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| author | Ming Lin <ming.l@ssi.samsung.com> | 2016-04-04 14:48:11 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-04-15 16:53:14 -0400 |
| commit | 9b1d6c8950021ab007608d455fc9c398ecd25476 (patch) | |
| tree | 6dabbc37da01e225dbf66f1c400b551f1baf10f9 /include/scsi | |
| parent | 65e8617fba17732b4c68d3369a621725838b6f28 (diff) | |
| download | lwn-9b1d6c8950021ab007608d455fc9c398ecd25476.tar.gz lwn-9b1d6c8950021ab007608d455fc9c398ecd25476.zip | |
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.h | 19 |
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 */ |