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authorOjaswin Mujoo <ojaswin@linux.ibm.com>2023-05-30 15:33:43 +0300
committerTheodore Ts'o <tytso@mit.edu>2023-06-27 02:34:56 +0300
commitfdd9a00943a5f6687937628e01506dad697c9140 (patch)
tree2e59e98f58f67ccbc97c660477f35d12f1e0aa57 /fs/ext4/mballoc.h
parent4eb7a4a1a33bdaf259fca8528f2546c90ad18f0d (diff)
downloadlinux-fdd9a00943a5f6687937628e01506dad697c9140.tar.xz
ext4: Add per CR extent scanned counter
This gives better visibility into the number of extents scanned in each particular CR. For example, this information can be used to see how out block group scanning logic is performing when the BG is fragmented. Signed-off-by: Ojaswin Mujoo <ojaswin@linux.ibm.com> Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/55bb6d80f6e22ed2a5a830aa045572bdffc8b1b9.1685449706.git.ojaswin@linux.ibm.com Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/mballoc.h')
-rw-r--r--fs/ext4/mballoc.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h
index 24b666e558f1..acfdc204e15d 100644
--- a/fs/ext4/mballoc.h
+++ b/fs/ext4/mballoc.h
@@ -184,6 +184,7 @@ struct ext4_allocation_context {
__u16 ac_groups_scanned;
__u16 ac_groups_linear_remaining;
__u16 ac_found;
+ __u16 ac_cX_found[EXT4_MB_NUM_CRS];
__u16 ac_tail;
__u16 ac_buddy;
__u8 ac_status;