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| author | Amir Goldstein <[email protected]> | 2024-04-07 15:57:57 +0000 |
|---|---|---|
| committer | Miklos Szeredi <[email protected]> | 2024-04-15 08:12:44 +0000 |
| commit | 7cc911262835419fe469ebfae89891c0e97c62ef (patch) | |
| tree | 8100455dddb40fbca0bf73b84136088469e4a779 /tools/perf/scripts/python/net_dropmonitor.py | |
| parent | fuse: fix wrong ff->iomode state changes from parallel dio write (diff) | |
| download | kernel-7cc911262835419fe469ebfae89891c0e97c62ef.tar.gz kernel-7cc911262835419fe469ebfae89891c0e97c62ef.zip | |
fuse: fix parallel dio write on file open in passthrough mode
Parallel dio write takes a negative refcount of fi->iocachectr and so does
open of file in passthrough mode.
The refcount of passthrough mode is associated with attach/detach of a
fuse_backing object to fuse inode.
For parallel dio write, the backing file is irrelevant, so the call to
fuse_inode_uncached_io_start() passes a NULL fuse_backing object.
Passing a NULL fuse_backing will result in false -EBUSY error if the file
is already open in passthrough mode.
Allow taking negative fi->iocachectr refcount with NULL fuse_backing,
because it does not conflict with an already attached fuse_backing object.
Fixes: 4a90451bbc7f ("fuse: implement open in passthrough mode")
Signed-off-by: Amir Goldstein <[email protected]>
Signed-off-by: Miklos Szeredi <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/net_dropmonitor.py')
0 files changed, 0 insertions, 0 deletions