mm: zswap: rename zswap_pool_get() to zswap_pool_tryget()

Modify the name of the existing zswap_pool_get() to zswap_pool_tryget() to
be representative of the call it makes to percpu_ref_tryget().  A
subsequent patch will introduce a new zswap_pool_get() that calls
percpu_ref_get().

The intent behind this change is for higher level zswap API such as
zswap_store() to call zswap_pool_tryget() to check upfront if the pool's
refcount is "0" (which means it could be getting destroyed) and to handle
this as an error condition.  zswap_store() would proceed only if
zswap_pool_tryget() returns success, and any additional pool refcounts
that need to be obtained for compressing sub-pages in a large folio could
simply call zswap_pool_get().

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kanchana P Sridhar <[email protected]>
Acked-by: Yosry Ahmed <[email protected]>
Reviewed-by: Chengming Zhou <[email protected]>
Acked-by: Johannes Weiner <[email protected]>
Reviewed-by: Nhat Pham <[email protected]>
Cc: "Huang, Ying" <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Ryan Roberts <[email protected]>
Cc: Shakeel Butt <[email protected]>
Cc: Usama Arif <[email protected]>
Cc: Wajdi Feghali <[email protected]>
Cc: "Zou, Nanhai" <[email protected]>
Cc: Barry Song <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions