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-rw-r--r--fs/btrfs/send.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 112eb647b5cd..646369179697 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -124,6 +124,8 @@ struct send_ctx {
struct list_head name_cache_list;
int name_cache_size;
+ struct file_ra_state ra;
+
char *read_buf;
/*
@@ -4170,6 +4172,13 @@ static ssize_t fill_read_buf(struct send_ctx *sctx, u64 offset, u32 len)
goto out;
last_index = (offset + len - 1) >> PAGE_CACHE_SHIFT;
+
+ /* initial readahead */
+ memset(&sctx->ra, 0, sizeof(struct file_ra_state));
+ file_ra_state_init(&sctx->ra, inode->i_mapping);
+ btrfs_force_ra(inode->i_mapping, &sctx->ra, NULL, index,
+ last_index - index + 1);
+
while (index <= last_index) {
unsigned cur_len = min_t(unsigned, len,
PAGE_CACHE_SIZE - pg_offset);