kill wait_on_page_writeback_range
All callers really want the more logical filemap_fdatawait_range interface,
so convert them to use it and merge wait_on_page_writeback_range into
filemap_fdatawait_range.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index 623f094..3de2f32 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -472,7 +472,7 @@
writing out the whole address_space.
The Writeback tag is used by filemap*wait* and sync_page* functions,
-via wait_on_page_writeback_range, to wait for all writeback to
+via filemap_fdatawait_range, to wait for all writeback to
complete. While waiting ->sync_page (if defined) will be called on
each page that is found to require writeback.
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index d4cfd6d..c5edc13 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -286,7 +286,7 @@
if (err) {
/*
* Because AS_EIO is cleared by
- * wait_on_page_writeback_range(), set it again so
+ * filemap_fdatawait_range(), set it again so
* that user process can get -EIO from fsync().
*/
set_bit(AS_EIO,
diff --git a/fs/sync.c b/fs/sync.c
index b75ca68..36752a6 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -453,9 +453,7 @@
ret = 0;
if (flags & SYNC_FILE_RANGE_WAIT_BEFORE) {
- ret = wait_on_page_writeback_range(mapping,
- offset >> PAGE_CACHE_SHIFT,
- endbyte >> PAGE_CACHE_SHIFT);
+ ret = filemap_fdatawait_range(mapping, offset, endbyte);
if (ret < 0)
goto out;
}
@@ -468,9 +466,7 @@
}
if (flags & SYNC_FILE_RANGE_WAIT_AFTER) {
- ret = wait_on_page_writeback_range(mapping,
- offset >> PAGE_CACHE_SHIFT,
- endbyte >> PAGE_CACHE_SHIFT);
+ ret = filemap_fdatawait_range(mapping, offset, endbyte);
}
out:
return ret;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 891f7d6..a057f48 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2091,8 +2091,6 @@
extern int filemap_write_and_wait(struct address_space *mapping);
extern int filemap_write_and_wait_range(struct address_space *mapping,
loff_t lstart, loff_t lend);
-extern int wait_on_page_writeback_range(struct address_space *mapping,
- pgoff_t start, pgoff_t end);
extern int __filemap_fdatawrite_range(struct address_space *mapping,
loff_t start, loff_t end, int sync_mode);
extern int filemap_fdatawrite_range(struct address_space *mapping,
diff --git a/mm/filemap.c b/mm/filemap.c
index c3d3506..8b4d88f 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -260,27 +260,27 @@
EXPORT_SYMBOL(filemap_flush);
/**
- * wait_on_page_writeback_range - wait for writeback to complete
- * @mapping: target address_space
- * @start: beginning page index
- * @end: ending page index
+ * filemap_fdatawait_range - wait for writeback to complete
+ * @mapping: address space structure to wait for
+ * @start_byte: offset in bytes where the range starts
+ * @end_byte: offset in bytes where the range ends (inclusive)
*
- * Wait for writeback to complete against pages indexed by start->end
- * inclusive
+ * Walk the list of under-writeback pages of the given address space
+ * in the given range and wait for all of them.
*/
-int wait_on_page_writeback_range(struct address_space *mapping,
- pgoff_t start, pgoff_t end)
+int filemap_fdatawait_range(struct address_space *mapping, loff_t start_byte,
+ loff_t end_byte)
{
+ pgoff_t index = start_byte >> PAGE_CACHE_SHIFT;
+ pgoff_t end = end_byte >> PAGE_CACHE_SHIFT;
struct pagevec pvec;
int nr_pages;
int ret = 0;
- pgoff_t index;
- if (end < start)
+ if (end_byte < start_byte)
return 0;
pagevec_init(&pvec, 0);
- index = start;
while ((index <= end) &&
(nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
PAGECACHE_TAG_WRITEBACK,
@@ -310,25 +310,6 @@
return ret;
}
-
-/**
- * filemap_fdatawait_range - wait for all under-writeback pages to complete in a given range
- * @mapping: address space structure to wait for
- * @start: offset in bytes where the range starts
- * @end: offset in bytes where the range ends (inclusive)
- *
- * Walk the list of under-writeback pages of the given address space
- * in the given range and wait for all of them.
- *
- * This is just a simple wrapper so that callers don't have to convert offsets
- * to page indexes themselves
- */
-int filemap_fdatawait_range(struct address_space *mapping, loff_t start,
- loff_t end)
-{
- return wait_on_page_writeback_range(mapping, start >> PAGE_CACHE_SHIFT,
- end >> PAGE_CACHE_SHIFT);
-}
EXPORT_SYMBOL(filemap_fdatawait_range);
/**
@@ -345,8 +326,7 @@
if (i_size == 0)
return 0;
- return wait_on_page_writeback_range(mapping, 0,
- (i_size - 1) >> PAGE_CACHE_SHIFT);
+ return filemap_fdatawait_range(mapping, 0, i_size - 1);
}
EXPORT_SYMBOL(filemap_fdatawait);
@@ -393,9 +373,8 @@
WB_SYNC_ALL);
/* See comment of filemap_write_and_wait() */
if (err != -EIO) {
- int err2 = wait_on_page_writeback_range(mapping,
- lstart >> PAGE_CACHE_SHIFT,
- lend >> PAGE_CACHE_SHIFT);
+ int err2 = filemap_fdatawait_range(mapping,
+ lstart, lend);
if (!err)
err = err2;
}