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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-03 16:11:27 (GMT) |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-04 18:05:44 (GMT) |
| commit | f65306ea5246ef3ff68a6abf85f5a73a04903366 (patch) | |
| tree | 2c2f8ae61ce162c8c79cd5b8ea86266331ec83a6 /fs/xfs/xfs_trace.h | |
| parent | 77d61fe45e720577a2cc0e9580fbc57d8faa7232 (diff) | |
| download | linux-f65306ea5246ef3ff68a6abf85f5a73a04903366.tar.xz | |
xfs: map an inode's offset to an exact physical block
Teach the bmap routine to know how to map a range of file blocks to a
specific range of physical blocks, instead of simply allocating fresh
blocks. This enables reflink to map a file to blocks that are already
in use.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/xfs_trace.h')
| -rw-r--r-- | fs/xfs/xfs_trace.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index 9c9acef..e44992a 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -2968,6 +2968,60 @@ TRACE_EVENT(xfs_refcount_finish_one_leftover, __entry->new_len) ); +/* simple inode-based error/%ip tracepoint class */ +DECLARE_EVENT_CLASS(xfs_inode_error_class, + TP_PROTO(struct xfs_inode *ip, int error, unsigned long caller_ip), + TP_ARGS(ip, error, caller_ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(int, error) + __field(unsigned long, caller_ip) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->error = error; + __entry->caller_ip = caller_ip; + ), + TP_printk("dev %d:%d ino %llx error %d caller %ps", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->error, + (char *)__entry->caller_ip) +); + +#define DEFINE_INODE_ERROR_EVENT(name) \ +DEFINE_EVENT(xfs_inode_error_class, name, \ + TP_PROTO(struct xfs_inode *ip, int error, \ + unsigned long caller_ip), \ + TP_ARGS(ip, error, caller_ip)) + +/* reflink allocator */ +TRACE_EVENT(xfs_bmap_remap_alloc, + TP_PROTO(struct xfs_inode *ip, xfs_fsblock_t fsbno, + xfs_extlen_t len), + TP_ARGS(ip, fsbno, len), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(xfs_fsblock_t, fsbno) + __field(xfs_extlen_t, len) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->fsbno = fsbno; + __entry->len = len; + ), + TP_printk("dev %d:%d ino 0x%llx fsbno 0x%llx len %x", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->fsbno, + __entry->len) +); +DEFINE_INODE_ERROR_EVENT(xfs_bmap_remap_alloc_error); + #endif /* _TRACE_XFS_H */ #undef TRACE_INCLUDE_PATH |