The quilt patch titled
Subject: mm/filemap: add filemap_fdatawrite_range_kick() helper
has been removed from the -mm tree. Its filename was
mm-filemap-add-filemap_fdatawrite_range_kick-helper.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Jens Axboe <axboe@xxxxxxxxx>
Subject: mm/filemap: add filemap_fdatawrite_range_kick() helper
Date: Fri, 20 Dec 2024 08:47:48 -0700
Works like filemap_fdatawrite_range(), except it's a non-integrity data
writeback and hence only starts writeback on the specified range. Will
help facilitate generically starting uncached writeback from
generic_write_sync(), as header dependencies preclude doing this inline
from fs.h.
Link: https://lkml.kernel.org/r/20241220154831.1086649-11-axboe@xxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Cc: Brian Foster <bfoster@xxxxxxxxxx>
Cc: Chris Mason <clm@xxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/fs.h | 2 ++
mm/filemap.c | 18 ++++++++++++++++++
2 files changed, 20 insertions(+)
--- a/include/linux/fs.h~mm-filemap-add-filemap_fdatawrite_range_kick-helper
+++ a/include/linux/fs.h
@@ -2878,6 +2878,8 @@ extern int __must_check file_fdatawait_r
extern int __must_check file_check_and_advance_wb_err(struct file *file);
extern int __must_check file_write_and_wait_range(struct file *file,
loff_t start, loff_t end);
+int filemap_fdatawrite_range_kick(struct address_space *mapping, loff_t start,
+ loff_t end);
static inline int file_write_and_wait(struct file *file)
{
--- a/mm/filemap.c~mm-filemap-add-filemap_fdatawrite_range_kick-helper
+++ a/mm/filemap.c
@@ -441,6 +441,24 @@ int filemap_fdatawrite_range(struct addr
EXPORT_SYMBOL(filemap_fdatawrite_range);
/**
+ * filemap_fdatawrite_range_kick - start writeback on a range
+ * @mapping: target address_space
+ * @start: index to start writeback on
+ * @end: last (non-inclusive) index for writeback
+ *
+ * This is a non-integrity writeback helper, to start writing back folios
+ * for the indicated range.
+ *
+ * Return: %0 on success, negative error code otherwise.
+ */
+int filemap_fdatawrite_range_kick(struct address_space *mapping, loff_t start,
+ loff_t end)
+{
+ return __filemap_fdatawrite_range(mapping, start, end, WB_SYNC_NONE);
+}
+EXPORT_SYMBOL_GPL(filemap_fdatawrite_range_kick);
+
+/**
* filemap_flush - mostly a non-blocking flush
* @mapping: target address_space
*
_
Patches currently in -mm which might be from axboe@xxxxxxxxx are
