The patch titled
fsaio: lock_page_blocking()
has been added to the -mm tree. Its filename is
fsaio-lock_page_blocking.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: fsaio: lock_page_blocking()
From: Suparna Bhattacharya <suparna@xxxxxxxxxx>
In order to allow for interruptible and asynchronous versions of lock_page in
conjunction with the wait_on_bit changes, we need to define low-level lock
page routines which take an additional argument, i.e a wait queue entry and
may return non-zero status, e.g -EINTR, -EIOCBRETRY, -EWOULDBLOCK etc. This
patch renames __lock_page to lock_page_blocking, so that it can be later
modified to denote a version which takes a wait queue parameter.
Signed-off-by: Suparna Bhattacharya <suparna@xxxxxxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/linux/pagemap.h | 4 ++--
mm/filemap.c | 8 ++++----
2 files changed, 6 insertions(+), 6 deletions(-)
diff -puN include/linux/pagemap.h~fsaio-lock_page_blocking include/linux/pagemap.h
--- a/include/linux/pagemap.h~fsaio-lock_page_blocking
+++ a/include/linux/pagemap.h
@@ -144,7 +144,7 @@ static inline pgoff_t linear_page_index(
return pgoff >> (PAGE_CACHE_SHIFT - PAGE_SHIFT);
}
-extern void FASTCALL(__lock_page(struct page *page));
+extern void FASTCALL(lock_page_blocking(struct page *page));
extern void FASTCALL(unlock_page(struct page *page));
/*
@@ -154,7 +154,7 @@ static inline void lock_page(struct page
{
might_sleep();
if (TestSetPageLocked(page))
- __lock_page(page);
+ lock_page_blocking(page);
}
/*
diff -puN mm/filemap.c~fsaio-lock_page_blocking mm/filemap.c
--- a/mm/filemap.c~fsaio-lock_page_blocking
+++ a/mm/filemap.c
@@ -520,17 +520,17 @@ void end_page_writeback(struct page *pag
EXPORT_SYMBOL(end_page_writeback);
/**
- * __lock_page - get a lock on the page, assuming we need to sleep to get it
+ * lock_page_blocking - get a lock on the page, assuming we need to sleep to get it
* @page: the page to lock
*/
-void fastcall __lock_page(struct page *page)
+void fastcall lock_page_blocking(struct page *page)
{
DEFINE_WAIT_BIT(wait, &page->flags, PG_locked);
__wait_on_bit_lock(page_waitqueue(page), &wait, sleep_on_page,
TASK_UNINTERRUPTIBLE);
}
-EXPORT_SYMBOL(__lock_page);
+EXPORT_SYMBOL(lock_page_blocking);
/**
* find_get_page - find and get a page reference
@@ -595,7 +595,7 @@ repeat:
page_cache_get(page);
if (TestSetPageLocked(page)) {
read_unlock_irq(&mapping->tree_lock);
- __lock_page(page);
+ lock_page_blocking(page);
read_lock_irq(&mapping->tree_lock);
/* Has the page been truncated while we slept? */
_
Patches currently in -mm which might be from suparna@xxxxxxxxxx are
aio-fix-buggy-put_ioctx-call-in-aio_complete-v2.patch
fsaio-modify-wait-bit-action-args.patch
fsaio-lock_page_blocking.patch
fsaio-init-wait-bit-key.patch
fsaio-tsk-default-io-wait.patch
fsaio-aio-wait-bit.patch
fsaio-aio-wait-page.patch
fsaio-aio-fs-read.patch
fsaio-aio-fs-write.patch
aio-is-unlikely.patch
-
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