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author | Matthew Wilcox <matthew@wil.cx> | 2007-12-06 16:18:49 (GMT) |
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committer | Matthew Wilcox <willy@linux.intel.com> | 2007-12-06 22:35:41 (GMT) |
commit | 2687a3569e40b1302f96698bcd6329aeb0ce3dd2 (patch) | |
tree | 7bb5e1ffd807ef94b145f6829bf4326a98b8fd99 /mm | |
parent | f776d12dd16da1b0cd55a1240002c1b31f315d5d (diff) | |
download | linux-2687a3569e40b1302f96698bcd6329aeb0ce3dd2.tar.xz |
Add lock_page_killable
This routine is like lock_page, but can be interrupted by a fatal signal
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Diffstat (limited to 'mm')
-rw-r--r-- | mm/filemap.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 188cf5f..ac8f690 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -173,6 +173,12 @@ static int sync_page(void *word) return 0; } +static int sync_page_killable(void *word) +{ + sync_page(word); + return fatal_signal_pending(current) ? -EINTR : 0; +} + /** * __filemap_fdatawrite_range - start writeback on mapping dirty pages in range * @mapping: address space structure to write @@ -577,6 +583,14 @@ void fastcall __lock_page(struct page *page) } EXPORT_SYMBOL(__lock_page); +int fastcall __lock_page_killable(struct page *page) +{ + DEFINE_WAIT_BIT(wait, &page->flags, PG_locked); + + return __wait_on_bit_lock(page_waitqueue(page), &wait, + sync_page_killable, TASK_KILLABLE); +} + /* * Variant of lock_page that does not require the caller to hold a reference * on the page's mapping. |