BMC/Intel-BMC/linux.git/fs/btrfs/qgroup.c, branch dev

btrfs: qgroup: Fix a regression in qgroup reserved space.

2015-08-06T21:51:15+00:00

During the change to new btrfs extent-oriented qgroup implement, due to it doesn't use the old __qgroup_excl_accounting() for exclusive extent, it didn't free the reserved bytes. The bug will cause limit function go crazy as the reserved space is never freed, increasing limit will have no effect and still cause EQOUT. The fix is easy, just free reserved bytes for newly created exclusive extent as what it does before. Reported-by: Tsutomu Itoh Signed-off-by: Yang Dongsheng Signed-off-by: Qu Wenruo Signed-off-by: Chris Mason

btrfs: qgroup: allow user to clear the limitation on qgroup

2015-06-30T20:20:00+00:00

Currently, we can only set a limitation on a qgroup, but we can not clear it. This patch provide a choice to user to clear a limitation on qgroup by passing a value of CLEAR_VALUE(-1) to kernel. Reported-by: Tsutomu Itoh Signed-off-by: Dongsheng Yang Tested-by: Tsutomu Itoh Signed-off-by: Chris Mason

btrfs: qgroup: Add the ability to skip given qgroup for old/new_roots.

2015-06-10T16:26:23+00:00

This is used by later qgroup fix patches for snapshot. As current snapshot accounting is done by btrfs_qgroup_inherit(), but new extent oriented quota mechanism will account extent from btrfs_copy_root() and other snapshot things, causing wrong result. So add this ability to handle snapshot accounting. Signed-off-by: Qu Wenruo Signed-off-by: Chris Mason

btrfs: qgroup: Cleanup the old ref_node-oriented mechanism.

2015-06-10T16:26:11+00:00

Goodbye, the old mechanisim. Signed-off-by: Qu Wenruo Signed-off-by: Chris Mason

btrfs: qgroup: Switch self test to extent-oriented qgroup mechanism.

2015-06-10T16:26:05+00:00

Since the self test transaction don't have delayed_ref_roots, so use find_all_roots() and export btrfs_qgroup_account_extent() to simulate it Signed-off-by: Qu Wenruo Signed-off-by: Chris Mason

btrfs: qgroup: Switch rescan to new mechanism.

2015-06-10T16:25:54+00:00

Switch rescan to use the new new extent oriented mechanism. As rescan is also based on extent, new mechanism is just a perfect match for rescan. With re-designed internal functions, rescan is quite easy, just call btrfs_find_all_roots() and then btrfs_qgroup_account_one_extent(). Signed-off-by: Qu Wenruo Signed-off-by: Chris Mason

btrfs: qgroup: Add new qgroup calculation function

2015-06-10T16:25:49+00:00

btrfs_qgroup_account_extents(). The new btrfs_qgroup_account_extents() function should be called in btrfs_commit_transaction() and it will update all the qgroup according to delayed_ref_root->dirty_extent_root. The new function can handle both normal operation during commit_transaction() or in rescan in a unified method with clearer logic. Signed-off-by: Qu Wenruo Signed-off-by: Chris Mason

btrfs: qgroup: Add new function to record old_roots.

2015-06-10T16:25:39+00:00

Add function btrfs_qgroup_prepare_account_extents() to get old_roots which are needed for qgroup. We do it in commit_transaction() and before switch_roots(), and only search commit_root, so it gives a quite accurate view for previous transaction. With old_roots from previous transaction, we can use it to do accurate account with current transaction. Signed-off-by: Qu Wenruo Signed-off-by: Chris Mason

btrfs: qgroup: Record possible quota-related extent for qgroup.

2015-06-10T16:25:32+00:00

Add hook in add_delayed_ref_head() to record quota-related extent record into delayed_ref_root->dirty_extent_record rb-tree for later qgroup accounting. Signed-off-by: Qu Wenruo Signed-off-by: Chris Mason

btrfs: qgroup: Add function qgroup_update_counters().

2015-06-10T16:25:28+00:00

Add function qgroup_update_counters(), which will update related qgroups' rfer/excl according to old/new_roots. This is one of the two core functions for the new qgroup implement. This is based on btrfs_adjust_coutners() but with clearer logic and comment. Signed-off-by: Qu Wenruo Signed-off-by: Chris Mason