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lib: scatterlist: move SG pool code from SCSI driver to lib/sg_pool.c

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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 <[email protected]>
Signed-off-by: Ming Lin <[email protected]>
Reviewed-by: Sagi Grimberg <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
This commit is contained in:
Ming Lin 2016-04-04 14:48:11 -07:00 • committed by Martin K. Petersen
commit 9b1d6c8950
7 changed files with 206 additions and 156 deletions
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7
lib/Kconfig
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@ -523,6 +523,13 @@ config SG_SPLIT
a scatterlist. This should be selected by a driver or an API which
whishes to split a scatterlist amongst multiple DMA channels.
config SG_POOL
def_bool n
help
Provides a helper to allocate chained scatterlists. This should be
selected by a driver or an API which whishes to allocate chained
scatterlist.
#
# sg chaining option
#