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-rw-r--r--xlators/performance/read-ahead/src/read-ahead.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/xlators/performance/read-ahead/src/read-ahead.c b/xlators/performance/read-ahead/src/read-ahead.c
index 522fa52b..241fa477 100644
--- a/xlators/performance/read-ahead/src/read-ahead.c
+++ b/xlators/performance/read-ahead/src/read-ahead.c
@@ -942,6 +942,55 @@ unwind:
return 0;
}
+int
+ra_discard_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+ struct iatt *postbuf, dict_t *xdata)
+{
+ GF_ASSERT (frame);
+
+ STACK_UNWIND_STRICT (discard, frame, op_ret, op_errno, prebuf,
+ postbuf, xdata);
+ return 0;
+}
+
+static int
+ra_discard(call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset,
+ size_t len, dict_t *xdata)
+{
+ ra_file_t *file = NULL;
+ fd_t *iter_fd = NULL;
+ inode_t *inode = NULL;
+ uint64_t tmp_file = 0;
+ int32_t op_errno = EINVAL;
+
+ GF_ASSERT (frame);
+ GF_VALIDATE_OR_GOTO (frame->this->name, this, unwind);
+ GF_VALIDATE_OR_GOTO (frame->this->name, fd, unwind);
+
+ inode = fd->inode;
+
+ LOCK (&inode->lock);
+ {
+ list_for_each_entry (iter_fd, &inode->fd_list, inode_list) {
+ fd_ctx_get (iter_fd, this, &tmp_file);
+ file = (ra_file_t *)(long)tmp_file;
+ if (!file)
+ continue;
+
+ flush_region(frame, file, offset, len, 1);
+ }
+ }
+ UNLOCK (&inode->lock);
+
+ STACK_WIND (frame, ra_discard_cbk, FIRST_CHILD (this),
+ FIRST_CHILD (this)->fops->discard, fd, offset, len, xdata);
+ return 0;
+
+unwind:
+ STACK_UNWIND_STRICT (discard, frame, -1, op_errno, NULL, NULL, NULL);
+ return 0;
+}
int
ra_priv_dump (xlator_t *this)
@@ -1123,6 +1172,7 @@ struct xlator_fops fops = {
.truncate = ra_truncate,
.ftruncate = ra_ftruncate,
.fstat = ra_fstat,
+ .discard = ra_discard,
};
struct xlator_cbks cbks = {