QDMA: Handle sync kiocb in async I/O path for readv/writev support#381
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heeuid wants to merge 1 commit intoXilinx:masterfrom
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QDMA: Handle sync kiocb in async I/O path for readv/writev support#381heeuid wants to merge 1 commit intoXilinx:masterfrom
heeuid wants to merge 1 commit intoXilinx:masterfrom
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Signed-off-by: sunghee <h33uid@gmail.com>
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Description
This PR fixes a kernel panic occurring when synchronous system calls (e.g.,
readv/writev) invoke the AIO path. These calls do not initializeki_complete, leading to aNULLpointer dereference in the completion callback.Changes
struct cdev_async_io: Added completion field to support synchronous contexts.cdev_aio_read/write(): Useis_sync_kiocb()to distinguish betweensyncandasync, and wait for completion insyncmode to ensure safe resource deallocation.