diff options
| author | Matthew Wilcox <[email protected]> | 2015-09-08 14:59:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2015-09-08 15:35:28 -0700 |
| commit | 01a33b4ace68bc35679a347f21d5ed6e222e30dc (patch) | |
| tree | f65f2883e5c1f46691eea046e5986a28558cb687 /tools/perf/scripts/python/net_dropmonitor.py | |
| parent | ed923b5776a2d2e949bd5b20f3956d68f3c826b7 (diff) | |
ext4: start transaction before calling into DAX
Jan Kara pointed out that in the case where we are writing to a hole, we
can end up with a lock inversion between the page lock and the journal
lock. We can avoid this by starting the transaction in ext4 before
calling into DAX. The journal lock nests inside the superblock
pagefault lock, so we have to duplicate that code from dax_fault, like
XFS does.
Signed-off-by: Matthew Wilcox <[email protected]>
Cc: Jan Kara <[email protected]>
Cc: Theodore Ts'o <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/net_dropmonitor.py')
0 files changed, 0 insertions, 0 deletions