[LU-5051] HSM recv buffer reallocated unnecessarily

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.6.0, Lustre 2.5.4
• Affects Version/s: Lustre 2.5.0, Lustre 2.6.0
• Labels: hsm patch
• Assignee: Cliff White (Inactive)
• Reporter: Patrick Farrell (Inactive)

Description

Currently, the 1 MB buffer used by llapi_hsm_copytool_recv is allocated and freed every time through the ct_run loop.

This is unnecessary, as long as the copy tool clears the the data before calling llapi_hsm_copytool_recv, which lhsmtool_posix already does.

This patch allocates the buffer once in llapi_hsm_copytool_register and frees it in unregister.

Patch will be available in Gerrit shortly.