signed-off-by: Jan Kara <jack@suse.cz> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2008-01-28ext4: add block bitmap validationAneesh Kumar K.V
When a new block bitmap is read from disk in read_block_bitmap() there are a few bits that should ALWAYS be set. In particular, the blocks given corresponding to block bitmap, inode bitmap and inode tables. Validate the block bitmap against these blocks. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28Add buffer head related helper functionsAneesh Kumar K.V
Add buffer head related helper function bh_uptodate_or_lock and bh_submit_read which can be used by file system Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext4: Change the default behaviour on errorAneesh Kumar K.V
ext4 file system was by default ignoring errors and continuing. This is not a good default as continuing on error could lead to file system corruption. Change the default to mark the file system readonly. Debian and ubuntu already does this as the default in their fstab. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com>
2008-01-28ext4: fix oops on corrupted ext4 mountEric Sandeen
When mounting an ext4 filesystem with corrupted s_first_data_block, things can go very wrong and oops. Because blocks_count in ext4_fill_super is a u64, and we must use do_div, the calculation of db_count is done differently than on ext4. If first_data_block is corrupted such that it is larger than ext4_blocks_count, for example, then the intermediate blocks_count value may go negative, but sign-extend to a very large value: blocks_count = (ext4_blocks_count(es) - le32_to_cpu(es->s_first_data_block) + EXT4_BLOCKS_PER_GROUP(sb) - 1); This is then assigned to s_groups_count which is an unsigned long: sbi->s_groups_count = blocks_count; This may result in a value of 0xFFFFFFFF which is then used to compute db_count: db_count = (sbi->s_groups_count + EXT4_DESC_PER_BLOCK(sb) - 1) / EXT4_DESC_PER_BLOCK(sb); and in this case db_count will wind up as 0 because the addition overflows 32 bits. This in turn causes the kmalloc for group_desc to be of 0 size: sbi->s_group_desc = kmalloc(db_count * sizeof (struct buffer_head *), GFP_KERNEL); and eventually in ext4_check_descriptors, dereferencing sbi->s_group_desc[desc_block] will result in a NULL pointer dereference. The simplest test seems to be to sanity check s_first_data_block, EXT4_BLOCKS_PER_GROUP, and ext4_blocks_count values to be sure their combination won't result in a bad intermediate value for blocks_count. We could just check for db_count == 0, but catching it at the root cause seems like it provides more info. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Mingming Cao <cmm@us.ibm.com>
2008-01-28ext4/super.c: fix #ifdef's (CONFIG_EXT4_* -> CONFIG_EXT4DEV_*)Adrian Bunk
Based on a report by Robert P. J. Day. Signed-off-by: Adrian Bunk <bunk@kernel.org>
2008-01-28ext4: Return after ext4_error in case of failuresAneesh Kumar K.V
This fix some instances where we were continuing after calling ext4_error. ext4_error call panic only if errors=panic mount option is set. So we need to make sure we return correctly after ext4_error call Reported by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext3: Fix the max file size for ext3 file system.Aneesh Kumar K.V
The max file size for ext3 file system is now calculated with hardcoded 4K block size. The patch fixes it to be calculated with the right block size. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext2: Fix the max file size for ext2 file system.Aneesh Kumar K.V
The max file size for ext2 file system is now calculated with hardcoded 4K block size. The patch fixes it to be calculated with the right block size. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext4: store maxbytes for bitmapped files and return EFBIG as appropriateEric Sandeen
Calculate & store the max offset for bitmapped files, and catch too-large seeks, truncates, and writes in ext4, shortening or rejecting as appropriate. Signed-off-by: Eric Sandeen <sandeen@redhat.com>
2008-01-28ext4: export iov_shorten from kernel for ext4's useEric Sandeen
Export iov_shorten() from kernel so that ext4 can truncate too-large writes to bitmapped files. Signed-off-by: Eric Sandeen <sandeen@redhat.com>
2008-01-28ext4: different maxbytes functions for bitmap & extent filesEric Sandeen
use 2 different maxbytes functions for bitmapped & extent-based files. Signed-off-by: Eric Sandeen <sandeen@redhat.com>
2008-01-28ext4: Support large filesAneesh Kumar K.V
This patch converts ext4_inode i_blocks to represent total blocks occupied by the inode in file system block size. Earlier the variable used to represent this in 512 byte block size. This actually limited the total size of the file. The feature is enabled transparently when we write an inode whose i_blocks cannot be represnted as 512 byte units in a 48 bit variable. inode flag EXT4_HUGE_FILE_FL Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext4: Add support for 48 bit inode i_blocks.Aneesh Kumar K.V
Use the __le16 l_i_reserved1 field of the linux2 struct of ext4_inode to represet the higher 16 bits for i_blocks. With this change max_file size becomes (2**48 -1 )* 512 bytes. We add a RO_COMPAT feature to the super block to indicate that inode have i_blocks represented as a split 48 bits. Super block with this feature set cannot be mounted read write on a kernel with CONFIG_LSF disabled. Super block flag EXT4_FEATURE_RO_COMPAT_HUGE_FILE Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext4: Rename i_dir_acl to i_size_highAneesh Kumar K.V
Rename ext4_inode.i_dir_acl to i_size_high drop ext4_inode_info.i_dir_acl as it is not used Rename ext4_inode.i_size to ext4_inode.i_size_lo Add helper function for accessing the ext4_inode combined i_size. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext4: Rename i_file_acl to i_file_acl_loAneesh Kumar K.V
Rename i_file_acl to i_file_acl_lo. This helps in finding bugs where we use i_file_acl instead of the combined i_file_acl_lo and i_file_acl_high Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext4: Fix sparse warnings.Aneesh Kumar K.V
Fix sparse warnings related to static functions and local variables. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext4: Introduce ext4_update_*_featureAneesh Kumar K.V
Introduce ext4_update_*_feature and use them instead of opencoding. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2008-01-28ext4: fixes block group number being set to a negative valueAvantika Mathur
This patch fixes various places where the group number is set to a negative value. Signed-off-by: Avantika Mathur <mathur@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2008-01-28ext4: add ext4_group_t, and change all group variables to this type.Avantika Mathur
In many places variables for block group are of type int, which limits the maximum number of block groups to 2^31. Each block group can have up to 2^15 blocks, with a 4K block size, and the max filesystem size is limited to 2^31 * (2^15 * 2^12) = 2^58 -- or 256 PB This patch introduces a new type ext4_group_t, of type unsigned long, to represent block group numbers in ext4. All occurrences of block group variables are converted to type ext4_group_t. Signed-off-by: Avantika Mathur <mathur@us.ibm.com>
2008-01-28ext4 extents: remove unneeded castsEric Sandeen
There are many casts in extents.c which are not needed, as the variables are already the type of the cast, or are being promoted for no particular reason in printk's. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com>
2008-01-28ext4: Introduce ext4_lblk_tAneesh Kumar K.V
This patch adds a new data type ext4_lblk_t to represent the logical file blocks. This is the preparatory patch to support large files in ext4 The follow up patch with convert the ext4_inode i_blocks to represent the number of blocks in file system block size. This changes makes it possible to have a block number 2**32 -1 which will result in overflow if the block number is represented by signed long. This patch convert all the block number to type ext4_lblk_t which is typedef to __u32 Also remove dead code ext4_ext_walk_space Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
2008-01-28ext4: Avoid rec_len overflow with 64KB block sizeJan Kara
With 64KB blocksize, a directory entry can have size 64KB which does not fit into 16 bits we have for entry lenght. So we store 0xffff instead and convert value when read from / written to disk. The patch also converts some places to use ext4_next_entry() when we are changing them anyway. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mingming Cao <cmm@us.ibm.com>
2008-01-28ext4: Support large blocksize up to PAGESIZETakashi Sato
This patch set supports large block size(>4k, <=64k) in ext4, just enlarging the block size limit. But it is NOT possible to have 64kB blocksize on ext4 without some changes to the directory handling code. The reason is that an empty 64kB directory block would have a rec_len == (__u16)2^16 == 0, and this would cause an error to be hit in the filesystem. The proposed solution is treat 64k rec_len with a an impossible value like rec_len = 0xffff to handle this. The Patch-set consists of the following 2 patches. [1/2] ext4: enlarge blocksize - Allow blocksize up to pagesize [2/2] ext4: fix rec_len overflow - prevent rec_len from overflow with 64KB blocksize Now on 64k page ppc64 box runs with this patch set we could create a 64k block size ext4dev, and able to handle empty directory block. Signed-off-by: Takashi Sato <sho@tnes.nec.co.jp> Signed-off-by: Mingming Cao <cmm@us.ibm.com>
2008-01-29Merge branch 'for-2.6.25' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-2.6.25' of git://git.kernel.dk/linux-2.6-block: block: implement drain buffers __bio_clone: don't calculate hw/phys segment counts block: allow queue dma_alignment of zero blktrace: Add blktrace ioctls to SCSI generic devices
2008-01-28cfq-iosched: relax IOPRIO_CLASS_IDLE restrictionsJens Axboe
Currently you must be root to set idle io prio class on a process. This is due to the fact that the idle class is implemented as a true idle class, meaning that it will not make progress if someone else is requesting disk access. Unfortunately this means that it opens DOS opportunities by locking down file system resources, hence it is root only at the moment. This patch relaxes the idle class a little, by removing the truly idle part (which entals a grace period with associated timer). The modifications make the idle class as close to zero impact as can be done while still guarenteeing progress. This means we can relax the root only criteria as well. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-01-28io context sharing: preliminary supportJens Axboe
Detach task state from ioc, instead keep track of how many processes are accessing the ioc. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-01-28ioprio: move io priority from task_struct to io_contextJens Axboe
This is where it belongs and then it doesn't take up space for a process that doesn't do IO. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-01-28__bio_clone: don't calculate hw/phys segment countsJens Axboe
If the users sets a new ->bi_bdev on the bio after __bio_clone() has returned it, the "segment counts valid" flag still remains even though it may be different with the new target. So don't calculate segment counts in __bio_clone(). Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-01-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] DFS build fixes [CIFS] DFS support: provide shrinkable mounts [CIFS] Do not log path names in lookup errors [CIFS] DFS support patchset: Added mountdata [CIFS] Forgot to add two new files from previous commit [CIFS] DNS name resolution helper upcall for cifs [CIFS] fix checkpatch warnings in fs/cifs/inode.c [CIFS] hold ses sem on tcp session reconnect during mount [CIFS] Allow setting mode via cifs acl [CIFS] fix unicode string alignment in SPNEGO setup [CIFS] cifs_partialpagewrite() cleanup [CIFS] use krb5 session key from first SMB session after a NegProt [CIFS] redo existing session setup if needed in cifs_mount [CIFS] Only dump SPNEGO key if CONFIG_CIFS_DEBUG2 is set [CIFS] fix SetEA failure to some Samba versions
2008-01-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (200 commits) [SCSI] usbstorage: use last_sector_bug flag universally [SCSI] libsas: abstract STP task status into a function [SCSI] ultrastor: clean up inline asm warnings [SCSI] aic7xxx: fix firmware build [SCSI] aacraid: fib context lock for management ioctls [SCSI] ch: remove forward declarations [SCSI] ch: fix device minor number management bug [SCSI] ch: handle class_device_create failure properly [SCSI] NCR5380: fix section mismatch [SCSI] sg: fix /proc/scsi/sg/devices when no SCSI devices [SCSI] IB/iSER: add logical unit reset support [SCSI] don't use __GFP_DMA for sense buffers if not required [SCSI] use dynamically allocated sense buffer [SCSI] scsi.h: add macro for enclosure bit of inquiry data [SCSI] sd: add fix for devices with last sector access problems [SCSI] fix pcmcia compile problem [SCSI] aacraid: add Voodoo Lite class of cards. [SCSI] aacraid: add new driver features flags [SCSI] qla2xxx: Update version number to 8.02.00-k7. [SCSI] qla2xxx: Issue correct MBC_INITIALIZE_FIRMWARE command. ...
2008-01-25Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2 * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (31 commits) ocfs2: clean up bh null checks ocfs2: document access rules for blocked_lock_list configfs: file.c fix possible recursive locking configfs: dir.c fix possible recursive locking configfs: Remove EXPERIMENTAL ocfs2: bump version number ocfs2/dlm: Clear joining_node on hearbeat node down ocfs2: convert byte order of constant instead of variable ocfs2: Update default cluster timeouts ocfs2: printf fixes ocfs2: Use generic_file_llseek ocfs2: Safer read_inline_data() ocfs2: Silence false lockdep warnings [PATCH 2/2] ocfs2: cluster aware flock() [PATCH 1/2] ocfs2: add flock lock type ocfs2: Local alloc window size changeable via mount option ocfs2: Support commit= mount option ocfs2: Add missing permission checks [PATCH 2/2] ocfs2: Implement group add for online resize [PATCH 1/2] ocfs2: Add group extend for online resize ...
2008-01-25ocfs2: clean up bh null checksMark Fasheh
If we know a buffer_head is non-null, then brelse() is unnecessary and put_bh() can be used instead. Also, an explicit check for NULL is unnecessary when using brelse(). This patch only covers buffer_head_io.c and resize.c, which have recently added code which exhibits this problem. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-01-25ocfs2: document access rules for blocked_lock_listMark Fasheh
ocfs2_super->blocked_lock_list and ocfs2_super->blocked_lock_count have some usage restrictions which aren't immediately obvious to anyone reading the code. It's a good idea to document this so that we avoid making costly mistakes in the future. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-01-25configfs: file.c fix possible recursive lockingJoonwoo Park
configfs_register_subsystem() with default_groups triggers recursive locking. it seems that mutex_lock_nested is needed. ============================================= [ INFO: possible recursive locking detected ] 2.6.24-rc6 #145 --------------------------------------------- swapper/1 is trying to acquire lock: (&sb->s_type->i_mutex_key#3){--..}, at: [<c40c9a9e>] configfs_add_file+0x2e/0x70 but task is already holding lock: (&sb->s_type->i_mutex_key#3){--..}, at: [<c40ca985>] configfs_register_subsystem+0x55/0x130 other info that might help us debug this: 1 lock held by swapper/1: #0: (&sb->s_type->i_mutex_key#3){--..}, at: [<c40ca985>] configfs_register_subsystem+0x55/0x130 stack backtrace: Pid: 1, comm: swapper Not tainted 2.6.24-rc6 #145 [<c40053ba>] show_trace_log_lvl+0x1a/0x30 [<c4005e82>] show_trace+0x12/0x20 [<c400687e>] dump_stack+0x6e/0x80 [<c404ec72>] __lock_acquire+0xe62/0x1120 [<c404efb2>] lock_acquire+0x82/0xa0 [<c43fda88>] mutex_lock_nested+0x98/0x2e0 [<c40c9a9e>] configfs_add_file+0x2e/0x70 [<c40c9b0c>] configfs_create_file+0x2c/0x40 [<c40ca639>] configfs_attach_item+0x139/0x220 [<c40ca734>] configfs_attach_group+0x14/0x140 [<c40ca7e9>] configfs_attach_group+0xc9/0x140 [<c40ca9f6>] configfs_register_subsystem+0xc6/0x130 [<c45c8186>] init_netconsole+0x2b6/0x300 [<c45a75f2>] kernel_init+0x142/0x320 [<c4004fb3>] kernel_thread_helper+0x7/0x14 ======================= Signed-off-by: Joonwoo Park <joonwpark81@gmail.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-01-25configfs: dir.c fix possible recursive lockingJoonwoo Park
configfs_register_subsystem() with default_groups triggers recursive locking. it seems that mutex_lock_nested is needed. ============================================= [ INFO: possible recursive locking detected ] 2.6.24-rc6 #141 --------------------------------------------- swapper/1 is trying to acquire lock: (&sb->s_type->i_mutex_key#3){--..}, at: [<c40ca76f>] configfs_attach_group+0x4f/0x190 but task is already holding lock: (&sb->s_type->i_mutex_key#3){--..}, at: [<c40ca9d5>] configfs_register_subsystem+0x55/0x130 other info that might help us debug this: 1 lock held by swapper/1: #0: (&sb->s_type->i_mutex_key#3){--..}, at: [<c40ca9d5>] configfs_register_subsystem+0x55/0x130 stack backtrace: Pid: 1, comm: swapper Not tainted 2.6.24-rc6 #141 [<c40053ba>] show_trace_log_lvl+0x1a/0x30 [<c4005e82>] show_trace+0x12/0x20 [<c400687e>] dump_stack+0x6e/0x80 [<c404ec72>] __lock_acquire+0xe62/0x1120 [<c404efb2>] lock_acquire+0x82/0xa0 [<c43fdad8>] mutex_lock_nested+0x98/0x2e0 [<c40ca76f>] configfs_attach_group+0x4f/0x190 [<c40caa46>] configfs_register_subsystem+0xc6/0x130 [<c45c8186>] init_netconsole+0x2b6/0x300 [<c45a75f2>] kernel_init+0x142/0x320 [<c4004fb3>] kernel_thread_helper+0x7/0x14 ======================= Signed-off-by: Joonwoo Park <joonwpark81@gmail.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-01-25configfs: Remove EXPERIMENTALJoel Becker
configfs has been alive and kicking for a while now. It underpins some non-EXPERIMENTAL subsystems, such as OCFS2's cluster stack. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-01-25ocfs2: bump version numberMark Fasheh
Bump the printed version to 1.5.0. This helps us quickly identify which version of Ocfs2 a bug filer is running. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>