[LU-4023] wrong type used for ldlm flag

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.5.0, Lustre 2.6.0, Lustre 2.4.2
• Affects Version/s: Lustre 2.4.0, Lustre 2.5.0
• Environment: clang 3.4
• Severity: 3
• Assignee: Dmitry Eremin (Inactive)
• Reporter: Alexey Lyashkov

Description

While porting lustre to macos i found a some strange behavior - likely wrong type used for variable.

osc_request.c:2503:41: error: implicit conversion from 'unsigned long long' to 'int' changes value from 2199023255552 to 0 [-Werror,-Wconstant-conversion]
        int match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY);
            ~~~~~~~~~                   ^~~~~~~~~~~~~~~~~
/Users/shadow/work/lustre/work/WC-review/mac-os/lustre/include/lustre_dlm_flags.h:244:41: note: expanded from macro 'LDLM_FL_LVB_READY'
#define LDLM_FL_LVB_READY               0x0000020000000000ULL // bit  41

so if we assign 64bit data to 32bit variable - we will be have zero always and that logic newer work.