[LU-14145] protect cli->cl_import with with_imp_locked()

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Severity: 3
• Assignee: Neil Brown
• Reporter: Jian Yu

Description

Protect cli->cl_import with with_imp_locked():

/* You must use these macros when you want to refer to
 * the import in a client obd_device for a lprocfs entry
 */
#define with_imp_locked(__obd, __imp, __rc)                             \
        for (down_read(&(__obd)->u.cli.cl_sem),                         \
             __imp = (__obd)->u.cli.cl_import,                          \
             __rc = __imp ? 0 : -ENODEV;                                \
             __imp ? 1 : (up_read(&(__obd)->u.cli.cl_sem), 0);          \
             __imp = NULL)

Issue Links

• is related to: LU-9855 Clean up obdclass preprocessor code
• is related to: LU-12511 Prepare lustre for adoption into the linux kernel
• is related to: LU-13503 allow setting larger max_mod_rpcs_in_flight dynamically