From: Harshad Shirwadkar <harshadshirwadkar@xxxxxxxxx>
This patch supports creation of freespace trees for prefetched block
bitmaps.
Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@xxxxxxxxx>
---
fs/ext4/mballoc.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 4b1c405543f0..168e9708257f 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3137,6 +3137,9 @@ ext4_group_t ext4_mb_prefetch(struct super_block *sb, ext4_group_t group,
void ext4_mb_prefetch_fini(struct super_block *sb, ext4_group_t group,
unsigned int nr)
{
+ struct ext4_buddy e4b;
+ int ret;
+
while (nr-- > 0) {
struct ext4_group_desc *gdp = ext4_get_group_desc(sb, group,
NULL);
@@ -3151,8 +3154,15 @@ void ext4_mb_prefetch_fini(struct super_block *sb, ext4_group_t group,
ext4_free_group_clusters(sb, gdp) > 0 &&
!(ext4_has_group_desc_csum(sb) &&
(gdp->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT)))) {
- if (ext4_mb_init_group(sb, group, GFP_NOFS))
+ if (ext4_mb_frsp_on(sb)) {
+ ret = ext4_mb_load_allocator(sb, group, &e4b,
+ 0);
+ if (ret)
+ break;
+ ext4_mb_unload_allocator(&e4b);
+ } else if (ext4_mb_init_group(sb, group, GFP_NOFS)) {
break;
+ }
}
}
}
--
2.28.0.297.g1956fa8f8d-goog
