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Date: Tue, 3 Dec 2013 21:58:50 +0800
From: Peng Tao <bergwolf@...il.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org,
Dmitry Eremin <dmitry.eremin@...el.com>,
Ned Bass <bass6@...l.gov>, Peng Tao <bergwolf@...il.com>,
Andreas Dilger <andreas.dilger@...el.com>
Subject: [PATCH v3 12/15] staging/lustre: clean up SET_BUT_UNUSED/UNUSED macros
From: Dmitry Eremin <dmitry.eremin@...el.com>
This is SET_BUT_UNUSED/UNUSED macro cleaning up part
of the original Lustre tree commit.
Lustre-change: http://review.whamcloud.com/6139
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3204
Signed-off-by: Dmitry Eremin <dmitry.eremin@...el.com>
Signed-off-by: Ned Bass <bass6@...l.gov>
Reviewed-by: Oleg Drokin <oleg.drokin@...el.com>
Signed-off-by: Peng Tao <bergwolf@...il.com>
Signed-off-by: Andreas Dilger <andreas.dilger@...el.com>
---
.../staging/lustre/include/linux/libcfs/libcfs.h | 2 --
drivers/staging/lustre/lnet/selftest/rpc.c | 2 --
drivers/staging/lustre/lnet/selftest/selftest.h | 3 --
drivers/staging/lustre/lnet/selftest/timer.c | 11 ++-----
drivers/staging/lustre/lustre/llite/dcache.c | 34 ++++++++------------
5 files changed, 17 insertions(+), 35 deletions(-)
diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs.h b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
index 687dbab..4a6c7da 100644
--- a/drivers/staging/lustre/include/linux/libcfs/libcfs.h
+++ b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
@@ -181,8 +181,6 @@ static inline void *__container_of(void *ptr, unsigned long shift)
#define container_of0(ptr, type, member) \
((type *)__container_of((void *)(ptr), offsetof(type, member)))
-#define SET_BUT_UNUSED(a) do { } while(sizeof(a) - sizeof(a))
-
#define _LIBCFS_H
#endif /* _LIBCFS_H */
diff --git a/drivers/staging/lustre/lnet/selftest/rpc.c b/drivers/staging/lustre/lnet/selftest/rpc.c
index 7659a26..5ae59d2 100644
--- a/drivers/staging/lustre/lnet/selftest/rpc.c
+++ b/drivers/staging/lustre/lnet/selftest/rpc.c
@@ -124,7 +124,6 @@ srpc_bulk_t *
srpc_alloc_bulk(int cpt, unsigned bulk_npg, unsigned bulk_len, int sink)
{
srpc_bulk_t *bk;
- struct page **pages;
int i;
LASSERT(bulk_npg > 0 && bulk_npg <= LNET_MAX_IOV);
@@ -140,7 +139,6 @@ srpc_alloc_bulk(int cpt, unsigned bulk_npg, unsigned bulk_len, int sink)
bk->bk_sink = sink;
bk->bk_len = bulk_len;
bk->bk_niov = bulk_npg;
- UNUSED(pages);
for (i = 0; i < bulk_npg; i++) {
struct page *pg;
diff --git a/drivers/staging/lustre/lnet/selftest/selftest.h b/drivers/staging/lustre/lnet/selftest/selftest.h
index 8053b05..cd53926 100644
--- a/drivers/staging/lustre/lnet/selftest/selftest.h
+++ b/drivers/staging/lustre/lnet/selftest/selftest.h
@@ -572,9 +572,6 @@ swi_state2str (int state)
#undef STATE2STR
}
-#define UNUSED(x) ( (void)(x) )
-
-
#define selftest_wait_events() cfs_pause(cfs_time_seconds(1) / 10)
diff --git a/drivers/staging/lustre/lnet/selftest/timer.c b/drivers/staging/lustre/lnet/selftest/timer.c
index 82fd363..b8e50ef 100644
--- a/drivers/staging/lustre/lnet/selftest/timer.c
+++ b/drivers/staging/lustre/lnet/selftest/timer.c
@@ -171,19 +171,14 @@ stt_check_timers(cfs_time_t *last)
int
stt_timer_main(void *arg)
{
- int rc = 0;
- UNUSED(arg);
-
- SET_BUT_UNUSED(rc);
-
cfs_block_allsigs();
while (!stt_data.stt_shuttingdown) {
stt_check_timers(&stt_data.stt_prev_slot);
- rc = wait_event_timeout(stt_data.stt_waitq,
- stt_data.stt_shuttingdown,
- cfs_time_seconds(STTIMER_SLOTTIME));
+ wait_event_timeout(stt_data.stt_waitq,
+ stt_data.stt_shuttingdown,
+ cfs_time_seconds(STTIMER_SLOTTIME));
}
spin_lock(&stt_data.stt_lock);
diff --git a/drivers/staging/lustre/lustre/llite/dcache.c b/drivers/staging/lustre/lustre/llite/dcache.c
index e7629be..cbd663e 100644
--- a/drivers/staging/lustre/lustre/llite/dcache.c
+++ b/drivers/staging/lustre/lustre/llite/dcache.c
@@ -404,7 +404,6 @@ int ll_revalidate_it(struct dentry *de, int lookup_flags,
struct inode *inode = de->d_inode;
struct ll_inode_info *lli = ll_i2info(inode);
struct obd_client_handle **och_p;
- __u64 *och_usecount;
__u64 ibits;
/*
@@ -418,37 +417,32 @@ int ll_revalidate_it(struct dentry *de, int lookup_flags,
*/
- if (it->it_flags & FMODE_WRITE) {
+ if (it->it_flags & FMODE_WRITE)
och_p = &lli->lli_mds_write_och;
- och_usecount = &lli->lli_open_fd_write_count;
- } else if (it->it_flags & FMODE_EXEC) {
+ else if (it->it_flags & FMODE_EXEC)
och_p = &lli->lli_mds_exec_och;
- och_usecount = &lli->lli_open_fd_exec_count;
- } else {
+ else
och_p = &lli->lli_mds_read_och;
- och_usecount = &lli->lli_open_fd_read_count;
- }
+
/* Check for the proper lock. */
ibits = MDS_INODELOCK_LOOKUP;
if (!ll_have_md_lock(inode, &ibits, LCK_MINMODE))
goto do_lock;
mutex_lock(&lli->lli_och_mutex);
if (*och_p) { /* Everything is open already, do nothing */
- /*(*och_usecount)++; Do not let them steal our open
- handle from under us */
- SET_BUT_UNUSED(och_usecount);
- /* XXX The code above was my original idea, but in case
- we have the handle, but we cannot use it due to later
- checks (e.g. O_CREAT|O_EXCL flags set), nobody
- would decrement counter increased here. So we just
- hope the lock won't be invalidated in between. But
- if it would be, we'll reopen the open request to
- MDS later during file open path */
+ /* Originally it was idea to do not let them steal our
+ * open handle from under us by (*och_usecount)++ here.
+ * But in case we have the handle, but we cannot use it
+ * due to later checks (e.g. O_CREAT|O_EXCL flags set),
+ * nobody would decrement counter increased here. So we
+ * just hope the lock won't be invalidated in between.
+ * But if it would be, we'll reopen the open request to
+ * MDS later during file open path.
+ */
mutex_unlock(&lli->lli_och_mutex);
return 1;
- } else {
- mutex_unlock(&lli->lli_och_mutex);
}
+ mutex_unlock(&lli->lli_och_mutex);
}
if (it->it_op == IT_GETATTR) {
--
1.7.9.5
--
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