io_uring: ensure accurate real_file_size setup for full device access with PI enabled#1927
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axboe merged 1 commit intoJun 23, 2025
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… with PI enabled Fix real_file_size calculation when PI is enabled When PI is enabled, the extended LBA (lba_ext) should be used to calculate real_file_size instead of lba_size. This ensures FIO can access the entire device area correctly. Signed-off by: Suho Son <[email protected]>
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Description
When Protection Information (PI) is enabled on NVMe devices, the file size was incorrectly calculated using
data->lba_sizeinstead ofdata->lba_ext. This caused FIO to access only a portion of the device(e.g. 4096/(4096+64)=98.46%), leading to incomplete I/O coverage during tests.This patch updates the
real_file_sizecalculation logic to conditionally usedata->lba_extwhen available, and fall back todata->lba_sizeotherwise. This ensures that FIO correctly calculates the full storage capacity and accesses the entire device area when PI is enabled.Fixes
real_file_sizeassignment due to usinglba_sizeinstead oflba_ext