@@ -86,6 +86,29 @@ static struct se_device *fd_alloc_device(struct se_hba *hba, const char *name)
return &fd_dev->dev;
}
+static bool fd_configure_unmap(struct se_device *dev)
+{
+ struct file *file = FD_DEV(dev)->fd_file;
+ struct inode *inode = file->f_mapping->host;
+
+ if (S_ISBLK(inode->i_mode)) {
+ return target_configure_unmap_from_queue(&dev->dev_attrib,
+ I_BDEV(inode));
+ } else {
+ /*
+ * Limit UNMAP emulation to 8k Number of LBAs (NoLB)
+ */
+ dev->dev_attrib.max_unmap_lba_count = 0x2000;
+ /*
+ * Currently hardcoded to 1 in Linux/SCSI code..
+ */
+ dev->dev_attrib.max_unmap_block_desc_count = 1;
+ dev->dev_attrib.unmap_granularity = 1;
+ dev->dev_attrib.unmap_granularity_alignment = 0;
+ return true;
+ }
+}
+
static int fd_configure_device(struct se_device *dev)
{
struct fd_dev *fd_dev = FD_DEV(dev);
@@ -149,10 +172,6 @@ static int fd_configure_device(struct se_device *dev)
" block_device blocks: %llu logical_block_size: %d\n",
dev_size, div_u64(dev_size, fd_dev->fd_block_size),
fd_dev->fd_block_size);
-
- if (target_configure_unmap_from_queue(&dev->dev_attrib, bdev))
- pr_debug("IFILE: BLOCK Discard support available,"
- " disabled by default\n");
/*
* Enable write same emulation for IBLOCK and use 0xFFFF as
* the smaller WRITE_SAME(10) only has a two-byte block count.
@@ -170,16 +189,6 @@ static int fd_configure_device(struct se_device *dev)
}
fd_dev->fd_block_size = FD_BLOCKSIZE;
- /*
- * Limit UNMAP emulation to 8k Number of LBAs (NoLB)
- */
- dev->dev_attrib.max_unmap_lba_count = 0x2000;
- /*
- * Currently hardcoded to 1 in Linux/SCSI code..
- */
- dev->dev_attrib.max_unmap_block_desc_count = 1;
- dev->dev_attrib.unmap_granularity = 1;
- dev->dev_attrib.unmap_granularity_alignment = 0;
/*
* Limit WRITE_SAME w/ UNMAP=0 emulation to 8k Number of LBAs (NoLB)
@@ -923,6 +932,7 @@ static const struct target_backend_ops fileio_ops = {
.configure_device = fd_configure_device,
.destroy_device = fd_destroy_device,
.free_device = fd_free_device,
+ .configure_unmap = fd_configure_unmap,
.parse_cdb = fd_parse_cdb,
.set_configfs_dev_params = fd_set_configfs_dev_params,
.show_configfs_dev_params = fd_show_configfs_dev_params,
Move file's unmap setup code to a configure_unmap callout. Signed-off-by: Mike Christie <michael.christie@oracle.com> --- drivers/target/target_core_file.c | 38 +++++++++++++++++++------------ 1 file changed, 24 insertions(+), 14 deletions(-)