Merge tag 'v4.3-rc4' into for-4.4/core
Linux 4.3-rc4
Pulling in v4.3-rc4 to avoid conflicts with NVMe fixes that have gone
in since for-4.4/core was based.
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 7785ae9..d921cd5 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -9,6 +9,7 @@
#include <linux/backing-dev.h>
#include <linux/bio.h>
#include <linux/blkdev.h>
+#include <linux/kmemleak.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/slab.h>
@@ -1430,6 +1431,11 @@
while (!list_empty(&tags->page_list)) {
page = list_first_entry(&tags->page_list, struct page, lru);
list_del_init(&page->lru);
+ /*
+ * Remove kmemleak object previously allocated in
+ * blk_mq_init_rq_map().
+ */
+ kmemleak_free(page_address(page));
__free_pages(page, page->private);
}
@@ -1502,6 +1508,11 @@
list_add_tail(&page->lru, &tags->page_list);
p = page_address(page);
+ /*
+ * Allow kmemleak to scan these pages as they contain pointers
+ * to additional allocations like via ops->init_request().
+ */
+ kmemleak_alloc(p, order_to_size(this_order), 1, GFP_KERNEL);
entries_per_page = order_to_size(this_order) / rq_size;
to_do = min(entries_per_page, set->queue_depth - i);
left -= to_do * rq_size;
diff --git a/fs/direct-io.c b/fs/direct-io.c
index 1125629..3ae0e04 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -120,6 +120,7 @@
int page_errors; /* errno from get_user_pages() */
int is_async; /* is IO async ? */
bool defer_completion; /* defer AIO completion to workqueue? */
+ bool should_dirty; /* if pages should be dirtied */
int io_error; /* IO error in completion path */
unsigned long refcount; /* direct_io_worker() and bios */
struct bio *bio_list; /* singly linked via bi_private */
@@ -393,7 +394,7 @@
dio->refcount++;
spin_unlock_irqrestore(&dio->bio_lock, flags);
- if (dio->is_async && dio->rw == READ)
+ if (dio->is_async && dio->rw == READ && dio->should_dirty)
bio_set_pages_dirty(bio);
if (sdio->submit_io)
@@ -464,14 +465,15 @@
if (bio->bi_error)
dio->io_error = -EIO;
- if (dio->is_async && dio->rw == READ) {
+ if (dio->is_async && dio->rw == READ && dio->should_dirty) {
bio_check_pages_dirty(bio); /* transfers ownership */
err = bio->bi_error;
} else {
bio_for_each_segment_all(bvec, bio, i) {
struct page *page = bvec->bv_page;
- if (dio->rw == READ && !PageCompound(page))
+ if (dio->rw == READ && !PageCompound(page) &&
+ dio->should_dirty)
set_page_dirty_lock(page);
page_cache_release(page);
}
@@ -1219,6 +1221,7 @@
spin_lock_init(&dio->bio_lock);
dio->refcount = 1;
+ dio->should_dirty = (iter->type == ITER_IOVEC);
sdio.iter = iter;
sdio.final_block_in_request =
(offset + iov_iter_count(iter)) >> blkbits;
diff --git a/fs/mpage.c b/fs/mpage.c
index 778a4dd..2ebf916 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -482,6 +482,7 @@
struct buffer_head map_bh;
loff_t i_size = i_size_read(inode);
int ret = 0;
+ int wr = (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE);
if (page_has_buffers(page)) {
struct buffer_head *head = page_buffers(page);
@@ -590,7 +591,7 @@
* This page will go to BIO. Do we need to send this BIO off first?
*/
if (bio && mpd->last_block_in_bio != blocks[0] - 1)
- bio = mpage_bio_submit(WRITE, bio);
+ bio = mpage_bio_submit(wr, bio);
alloc_new:
if (bio == NULL) {
@@ -617,7 +618,7 @@
wbc_account_io(wbc, page, PAGE_SIZE);
length = first_unmapped << blkbits;
if (bio_add_page(bio, page, length, 0) < length) {
- bio = mpage_bio_submit(WRITE, bio);
+ bio = mpage_bio_submit(wr, bio);
goto alloc_new;
}
@@ -627,7 +628,7 @@
set_page_writeback(page);
unlock_page(page);
if (boundary || (first_unmapped != blocks_per_page)) {
- bio = mpage_bio_submit(WRITE, bio);
+ bio = mpage_bio_submit(wr, bio);
if (boundary_block) {
write_boundary_block(boundary_bdev,
boundary_block, 1 << blkbits);
@@ -639,7 +640,7 @@
confused:
if (bio)
- bio = mpage_bio_submit(WRITE, bio);
+ bio = mpage_bio_submit(wr, bio);
if (mpd->use_writepage) {
ret = mapping->a_ops->writepage(page, wbc);
@@ -695,8 +696,11 @@
};
ret = write_cache_pages(mapping, wbc, __mpage_writepage, &mpd);
- if (mpd.bio)
- mpage_bio_submit(WRITE, mpd.bio);
+ if (mpd.bio) {
+ int wr = (wbc->sync_mode == WB_SYNC_ALL ?
+ WRITE_SYNC : WRITE);
+ mpage_bio_submit(wr, mpd.bio);
+ }
}
blk_finish_plug(&plug);
return ret;
@@ -713,8 +717,11 @@
.use_writepage = 0,
};
int ret = __mpage_writepage(page, wbc, &mpd);
- if (mpd.bio)
- mpage_bio_submit(WRITE, mpd.bio);
+ if (mpd.bio) {
+ int wr = (wbc->sync_mode == WB_SYNC_ALL ?
+ WRITE_SYNC : WRITE);
+ mpage_bio_submit(wr, mpd.bio);
+ }
return ret;
}
EXPORT_SYMBOL(mpage_writepage);