block: Allow devices to indicate whether discarded blocks are zeroed

[GitHub/MotorolaMobilityLLC/kernel-slsi.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 79cea805173682e2d750b0b1722b9f86fa6cbfe6..891f7d642e5c6789cb05853137a8caa58a21c2c6 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -304,6 +304,7 @@ struct inodes_stat_t {
 #define BLKIOOPT _IO(0x12,121)
 #define BLKALIGNOFF _IO(0x12,122)
 #define BLKPBSZGET _IO(0x12,123)
+#define BLKDISCARDZEROES _IO(0x12,124)
 
 #define BMAP_IOCTL 1           /* obsolete - kept for compatibility */
 #define FIBMAP    _IO(0x00,1)  /* bmap access */