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authorNick Piggin <npiggin@suse.de>2006-10-20 02:29:10 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-20 13:26:44 -0400
commit82591e6ea234762eeaa8b2337fe060ed438c18dc (patch)
treeea521388e91bdf385de546dada0925316eee02e3 /mm/filemap.c
parentb95936cb9267e4c90a0b92361609ef5fd85a0a5f (diff)
[PATCH] mm: more commenting on lock ordering
Clarify lockorder comments now that sys_msync dropps mmap_sem before calling do_fsync. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 57faa8d12099..8558732e85c1 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -75,8 +75,8 @@ generic_file_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
75 * ->mmap_sem 75 * ->mmap_sem
76 * ->lock_page (access_process_vm) 76 * ->lock_page (access_process_vm)
77 * 77 *
78 * ->mmap_sem 78 * ->i_mutex (generic_file_buffered_write)
79 * ->i_mutex (msync) 79 * ->mmap_sem (fault_in_pages_readable->do_page_fault)
80 * 80 *
81 * ->i_mutex 81 * ->i_mutex
82 * ->i_alloc_sem (various) 82 * ->i_alloc_sem (various)