- 05 Jan, 2009 40 commits
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Tao Ma authored
Fix 2 minor things in quota. They are both found by sparse check. 1. an endian bug in ocfs2_local_quota_add_chunk. 2. change olq_alloc_dquot to static. Signed-off-by:
Tao Ma <tao.ma@oracle.com> Signed-off-by:
Mark Fasheh <mfasheh@suse.com>
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Tao Ma authored
Signed-off-by:
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Jan Kara authored
Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
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Jan Kara authored
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Jan Kara authored
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Jan Kara authored
These are default functions for creating and destroying quota structures and they should be used from filesystems. Signed-off-by:
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Jan Kara authored
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:
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Jan Kara authored
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:
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Jan Kara authored
Make function return error status and not buffer pointer so that it's consistent with ocfs2_read_quota_block(). Signed-off-by:
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Jan Kara authored
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:
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Joel Becker authored
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 <joel.becker@oracle.com> Acked-by:
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Jan Kara authored
Add missing variable initialization to ocfs2_dquot_drop_slow(). Signed-off-by:
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Mark Fasheh authored
This is safer. We no longer have to worry about tracking changes to jbd_state_bits. Signed-off-by: -
Mark Fasheh authored
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" <tytso@mit.edu> Signed-off-by:
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Jan Kara authored
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:
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Jan Kara authored
Implement functions for recovery after a crash. Functions just read local quota file and sync info to global quota file. Signed-off-by:
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Mark Fasheh authored
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:
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Jan Kara authored
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:
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Jan Kara authored
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:
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Jan Kara authored
Mark system files as not subject to quota accounting. This prevents possible recursions into quota code and thus deadlocks. Signed-off-by:
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Jan Kara authored
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Jan Kara authored
OCFS2 can easily support nested transactions. We just have to take care and not spoil statistics acquire semaphore unnecessarily. Signed-off-by:
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Jan Kara authored
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:
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Jan Kara authored
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:
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Jan Kara authored
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:
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Jan Kara authored
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:
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Jan Kara authored
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:
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Jan Kara authored
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:
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Jan Kara authored
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:
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Jan Kara authored
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:
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Jan Kara authored
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:
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Jan Kara authored
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Jan Kara authored
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Jan Kara authored
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Jan Kara authored
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Jan Kara authored
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:
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Jan Kara authored
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:
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Jan Kara authored
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:
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Jan Kara authored
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:
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Jan Kara authored
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:
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