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-rw-r--r--fs/ext4/mballoc.c49
1 files changed, 27 insertions, 22 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 254f1f9..38a11bf 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4810,19 +4810,25 @@ static void ext4_trim_extent(struct super_block *sb, int start, int count,
* the group buddy bitmap. This is done until whole group is scanned.
*/
static ext4_grpblk_t
-ext4_trim_all_free(struct super_block *sb, struct ext4_buddy *e4b,
- ext4_grpblk_t start, ext4_grpblk_t max, ext4_grpblk_t minblocks)
+ext4_trim_all_free(struct super_block *sb, ext4_group_t group,
+ ext4_grpblk_t start, ext4_grpblk_t max,
+ ext4_grpblk_t minblocks)
{
void *bitmap;
ext4_grpblk_t next, count = 0;
- ext4_group_t group;
+ struct ext4_buddy e4b;
+ int ret;
- BUG_ON(e4b == NULL);
+ ret = ext4_mb_load_buddy(sb, group, &e4b);
+ if (ret) {
+ ext4_error(sb, "Error in loading buddy "
+ "information for %u", group);
+ return ret;
+ }
- bitmap = e4b->bd_bitmap;
- group = e4b->bd_group;
- start = (e4b->bd_info->bb_first_free > start) ?
- e4b->bd_info->bb_first_free : start;
+ bitmap = e4b.bd_bitmap;
+ start = (e4b.bd_info->bb_first_free > start) ?
+ e4b.bd_info->bb_first_free : start;
ext4_lock_group(sb, group);
while (start < max) {
@@ -4833,7 +4839,7 @@ ext4_trim_all_free(struct super_block *sb, struct ext4_buddy *e4b,
if ((next - start) >= minblocks) {
ext4_trim_extent(sb, start,
- next - start, group, e4b);
+ next - start, group, &e4b);
count += next - start;
}
start = next + 1;
@@ -4849,10 +4855,11 @@ ext4_trim_all_free(struct super_block *sb, struct ext4_buddy *e4b,
ext4_lock_group(sb, group);
}
- if ((e4b->bd_info->bb_free - count) < minblocks)
+ if ((e4b.bd_info->bb_free - count) < minblocks)
break;
}
ext4_unlock_group(sb, group);
+ ext4_mb_unload_buddy(&e4b);
ext4_debug("trimmed %d blocks in the group %d\n",
count, group);
@@ -4874,11 +4881,11 @@ ext4_trim_all_free(struct super_block *sb, struct ext4_buddy *e4b,
*/
int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
{
- struct ext4_buddy e4b;
+ struct ext4_group_info *grp;
ext4_group_t first_group, last_group;
ext4_group_t group, ngroups = ext4_get_groups_count(sb);
ext4_grpblk_t cnt = 0, first_block, last_block;
- uint64_t start, len, minlen, trimmed;
+ uint64_t start, len, minlen, trimmed = 0;
ext4_fsblk_t first_data_blk =
le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block);
int ret = 0;
@@ -4886,7 +4893,6 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
start = range->start >> sb->s_blocksize_bits;
len = range->len >> sb->s_blocksize_bits;
minlen = range->minlen >> sb->s_blocksize_bits;
- trimmed = 0;
if (unlikely(minlen > EXT4_BLOCKS_PER_GROUP(sb)))
return -EINVAL;
@@ -4907,11 +4913,12 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
return -EINVAL;
for (group = first_group; group <= last_group; group++) {
- ret = ext4_mb_load_buddy(sb, group, &e4b);
- if (ret) {
- ext4_error(sb, "Error in loading buddy "
- "information for %u", group);
- break;
+ grp = ext4_get_group_info(sb, group);
+ /* We only do this if the grp has never been initialized */
+ if (unlikely(EXT4_MB_GRP_NEED_INIT(grp))) {
+ ret = ext4_mb_init_group(sb, group);
+ if (ret)
+ break;
}
/*
@@ -4924,16 +4931,14 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
last_block = first_block + len;
len -= last_block - first_block;
- if (e4b.bd_info->bb_free >= minlen) {
- cnt = ext4_trim_all_free(sb, &e4b, first_block,
+ if (grp->bb_free >= minlen) {
+ cnt = ext4_trim_all_free(sb, group, first_block,
last_block, minlen);
if (cnt < 0) {
ret = cnt;
- ext4_mb_unload_buddy(&e4b);
break;
}
}
- ext4_mb_unload_buddy(&e4b);
trimmed += cnt;
first_block = 0;
}
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