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authorNick Piggin <npiggin@suse.de>2008-09-22 13:57:50 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-09-23 08:09:14 -0700
commitdb203d53d474aa068984e409d807628f5841da1b (patch)
tree7c4352513d8a108b916d2cbe16234346addf179c /Documentation/sysctl/kernel.txt
parent2d4c8266774188cda7f7e612e6dfb8ad12c579d5 (diff)
mm: tiny-shmem fix lock ordering: mmap_sem vs i_mutex
tiny-shmem calls do_truncate in shmem_file_setup. do_truncate takes i_mutex, and shmem_file_setup is called with mmap_sem held. However i_mutex nests outside mmap_sem. Copy the code in shmem.c to avoid this problem. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Nick Piggin <npiggin@suse.de> Reported-and-tested-by: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Matt Mackall <mpm@selenic.com> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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