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| author |   Miklos Szeredi <mszeredi@suse.cz> | 2015-06-22 13:53:48 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@suse.cz> | 2015-06-22 13:53:48 +0200 |
| commit | cdb672795876d7bc1870aed9a2d7cb59f43d1d96 (patch) | |
| tree | 83f520fa3fc7ccf117e821e6707c9de25b9e989b /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | ovl: allow distributed fs as lower layer (diff) | |
| download | linux-dev-cdb672795876d7bc1870aed9a2d7cb59f43d1d96.tar.xz linux-dev-cdb672795876d7bc1870aed9a2d7cb59f43d1d96.zip | |
ovl: lookup whiteouts outside iterate_dir()
If jffs2 can deadlock on overlayfs readdir because it takes the same lock
on ->iterate() as in ->lookup().
Fix by moving whiteout checking outside iterate_dir(). Optimized by
collecting potential whiteouts (DT_CHR) in a temporary list and if
non-empty iterating throug these and checking for a 0/0 chardev.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Fixes: 49c21e1cacd7 ("ovl: check whiteout while reading directory")
Reported-by: Roman Yeryomin <leroi.lists@gmail.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions