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ext4: indicate via a block bitmap read is prefetched via a tracepoint

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Modify the ext4_read_block_bitmap_load tracepoint so that it tells us
whether a block bitmap is being prefetched.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Artem Blagodarenko <artem.blagodarenko@gmail.com>
This commit is contained in:
Theodore Ts'o
2020-07-15 11:48:55 -04:00
parent 529a781ee0
commit ab74c7b23f
2 changed files with 21 additions and 5 deletions
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2
fs/ext4/balloc.c
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@@ -494,7 +494,7 @@ ext4_read_block_bitmap_nowait(struct super_block *sb, ext4_group_t block_group,
* submit the buffer_head for reading
*/
set_buffer_new(bh);
trace_ext4_read_block_bitmap_load(sb, block_group);
trace_ext4_read_block_bitmap_load(sb, block_group, ignore_locked);
bh->b_end_io = ext4_end_bitmap_read;
get_bh(bh);
submit_bh(REQ_OP_READ, REQ_META | REQ_PRIO |