This introduces fls in lustre/ldlm/ldlm_extent.c
to find the last set bit.
It also fixes the following checkpatch.pl warning in
lustre/ldlm/ldlm_extent.c
WARNING: space prohibited before semicolon.
The patch also fixes the following checkpatch.pl error in
lustre/ldlm/ldlm_extent.c
ERROR: trailing statements should be on next line
Signed-off-by: Monam Agarwal <monamagarwal123@xxxxxxxxx>
---
Changes since v1:
*Incorrect commit message
*Use of fls function
drivers/staging/lustre/lustre/ldlm/ldlm_extent.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_extent.c b/drivers/staging/lustre/lustre/ldlm/ldlm_extent.c
index ac5d66a..e6fe2cb 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_extent.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_extent.c
@@ -150,10 +150,12 @@ struct ldlm_interval *ldlm_interval_detach(struct ldlm_lock *l)
static inline int lock_mode_to_index(ldlm_mode_t mode)
{
int index;
+ int len;
LASSERT(mode != 0);
LASSERT(IS_PO2(mode));
- for (index = -1; mode; index++, mode >>= 1) ;
+ len = fls(mode);
+ index = len-1;
LASSERT(index < LCK_MODE_NUM);
return index;
}
--
1.7.9.5
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