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staging/lustre/lvfs: fix building without CONFIG_PROC_FS

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Patch "staging/lustre/lvfs: remove the lvfs layer" moved some code around
that was previously only built when CONFIG_PROC_FS was set, which now
causes an invalid access to the obd_memory variable:

ERROR: "obd_memory" [drivers/staging/lustre/lustre/obdclass/obdclass.ko] undefined!

This fixes it by using adding a compile-time check around the access.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: fdedd94509 ("staging/lustre/lvfs: remove the lvfs layer")
Cc: James Simmons <uja.ornl@gmail.com>
Cc: Mikhail Pershin <mike.pershin@intel.com>
Cc: John L. Hammond <john.hammond@intel.com>
Cc: Jian Yu <jian.yu@intel.com>
Cc: Bob Glossman <bob.glossman@intel.com>
Cc: Oleg Drokin <oleg.drokin@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Arnd Bergmann 2014-09-29 14:47:45 +02:00 committed by Greg Kroah-Hartman
parent e31981a13d
commit 372d5b5607
1 changed files with 16 additions and 13 deletions
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29
drivers/staging/lustre/lustre/obdclass/class_obd.c
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@ -534,20 +534,23 @@ static int __init init_obdclass(void)
spin_lock_init(&obd_types_lock);
obd_zombie_impexp_init();
obd_memory = lprocfs_alloc_stats(OBD_STATS_NUM,
LPROCFS_STATS_FLAG_NONE |
LPROCFS_STATS_FLAG_IRQ_SAFE);
if (obd_memory == NULL) {
CERROR("kmalloc of 'obd_memory' failed\n");
return -ENOMEM;
}
if (IS_ENABLED(CONFIG_PROC_FS)) {
obd_memory = lprocfs_alloc_stats(OBD_STATS_NUM,
LPROCFS_STATS_FLAG_NONE |
LPROCFS_STATS_FLAG_IRQ_SAFE);
lprocfs_counter_init(obd_memory, OBD_MEMORY_STAT,
LPROCFS_CNTR_AVGMINMAX,
"memused", "bytes");
lprocfs_counter_init(obd_memory, OBD_MEMORY_PAGES_STAT,
LPROCFS_CNTR_AVGMINMAX,
"pagesused", "pages");
if (obd_memory == NULL) {
CERROR("kmalloc of 'obd_memory' failed\n");
return -ENOMEM;
}
lprocfs_counter_init(obd_memory, OBD_MEMORY_STAT,
LPROCFS_CNTR_AVGMINMAX,
"memused", "bytes");
lprocfs_counter_init(obd_memory, OBD_MEMORY_PAGES_STAT,
LPROCFS_CNTR_AVGMINMAX,
"pagesused", "pages");
}
err = obd_init_checks();
if (err == -EOVERFLOW)