Hi Stephen, 08/29/2013 01:47 PM, Stephen Rothwell пишет:
Hi Andrew,After merging the akpm tree, today's linux-next build (sparc64 defconfig and others) produced these warnings: mm/page-writeback.c: In function 'balance_dirty_pages_ratelimited': mm/page-writeback.c:1450:13: warning: 'bdi_thresh' may be used uninitialized in this function [-Wuninitialized] mm/page-writeback.c:1372:16: note: 'bdi_thresh' was declared here mm/page-writeback.c:1226:16: warning: 'bdi_dirty' may be used uninitialized in this function [-Wuninitialized] mm/page-writeback.c:1369:16: note: 'bdi_dirty' was declared here Possibly introduced by commit 34c547af1e23 ("mm/page-writeback.c: add strictlimit feature"), but I am not sure anything can be done about them.
This looks as gcc glitch. So far as I didn't observe the warnings, the version of gcc does matter. May be moving the definitions of the two variables into for(;;){...} would help. Could you please give it a try?
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