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| author | Ross Zwisler <ross.zwisler@linux.intel.com> | 2017-05-08 16:00:10 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-08 17:15:16 -0700 |
| commit | d14a3f48a152b75a1e690d443f509c07c7b06c0e (patch) | |
| tree | c1bbefd30f268f316d01e9aa1c98ed8588382b50 /fs/dax.c | |
| parent | 678c9fd0430a1431bd9901c76f41e04fcb3eac87 (diff) | |
| download | linux-d14a3f48a152b75a1e690d443f509c07c7b06c0e.tar.gz | |
dax: add tracepoints to dax_writeback_mapping_range()
Add tracepoints to dax_writeback_mapping_range(), following the same logging conventions as the rest of DAX. Here is an example writeback call: msync-1085 [006] .... 200.902565: dax_writeback_range: dev 259:0 ino 0x1003 pgoff 0x200-0x2ff msync-1085 [006] .... 200.902579: dax_writeback_range_done: dev 259:0 ino 0x1003 pgoff 0x200-0x2ff [ross.zwisler@linux.intel.com: fix regression in dax_writeback_mapping_range()] Link: http://lkml.kernel.org/r/20170314215358.31451-1-ross.zwisler@linux.intel.com Link: http://lkml.kernel.org/r/20170221195116.13278-5-ross.zwisler@linux.intel.com Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/dax.c')
| -rw-r--r-- | fs/dax.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/fs/dax.c b/fs/dax.c index 36fafff2e82f..7cf2686761e2 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -863,6 +863,8 @@ int dax_writeback_mapping_range(struct address_space *mapping, start_index = wbc->range_start >> PAGE_SHIFT; end_index = wbc->range_end >> PAGE_SHIFT; + trace_dax_writeback_range(inode, start_index, end_index); + tag_pages_for_writeback(mapping, start_index, end_index); pagevec_init(&pvec, 0); @@ -882,14 +884,14 @@ int dax_writeback_mapping_range(struct address_space *mapping, ret = dax_writeback_one(bdev, dax_dev, mapping, indices[i], pvec.pages[i]); - if (ret < 0) { - put_dax(dax_dev); - return ret; - } + if (ret < 0) + goto out; } } +out: put_dax(dax_dev); - return 0; + trace_dax_writeback_range_done(inode, start_index, end_index); + return (ret < 0 ? ret : 0); } EXPORT_SYMBOL_GPL(dax_writeback_mapping_range); |