Messages in this thread | | | Date | Mon, 18 Dec 2023 09:53:53 -0800 | Subject | Re: [PATCH 6.6.y] maple_tree: do not preallocate nodes for slot stores | From | Sidhartha Kumar <> |
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On 12/18/23 2:59 AM, Greg KH wrote: > On Tue, Dec 12, 2023 at 11:52:55AM -0800, Sidhartha Kumar wrote: >> mas_preallocate() defaults to requesting 1 node for preallocation and then >> ,depending on the type of store, will update the request variable. There >> isn't a check for a slot store type, so slot stores are preallocating the >> default 1 node. Slot stores do not require any additional nodes, so add a >> check for the slot store case that will bypass node_count_gfp(). Update >> the tests to reflect that slot stores do not require allocations. >> >> User visible effects of this bug include increased memory usage from the >> unneeded node that was allocated. >> >> Fixes: 0b8bb544b1a7 ("maple_tree: update mas_preallocate() testing") >> Cc: <stable@vger.kernel.org> # 6.6+ >> Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> >> --- >> This is a modified backport as the patch to fix this in upstream does not >> apply to 6.6 because the node_end field was moved from the ma_wr_state to >> the ma_state after 6.6. > > What is the git commit id of this change in Linus's tree?
The patch is in akpm's mm-hotfixes-unstable tree and has not made it to Linus's tree yet.
Thanks, Sid > > thanks, > > greg k-h
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