ext3/balloc.c: local functions should be static

This quites the sparse noise:

warning: symbol 'ext3_trim_all_free' was not declared. Should it be static?

Signed-off-by: H Hartley Sweeten <[e-mail]>
Cc: Jan Kara <[e-mail]>
Cc: Andrew Morton <[e-mail]>
Cc: Andreas Dilger <[e-mail]>
Signed-off-by: Jan Kara <[e-mail]>

fs/ext3/balloc.c

···
  * reaches any used block. Then issue a TRIM command on this extent and free
  * the extent in the block bitmap. This is done until whole group is scanned.
  */
-ext3_grpblk_t ext3_trim_all_free(struct super_block *sb, unsigned int group,
-				ext3_grpblk_t start, ext3_grpblk_t max,
-				ext3_grpblk_t minblocks)
+static ext3_grpblk_t ext3_trim_all_free(struct super_block *sb,
+					unsigned int group,
+					ext3_grpblk_t start, ext3_grpblk_t max,
+					ext3_grpblk_t minblocks)
 {
 	handle_t *handle;
 	ext3_grpblk_t next, free_blocks, bit, freed, count = 0;