This is a note to let you know that I've just added the patch titled
ext4: remove unused parameter from ext4_mb_new_blocks_simple()
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ext4-remove-unused-parameter-from-ext4_mb_new_blocks.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d46e6f057918e6e4e85c327afc1909443b9ea5e6
Author: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
Date: Sat Jun 3 23:03:17 2023 +0800
ext4: remove unused parameter from ext4_mb_new_blocks_simple()
[ Upstream commit ad78b5efe4246e5deba8d44a6ed172b8a00d3113 ]
Two cleanups for ext4_mb_new_blocks_simple:
Remove unused parameter handle of ext4_mb_new_blocks_simple.
Move ext4_mb_new_blocks_simple definition before ext4_mb_new_blocks to
remove unnecessary forward declaration of ext4_mb_new_blocks_simple.
Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
Reviewed-by: Ojaswin Mujoo <ojaswin@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230603150327.3596033-10-shikemeng@xxxxxxxxxxxxxxx
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Stable-dep-of: 3f4830abd236 ("ext4: fix potential unnitialized variable")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index de69929495a5a..099007ec774c7 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -5083,8 +5083,72 @@ static bool ext4_mb_discard_preallocations_should_retry(struct super_block *sb,
return ret;
}
-static ext4_fsblk_t ext4_mb_new_blocks_simple(handle_t *handle,
- struct ext4_allocation_request *ar, int *errp);
+/*
+ * Simple allocator for Ext4 fast commit replay path. It searches for blocks
+ * linearly starting at the goal block and also excludes the blocks which
+ * are going to be in use after fast commit replay.
+ */
+static ext4_fsblk_t
+ext4_mb_new_blocks_simple(struct ext4_allocation_request *ar, int *errp)
+{
+ struct buffer_head *bitmap_bh;
+ struct super_block *sb = ar->inode->i_sb;
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ ext4_group_t group, nr;
+ ext4_grpblk_t blkoff;
+ ext4_grpblk_t max = EXT4_CLUSTERS_PER_GROUP(sb);
+ ext4_grpblk_t i = 0;
+ ext4_fsblk_t goal, block;
+ struct ext4_super_block *es = EXT4_SB(sb)->s_es;
+
+ goal = ar->goal;
+ if (goal < le32_to_cpu(es->s_first_data_block) ||
+ goal >= ext4_blocks_count(es))
+ goal = le32_to_cpu(es->s_first_data_block);
+
+ ar->len = 0;
+ ext4_get_group_no_and_offset(sb, goal, &group, &blkoff);
+ for (nr = ext4_get_groups_count(sb); nr > 0; nr--) {
+ bitmap_bh = ext4_read_block_bitmap(sb, group);
+ if (IS_ERR(bitmap_bh)) {
+ *errp = PTR_ERR(bitmap_bh);
+ pr_warn("Failed to read block bitmap\n");
+ return 0;
+ }
+
+ while (1) {
+ i = mb_find_next_zero_bit(bitmap_bh->b_data, max,
+ blkoff);
+ if (i >= max)
+ break;
+ if (ext4_fc_replay_check_excluded(sb,
+ ext4_group_first_block_no(sb, group) +
+ EXT4_C2B(sbi, i))) {
+ blkoff = i + 1;
+ } else
+ break;
+ }
+ brelse(bitmap_bh);
+ if (i < max)
+ break;
+
+ if (++group >= ext4_get_groups_count(sb))
+ group = 0;
+
+ blkoff = 0;
+ }
+
+ if (i >= max) {
+ *errp = -ENOSPC;
+ return 0;
+ }
+
+ block = ext4_group_first_block_no(sb, group) + EXT4_C2B(sbi, i);
+ ext4_mb_mark_bb(sb, block, 1, 1);
+ ar->len = 1;
+
+ return block;
+}
/*
* Main entry point into mballoc to allocate blocks
@@ -5109,7 +5173,7 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
trace_ext4_request_blocks(ar);
if (sbi->s_mount_state & EXT4_FC_REPLAY)
- return ext4_mb_new_blocks_simple(handle, ar, errp);
+ return ext4_mb_new_blocks_simple(ar, errp);
/* Allow to use superuser reservation for quota file */
if (ext4_is_quota_file(ar->inode))
@@ -5339,73 +5403,6 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
return 0;
}
-/*
- * Simple allocator for Ext4 fast commit replay path. It searches for blocks
- * linearly starting at the goal block and also excludes the blocks which
- * are going to be in use after fast commit replay.
- */
-static ext4_fsblk_t ext4_mb_new_blocks_simple(handle_t *handle,
- struct ext4_allocation_request *ar, int *errp)
-{
- struct buffer_head *bitmap_bh;
- struct super_block *sb = ar->inode->i_sb;
- struct ext4_sb_info *sbi = EXT4_SB(sb);
- ext4_group_t group, nr;
- ext4_grpblk_t blkoff;
- ext4_grpblk_t max = EXT4_CLUSTERS_PER_GROUP(sb);
- ext4_grpblk_t i = 0;
- ext4_fsblk_t goal, block;
- struct ext4_super_block *es = EXT4_SB(sb)->s_es;
-
- goal = ar->goal;
- if (goal < le32_to_cpu(es->s_first_data_block) ||
- goal >= ext4_blocks_count(es))
- goal = le32_to_cpu(es->s_first_data_block);
-
- ar->len = 0;
- ext4_get_group_no_and_offset(sb, goal, &group, &blkoff);
- for (nr = ext4_get_groups_count(sb); nr > 0; nr--) {
- bitmap_bh = ext4_read_block_bitmap(sb, group);
- if (IS_ERR(bitmap_bh)) {
- *errp = PTR_ERR(bitmap_bh);
- pr_warn("Failed to read block bitmap\n");
- return 0;
- }
-
- while (1) {
- i = mb_find_next_zero_bit(bitmap_bh->b_data, max,
- blkoff);
- if (i >= max)
- break;
- if (ext4_fc_replay_check_excluded(sb,
- ext4_group_first_block_no(sb, group) +
- EXT4_C2B(sbi, i))) {
- blkoff = i + 1;
- } else
- break;
- }
- brelse(bitmap_bh);
- if (i < max)
- break;
-
- if (++group >= ext4_get_groups_count(sb))
- group = 0;
-
- blkoff = 0;
- }
-
- if (i >= max) {
- *errp = -ENOSPC;
- return 0;
- }
-
- block = ext4_group_first_block_no(sb, group) + EXT4_C2B(sbi, i);
- ext4_mb_mark_bb(sb, block, 1, 1);
- ar->len = 1;
-
- return block;
-}
-
static void ext4_free_blocks_simple(struct inode *inode, ext4_fsblk_t block,
unsigned long count)
{
