The newly added xfs_finish_page_writeback() function causes
a harmless gcc warning when debugging is disabled:
fs/xfs/xfs_aops.c: In function 'xfs_finish_page_writeback':
fs/xfs/xfs_aops.c:97:16: error: unused variable 'blockmask' [-Werror=unused-variable]
unsigned int blockmask = (1 << inode->i_blkbits) - 1;
^~~~~~~~~
This adds an #ifdef around the variable declaration to hide
it whenever the ASSERT macro is defined as a stub, following
the same style as used elsewhere in xfs.
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Fixes: 37992c18bba3 ("xfs: don't release bios on completion immediately")
---
I originally sent this on April 16 when the warning first showed up
but got no reply. Sending it again now as the warning is still present
in linux-next.
fs/xfs/xfs_aops.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 8a5244e4c2e9..62d938c46f31 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -94,7 +94,9 @@ xfs_finish_page_writeback(
struct bio_vec *bvec,
int error)
{
+#if defined(DEBUG) || defined(XFS_WARN)
unsigned int blockmask = (1 << inode->i_blkbits) - 1;
+#endif
unsigned int end = bvec->bv_offset + bvec->bv_len - 1;
struct buffer_head *head, *bh;
unsigned int off = 0;
--
2.7.0
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