kernel.git/include/trace/events/btrfs.h, branch linux-4.12.y

btrfs: qgroup: Add trace point for qgroup reserved space

2017-04-18T12:07:26Z

Introduce the following trace points: qgroup_update_reserve qgroup_meta_reserve These trace points are handy to trace qgroup reserve space related problems. Also export btrfs_qgroup structure, as now we directly pass btrfs_qgroup structure to trace points, so that structure needs to be exported. Signed-off-by: Qu Wenruo Reviewed-by: David Sterba Signed-off-by: David Sterba

Btrfs: add file item tracepoints

2017-04-18T12:07:24Z

While debugging truncate problems, I found that these tracepoints could help us quickly know what went wrong. Two sets of tracepoints are created to track regular/prealloc file item and inline file item respectively, I put inline as a separate one since what inline file items cares about are way less than the regular one. This adds four tracepoints: - btrfs_get_extent_show_fi_regular - btrfs_get_extent_show_fi_inline - btrfs_truncate_show_fi_regular - btrfs_truncate_show_fi_inline Cc: David Sterba Signed-off-by: Liu Bo Reviewed-by: David Sterba [ formatting adjustments ] Signed-off-by: David Sterba

btrfs: convert btrfs_ordered_extent.refs from atomic_t to refcount_t

2017-04-18T12:07:23Z

refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova Signed-off-by: Hans Liljestrand Signed-off-by: Kees Cook Signed-off-by: David Windsor Signed-off-by: David Sterba

btrfs: convert extent_map.refs from atomic_t to refcount_t

2017-04-18T12:07:23Z

btrfs: Make btrfs_ino take a struct btrfs_inode

2017-02-14T14:50:51Z

Currently btrfs_ino takes a struct inode and this causes a lot of internal btrfs functions which consume this ino to take a VFS inode, rather than btrfs' own struct btrfs_inode. In order to fix this "leak" of VFS structs into the internals of btrfs first it's necessary to eliminate all uses of struct inode for the purpose of inode. This patch does that by using BTRFS_I to convert an inode to btrfs_inode. With this problem eliminated subsequent patches will start eliminating the passing of struct inode altogether, eventually resulting in a lot cleaner code. Signed-off-by: Nikolay Borisov [ fix btrfs_get_extent tracepoint prototype ] Signed-off-by: David Sterba

btrfs: make tracepoint format strings more compact

2017-01-09T10:27:07Z

We've recently added the fsid to trace events, this makes the line quite long. To reduce the it again, remove extra spaces around = and remove ",". Signed-off-by: David Sterba

Btrfs: add truncated_len for ordered extent tracepoints

2017-01-09T10:27:07Z

This can help us monitor truncated ordered extents. Signed-off-by: Liu Bo Reviewed-by: David Sterba Signed-off-by: David Sterba

Btrfs: add 'inode' for extent map tracepoint

2017-01-09T10:27:02Z

'inode' is an important field for btrfs_get_extent, lets trace it. Signed-off-by: Liu Bo Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: fix crash when tracepoint arguments are freed by wq callbacks

2017-01-09T10:24:50Z

Enabling btrfs tracepoints leads to instant crash, as reported. The wq callbacks could free the memory and the tracepoints started to dereference the members to get to fs_info. The proposed fix https://marc.info/?l=linux-btrfs&m=148172436722606&w=2 removed the tracepoints but we could preserve them by passing only the required data in a safe way. Fixes: bc074524e123 ("btrfs: prefix fsid to all trace events") CC: stable@vger.kernel.org # 4.8+ Reported-by: Sebastian Andrzej Siewior Reviewed-by: Qu Wenruo Signed-off-by: David Sterba

btrfs: convert extent-tree tracepoints to use fs_info

2016-12-06T15:06:59Z

The extent-tree tracepoints all operate on the extent root, regardless of which root is passed in. Let's just use the extent root objectid instead. If it turns out that nobody is depending on the format of this tracepoint, we can drop the root printing entirely. Signed-off-by: Jeff Mahoney Signed-off-by: David Sterba