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authorMike Christie <mchristi@redhat.com>2016-06-02 20:12:37 -0500
committerNicholas Bellinger <nab@linux-iscsi.org>2016-07-20 00:58:36 -0700
commitea263c7fada4af8ec7fe5fcfd6e7d7705a89351b (patch)
tree72beb3f878ba29726a189211cc4e6dacd9a6f339 /include/target/target_core_backend.h
parent064cdd2d91c2805d788876082f31cc63506f22c3 (diff)
downloadlinux-stericsson-ea263c7fada4af8ec7fe5fcfd6e7d7705a89351b.tar.gz
target: Fix max_unmap_lba_count calc overflow
max_discard_sectors only 32bits, and some non scsi backend devices will set this to the max 0xffffffff, so we can end up overflowing during the max_unmap_lba_count calculation. This fixes a regression caused by my patch: commit 8a9ebe717a133ba7bc90b06047f43cc6b8bcb8b3 Author: Mike Christie <mchristi@redhat.com> Date: Mon Jan 18 14:09:27 2016 -0600 target: Fix WRITE_SAME/DISCARD conversion to linux 512b sectors which can result in extra discards being sent to due the overflow causing max_unmap_lba_count to be smaller than what the backing device can actually support. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: stable@vger.kernel.org Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/target/target_core_backend.h')
-rw-r--r--include/target/target_core_backend.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
index d8ab5101fad5..f6f3bc52c1ac 100644
--- a/include/target/target_core_backend.h
+++ b/include/target/target_core_backend.h
@@ -95,6 +95,6 @@ sense_reason_t passthrough_parse_cdb(struct se_cmd *cmd,
bool target_sense_desc_format(struct se_device *dev);
sector_t target_to_linux_sector(struct se_device *dev, sector_t lb);
bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib,
- struct request_queue *q, int block_size);
+ struct request_queue *q);
#endif /* TARGET_CORE_BACKEND_H */