fs/dax: remove wmb_pmem()
Flushing posted-write queues is now deferred to REQ_FLUSH context, or otherwise handled by an ADR event at the platform level. Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
parent
476f848aae
commit
14df6a4e7e
7
fs/dax.c
7
fs/dax.c
|
@ -147,7 +147,7 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter,
|
|||
struct buffer_head *bh)
|
||||
{
|
||||
loff_t pos = start, max = start, bh_max = start;
|
||||
bool hole = false, need_wmb = false;
|
||||
bool hole = false;
|
||||
struct block_device *bdev = NULL;
|
||||
int rw = iov_iter_rw(iter), rc;
|
||||
long map_len = 0;
|
||||
|
@ -213,7 +213,6 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter,
|
|||
|
||||
if (iov_iter_rw(iter) == WRITE) {
|
||||
len = copy_from_iter_pmem(dax.addr, max - pos, iter);
|
||||
need_wmb = true;
|
||||
} else if (!hole)
|
||||
len = copy_to_iter((void __force *) dax.addr, max - pos,
|
||||
iter);
|
||||
|
@ -230,8 +229,6 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter,
|
|||
dax.addr += len;
|
||||
}
|
||||
|
||||
if (need_wmb)
|
||||
wmb_pmem();
|
||||
dax_unmap_atomic(bdev, &dax);
|
||||
|
||||
return (pos == start) ? rc : pos - start;
|
||||
|
@ -783,7 +780,6 @@ int dax_writeback_mapping_range(struct address_space *mapping,
|
|||
return ret;
|
||||
}
|
||||
}
|
||||
wmb_pmem();
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(dax_writeback_mapping_range);
|
||||
|
@ -1227,7 +1223,6 @@ int __dax_zero_page_range(struct block_device *bdev, sector_t sector,
|
|||
if (dax_map_atomic(bdev, &dax) < 0)
|
||||
return PTR_ERR(dax.addr);
|
||||
clear_pmem(dax.addr + offset, length);
|
||||
wmb_pmem();
|
||||
dax_unmap_atomic(bdev, &dax);
|
||||
}
|
||||
return 0;
|
||||
|
|
Loading…
Reference in a new issue