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2009-01-05ocfs2: fix indendation in ocfs2_dquot_drop_slowTao Ma1-1/+1
Signed-off-by: Tao Ma <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ext4: Add default allocation routines for quota structuresJan Kara1-1/+3
Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ext3: Add default allocation routines for quota structuresJan Kara1-1/+3
Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05reiserfs: Add default allocation routines for quota structuresJan Kara1-0/+2
Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Export dquot_alloc() and dquot_destroy() functionsJan Kara2-2/+6
These are default functions for creating and destroying quota structures and they should be used from filesystems. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Unexport dqblk_v1.h and dqblk_v2.hJan Kara4-8/+4
Unexport header files dqblk_v[12].h since except for quota format ID they don't contain information userspace should be interested in. Move ID definitions to quota.h. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Fix build warnings (64-bit types vs long long)Jan Kara2-4/+5
fs/ocfs2/quota_local.c: In function 'olq_set_dquot': fs/ocfs2/quota_local.c:844: warning: format '%lld' expects type 'long long int', but argument 7 has type '__le64' fs/ocfs2/quota_local.c:844: warning: format '%lld' expects type 'long long int', but argument 8 has type '__le64' fs/ocfs2/quota_local.c:844: warning: format '%lld' expects type 'long long int', but argument 7 has type '__le64' fs/ocfs2/quota_local.c:844: warning: format '%lld' expects type 'long long int', but argument 8 has type '__le64' fs/ocfs2/quota_local.c:844: warning: format '%lld' expects type 'long long int', but argument 7 has type '__le64' fs/ocfs2/quota_local.c:844: warning: format '%lld' expects type 'long long int', but argument 8 has type '__le64' fs/ocfs2/quota_global.c: In function '__ocfs2_sync_dquot': fs/ocfs2/quota_global.c:457: warning: format '%lld' expects type 'long long int', but argument 8 has type 's64' fs/ocfs2/quota_global.c:457: warning: format '%lld' expects type 'long long int', but argument 10 has type 's64' fs/ocfs2/quota_global.c:457: warning: format '%lld' expects type 'long long int', but argument 8 has type 's64' fs/ocfs2/quota_global.c:457: warning: format '%lld' expects type 'long long int', but argument 10 has type 's64' fs/ocfs2/quota_global.c:457: warning: format '%lld' expects type 'long long int', but argument 8 has type 's64' fs/ocfs2/quota_global.c:457: warning: format '%lld' expects type 'long long int', but argument 10 has type 's64' Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Make ocfs2_get_quota_block() consistent with ocfs2_read_quota_block()Jan Kara1-14/+13
Make function return error status and not buffer pointer so that it's consistent with ocfs2_read_quota_block(). Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Fix oops when extending quota filesJan Kara1-16/+12
We have to mark buffer as uptodate before calling ocfs2_journal_access() and ocfs2_set_buffer_uptodate() does not do this for us. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Fix ocfs2_read_quota_block() error handling.Joel Becker4-48/+60
ocfs2_bread() has become ocfs2_read_virt_blocks(), with a prototype to match ocfs2_read_blocks(). The quota code, converting from ocfs2_bread(), wraps the call to ocfs2_read_virt_blocks() in ocfs2_read_quota_block(). Unfortunately, the prototype of ocfs2_read_quota_block() matches the old prototype of ocfs2_bread(). The problem is that ocfs2_bread() returned the buffer head, and callers assumed that a NULL pointer was indicative of error. It wasn't. This is why ocfs2_bread() took an int*err argument as well. The new prototype of ocfs2_read_virt_blocks() avoids this error handling confusion. Let's change ocfs2_read_quota_block() to match. Signed-off-by: Joel Becker <[email protected]> Acked-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Add missing initializationJan Kara1-1/+1
Add missing variable initialization to ocfs2_dquot_drop_slow(). Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Use BH_JBDPrivateStart instead of BH_UnshadowMark Fasheh1-3/+2
This is safer. We no longer have to worry about tracking changes to jbd_state_bits. Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05jbd2: Add BH_JBDPrivateStartMark Fasheh1-0/+1
Add this so that file systems using JBD2 can safely allocate unused b_state bits. In this case, we add it so that Ocfs2 can define a single bit for tracking the validation state of a buffer. Acked-by: "Theodore Ts'o" <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Enable quota accounting on mount, disable on umountJan Kara4-4/+245
Enable quota usage tracking on mount and disable it on umount. Also add support for quota on and quota off quotactls and usrquota and grpquota mount options. Add quota features among supported ones. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Implement quota recoveryJan Kara6-32/+528
Implement functions for recovery after a crash. Functions just read local quota file and sync info to global quota file. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Periodic quota syncingMark Fasheh4-0/+101
This patch creates a work queue for periodic syncing of locally cached quota information to the global quota files. We constantly queue a delayed work item, to get the periodic behavior. Signed-off-by: Mark Fasheh <[email protected]> Acked-by: Jan Kara <[email protected]>
2009-01-05ocfs2: Add quota calls for allocation and freeing of inodes and spaceJan Kara8-39/+245
Add quota calls for allocation and freeing of inodes and space, also update estimates on number of needed credits for a transaction. Move out inode allocation from ocfs2_mknod_locked() because vfs_dq_init() must be called outside of a transaction. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Implementation of local and global quota file handlingJan Kara13-5/+2165
For each quota type each node has local quota file. In this file it stores changes users have made to disk usage via this node. Once in a while this information is synced to global file (and thus with other nodes) so that limits enforcement at least aproximately works. Global quota files contain all the information about usage and limits. It's mostly handled by the generic VFS code (which implements a trie of structures inside a quota file). We only have to provide functions to convert structures from on-disk format to in-memory one. We also have to provide wrappers for various quota functions starting transactions and acquiring necessary cluster locks before the actual IO is really started. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Mark system files as not subject to quota accountingJan Kara1-1/+3
Mark system files as not subject to quota accounting. This prevents possible recursions into quota code and thus deadlocks. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Assign feature bits and system inodes to quota feature and quota filesJan Kara4-3/+39
Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Support nested transactionsJan Kara1-7/+7
OCFS2 can easily support nested transactions. We just have to take care and not spoil statistics acquire semaphore unnecessarily. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Implement function for scanning active dquotsJan Kara2-0/+39
OCFS2 needs to scan all active dquots once in a while and sync quota information among cluster nodes. Provide a helper function for it so that it does not have to reimplement internally a list which VFS already has. Moreover this function is probably going to be useful for other clustered filesystems if they decide to use VFS quotas. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Add helpers to allow ocfs2 specific quota initialization, freeing and ↵Jan Kara2-6/+36
recovery OCFS2 needs to peek whether quota structure is already in memory so that it can avoid expensive cluster locking in that case. Similarly when freeing dquots, it checks whether it is the last quota structure user or not. Finally, it needs to get reference to dquot structure for specified id and quota type when recovering quota file after crash. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Update version numberJan Kara1-2/+1
Increase reported version number of quota support since quota core has changed significantly. Also remove __DQUOT_NUM_VERSION__ since nobody uses it. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Keep which entries were set by SETQUOTA quotactlJan Kara2-8/+30
Quota in a clustered environment needs to synchronize quota information among cluster nodes. This means we have to occasionally update some information in dquot from disk / network. On the other hand we have to be careful not to overwrite changes administrator did via SETQUOTA. So indicate in dquot->dq_flags which entries have been set by SETQUOTA and quota format can clear these flags when it properly propagated the changes. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Allow negative usage of space and inodesJan Kara2-3/+6
For clustered filesystems, it can happen that space / inode usage goes negative temporarily (because some node is allocating another node is freeing and they are not completely in sync). So let quota code allow this and change qsize_t so a signed type so that we don't underflow the variables. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Convert union in mem_dqinfo to a pointerJan Kara4-31/+35
Coming quota support for OCFS2 is going to need quite a bit of additional per-sb quota information. Moreover having fs.h include all the types needed for this structure would be a pain in the a**. So remove the union from mem_dqinfo and add a private pointer for filesystem's use. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Split off quota tree handling into a separate fileJan Kara8-581/+799
There is going to be a new version of quota format having 64-bit quota limits and a new quota format for OCFS2. They are both going to use the same tree structure as VFSv0 quota format. So split out tree handling into a separate file and make size of leaf blocks, amount of space usable in each block (needed for checksumming) and structures contained in them configurable so that the code can be shared. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Move quotaio_v[12].h from include/linux/ to fs/Jan Kara5-6/+6
Since these include files are used only by implementation of quota formats, there's no need to have them in include/linux/. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Introduce DQUOT_QUOTA_SYS_FILE flagJan Kara3-15/+40
If filesystem can handle quota files as system files hidden from users, we can skip a lot of cache invalidation, syncing, inode flags setting etc. when turning quotas on, off and quota_sync. Allow filesystem to indicate that it is hiding quota files from users by DQUOT_QUOTA_SYS_FILE flag. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Remove compatibility function sb_any_quota_enabled()Jan Kara1-6/+0
Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05reiserfs: Use sb_any_quota_loaded() instead of sb_any_quota_enabled().Jan Kara1-5/+3
Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ext4: Use sb_any_quota_loaded() instead of sb_any_quota_enabled()Jan Kara1-7/+4
Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ext3: Use sb_any_quota_loaded() instead of sb_any_quota_enabled()Jan Kara1-8/+4
Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Allow to separately enable quota accounting and enforcing limitsJan Kara4-112/+239
Split DQUOT_USR_ENABLED (and DQUOT_GRP_ENABLED) into DQUOT_USR_USAGE_ENABLED and DQUOT_USR_LIMITS_ENABLED. This way we are able to separately enable / disable whether we should: 1) ignore quotas completely 2) just keep uptodate information about usage 3) actually enforce quota limits This is going to be useful when quota is treated as filesystem metadata - we then want to keep quota information uptodate all the time and just enable / disable limits enforcement. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Make _SUSPENDED just a flagJan Kara2-6/+10
Upto now, DQUOT_USR_SUSPENDED behaved like a state - i.e., either quota was enabled or suspended or none. Now allowed states are 0, ENABLED, ENABLED | SUSPENDED. This will be useful later when we implement separate enabling of quota usage tracking and limits enforcement because we need to keep track of a state which has been suspended. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Remove bogus 'optimization' in check_idq() and check_bdq()Jan Kara1-2/+2
Checks like <= 0 for an unsigned type do not make much sence. The value could be only 0 and that does not happen often enough for the check to be worth it. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Increase size of variables for limits and inode usageJan Kara5-49/+79
So far quota was fine with quota block limits and inode limits/numbers in a 32-bit type. Now with rapid increase in storage sizes there are coming requests to be able to handle quota limits above 4TB / more that 2^32 inodes. So bump up sizes of types in mem_dqblk structure to 64-bits to be able to handle this. Also update inode allocation / checking functions to use qsize_t and make global structure keep quota limits in bytes so that things are consistent. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05quota: Add callbacks for allocating and destroying dquot structuresJan Kara2-5/+24
Some filesystems would like to keep private information together with each dquot. Add callbacks alloc_dquot and destroy_dquot allowing filesystem to allocate larger dquots from their private slab in a similar fashion we currently allocate inodes. Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2/xattr: Restore not_found in xisTao Ma1-1/+5
During an xattr set, when we move a xattr which was stored in inode to the outside bucket, we have to delete it and it will use the old value of xis->not_found. xis->not_found is removed by ocfs2_calc_xattr_set_need though, so we must restore it. Signed-off-by: Tao Ma <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2/xattr: Fix a bug in xattr allocation estimationTao Ma1-1/+3
When we extend one xattr's value to a large size, the old value size might be smaller than the size of a value root. In those cases, we still need to guess the metadata allocation. Reported-by: Tiger Yang <[email protected]> Signed-off-by: Tao Ma <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Remove JBD compatibility layerMark Fasheh6-143/+3
JBD2 is fully backwards compatible with JBD and it's been tested enough with Ocfs2 that we can clean this code up now. Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Convert ocfs2_read_dir_block() to ocfs2_read_virt_blocks()Joel Becker1-33/+5
Now that we've centralized the ocfs2_read_virt_blocks() code, let's use it in ocfs2_read_dir_block(). Signed-off-by: Joel Becker <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Wrap virtual block reads in ocfs2_read_virt_blocks()Joel Becker2-0/+95
The ocfs2_read_dir_block() function really maps an inode's virtual blocks to physical ones before calling ocfs2_read_blocks(). Let's extract that to common code, because other places might want to do that. Other than the block number being virtual, ocfs2_read_virt_blocks() takes the same arguments as ocfs2_read_blocks(). It converts those virtual block numbers to physical before calling ocfs2_read_blocks() directly. If the blocks asked for are discontiguous, this can mean multiple calls to ocfs2_read_blocks(), but this is mostly hidden from the caller. Like ocfs2_read_blocks(), the caller can pass in an existing buffer_head. This is usually done to pick up some readahead I/O. ocfs2_read_virt_blocks() checks the buffer_head's block number against the extent map - it must match. Signed-off-by: Joel Becker <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Validate metadata only when it's read from disk.Joel Becker10-97/+149
Add an optional validation hook to ocfs2_read_blocks(). Now the validation function is only called when a block was actually read off of disk. It is not called when the buffer was in cache. We add a buffer state bit BH_NeedsValidate to flag these buffers. It must always be one higher than the last JBD2 buffer state bit. The dinode, dirblock, extent_block, and xattr_block validators are lifted to this scheme directly. The group_descriptor validator needs to be split into two pieces. The first part only needs the gd buffer and is passed to ocfs2_read_block(). The second part requires the dinode as well, and is called every time. It's only 3 compares, so it's tiny. This also allows us to clean up the non-fatal gd check used by resize.c. It now has no magic argument. Signed-off-by: Joel Becker <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Wrap xattr block reads in a dedicated functionJoel Becker1-24/+70
We weren't consistently checking xattr blocks after we read them. Most places checked the signature, but none checked xb_blkno or xb_fs_signature. Create a toplevel ocfs2_read_xattr_block() that does the read and the validation. Signed-off-by: Joel Becker <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Wrap dirblock reads in a dedicated function.Joel Becker1-62/+88
We have ocfs2_bread() as a vestige of the original ext-based dir code. It's only used by directories, though. Turn it into ocfs2_read_dir_block(), with a prototype matching the other metadata read functions. It's set up to validate dirblocks when the time comes. Signed-off-by: Joel Becker <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Wrap extent block reads in a dedicated function.Joel Becker4-79/+111
We weren't consistently checking extent blocks after we read them. Most places checked the signature, but none checked h_blkno or h_fs_signature. Create a toplevel ocfs2_read_extent_block() that does the read and the validation. Signed-off-by: Joel Becker <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Morph the haphazard OCFS2_IS_VALID_GROUP_DESC() checks.Joel Becker2-32/+14
Random places in the code would check a group descriptor bh to see if it was valid. The previous commit unified descriptor block reads, validating all block reads in the same place. Thus, these checks are no longer necessary. Rather than eliminate them, however, we change them to BUG_ON() checks. This ensures the assumptions remain true. All of the code paths to these checks have been audited to ensure they come from a validated descriptor read. Signed-off-by: Joel Becker <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
2009-01-05ocfs2: Wrap group descriptor reads in a dedicated function.Joel Becker3-61/+78
We have a clean call for validating group descriptors, but every place that wants the always does a read_block()+validate() call pair. Create a toplevel ocfs2_read_group_descriptor() that does the right thing. This allows us to leverage the single call point later for fancier handling. We also add validation of gd->bg_generation against the superblock and gd->bg_blkno against the block we thought we read. Signed-off-by: Joel Becker <[email protected]> Signed-off-by: Mark Fasheh <[email protected]>
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