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) |
