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24fa20340d
In current implementation, only zio buffers in 16KB and bigger are guaranteed PAGESIZE alignment. This breaks Lustre since it assumes that 'arc_buf_t::b_data' must be page aligned when zio buffers are greater than or equal to PAGESIZE. This patch will make the zio buffers to be PAGESIZE aligned when the sizes are not less than PAGESIZE. This change may cause a little bit memory waste but that should be fine because after ABD is introduced, zio buffers are used to hold data temporarily and live in memory for a short while. Reviewed-by: Don Brady <don.brady@intel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Jinshan Xiong <jinshan.xiong@gmail.com> Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com> Closes #6084 |
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