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authorMing Lin <ming.l@ssi.samsung.com>2016-04-05 00:48:11 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2016-04-15 23:53:14 +0300
commit9b1d6c8950021ab007608d455fc9c398ecd25476 (patch)
tree6dabbc37da01e225dbf66f1c400b551f1baf10f9 /include/scsi
parent65e8617fba17732b4c68d3369a621725838b6f28 (diff)
downloadlinux-9b1d6c8950021ab007608d455fc9c398ecd25476.tar.xz
lib: scatterlist: move SG pool code from SCSI driver to lib/sg_pool.c
Now it's ready to move the mempool based SG chained allocator code from SCSI driver to lib/sg_pool.c, which will be compiled only based on a Kconfig symbol CONFIG_SG_POOL. SCSI selects CONFIG_SG_POOL. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ming Lin <ming.l@ssi.samsung.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/scsi')
-rw-r--r--include/scsi/scsi.h19
1 files changed, 0 insertions, 19 deletions
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index 74dafa75bae7..8ec7c30e35af 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -18,25 +18,6 @@ enum scsi_timeouts {
};
/*
- * The maximum number of SG segments that we will put inside a
- * scatterlist (unless chaining is used). Should ideally fit inside a
- * single page, to avoid a higher order allocation. We could define this
- * to SG_MAX_SINGLE_ALLOC to pack correctly at the highest order. The
- * minimum value is 32
- */
-#define SG_CHUNK_SIZE 128
-
-/*
- * Like SG_CHUNK_SIZE, but for archs that have sg chaining. This limit
- * is totally arbitrary, a setting of 2048 will get you at least 8mb ios.
- */
-#ifdef CONFIG_ARCH_HAS_SG_CHAIN
-#define SG_MAX_SEGMENTS 2048
-#else
-#define SG_MAX_SEGMENTS SG_CHUNK_SIZE
-#endif
-
-/*
* DIX-capable adapters effectively support infinite chaining for the
* protection information scatterlist
*/