diff options
Diffstat (limited to 'mm/rmap.c')
-rw-r--r-- | mm/rmap.c | 8 |
1 files changed, 4 insertions, 4 deletions
@@ -20,13 +20,13 @@ | |||
20 | /* | 20 | /* |
21 | * Lock ordering in mm: | 21 | * Lock ordering in mm: |
22 | * | 22 | * |
23 | * inode->i_sem (while writing or truncating, not reading or faulting) | 23 | * inode->i_mutex (while writing or truncating, not reading or faulting) |
24 | * inode->i_alloc_sem | 24 | * inode->i_alloc_sem |
25 | * | 25 | * |
26 | * When a page fault occurs in writing from user to file, down_read | 26 | * When a page fault occurs in writing from user to file, down_read |
27 | * of mmap_sem nests within i_sem; in sys_msync, i_sem nests within | 27 | * of mmap_sem nests within i_mutex; in sys_msync, i_mutex nests within |
28 | * down_read of mmap_sem; i_sem and down_write of mmap_sem are never | 28 | * down_read of mmap_sem; i_mutex and down_write of mmap_sem are never |
29 | * taken together; in truncation, i_sem is taken outermost. | 29 | * taken together; in truncation, i_mutex is taken outermost. |
30 | * | 30 | * |
31 | * mm->mmap_sem | 31 | * mm->mmap_sem |
32 | * page->flags PG_locked (lock_page) | 32 | * page->flags PG_locked (lock_page) |