extern int ext4_read_bh(struct buffer_head *bh, int op_flags,
bh_end_io_t *end_io);
extern int ext4_read_bh_lock(struct buffer_head *bh, int op_flags, bool wait);
+extern void ext4_sb_breadahead_unmovable(struct super_block *sb, sector_t block);
extern int ext4_seq_options_show(struct seq_file *seq, void *offset);
extern int ext4_calculate_overhead(struct super_block *sb);
extern void ext4_superblock_csum_set(struct super_block *sb);
return bh;
}
+void ext4_sb_breadahead_unmovable(struct super_block *sb, sector_t block)
+{
+ struct buffer_head *bh = sb_getblk_gfp(sb, block, 0);
+
+ if (likely(bh)) {
+ ext4_read_bh_lock(bh, REQ_RAHEAD, false);
+ brelse(bh);
+ }
+}
+
static int ext4_verify_csum_type(struct super_block *sb,
struct ext4_super_block *es)
{
/* Pre-read the descriptors into the buffer cache */
for (i = 0; i < db_count; i++) {
block = descriptor_loc(sb, logical_sb_block, i);
- sb_breadahead_unmovable(sb, block);
+ ext4_sb_breadahead_unmovable(sb, block);
}
for (i = 0; i < db_count; i++) {