path: root/lib/radix-tree.c
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authorNick Piggin <npiggin@suse.de>2007-10-16 01:24:42 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:42:53 -0700
commitb55ed816235cf41c29159d22a4cdeec7deb5821c (patch)
tree73245c1da2c5352c526d4d25f02e69943b4b0b15 /lib/radix-tree.c
parent45726cb43d11b288c58243a26010f397054222f0 (diff)
mm: clarify __add_to_swap_cache locking
__add_to_swap_cache unconditionally sets the page locked, which can be a bit alarming to the unsuspecting reader: in the code paths where the page is visible to other CPUs, the page should be (and is) already locked. Instead, just add a check to ensure the page is locked here, and teach the one path relying on the old behaviour to call SetPageLocked itself. [hugh@veritas.com: locking fix] Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/radix-tree.c')
0 files changed, 0 insertions, 0 deletions

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