Commit de0d9641 authored by Roland Dreier's avatar Roland Dreier Committed by Linus Torvalds

[PATCH] IB: Fix FMR pool crash

Mask bits correctly from jhash result in ib_fmr_hash() so that the
computed bucket index is within our hash table.  This fixes an SDP
crash.
Signed-off-by: default avatarRoland Dreier <roland@topspin.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent dfe7cc7e
...@@ -103,9 +103,8 @@ struct ib_fmr_pool { ...@@ -103,9 +103,8 @@ struct ib_fmr_pool {
static inline u32 ib_fmr_hash(u64 first_page) static inline u32 ib_fmr_hash(u64 first_page)
{ {
return jhash_2words((u32) first_page, return jhash_2words((u32) first_page, (u32) (first_page >> 32), 0) &
(u32) (first_page >> 32), (IB_FMR_HASH_SIZE - 1);
0);
} }
/* Caller must hold pool_lock */ /* Caller must hold pool_lock */
......
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