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Diffstat (limited to 'fs/btrfs/extent_io.c')
-rw-r--r--fs/btrfs/extent_io.c45
1 files changed, 11 insertions, 34 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 2e7c97a..392592d 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2897,12 +2897,11 @@ static int __do_readpage(struct extent_io_tree *tree,
struct block_device *bdev;
int ret;
int nr = 0;
- int parent_locked = *bio_flags & EXTENT_BIO_PARENT_LOCKED;
size_t pg_offset = 0;
size_t iosize;
size_t disk_io_size;
size_t blocksize = inode->i_sb->s_blocksize;
- unsigned long this_bio_flag = *bio_flags & EXTENT_BIO_PARENT_LOCKED;
+ unsigned long this_bio_flag = 0;
set_page_extent_mapped(page);
@@ -2942,18 +2941,16 @@ static int __do_readpage(struct extent_io_tree *tree,
kunmap_atomic(userpage);
set_extent_uptodate(tree, cur, cur + iosize - 1,
&cached, GFP_NOFS);
- if (!parent_locked)
- unlock_extent_cached(tree, cur,
- cur + iosize - 1,
- &cached, GFP_NOFS);
+ unlock_extent_cached(tree, cur,
+ cur + iosize - 1,
+ &cached, GFP_NOFS);
break;
}
em = __get_extent_map(inode, page, pg_offset, cur,
end - cur + 1, get_extent, em_cached);
if (IS_ERR_OR_NULL(em)) {
SetPageError(page);
- if (!parent_locked)
- unlock_extent(tree, cur, end);
+ unlock_extent(tree, cur, end);
break;
}
extent_offset = cur - em->start;
@@ -3038,12 +3035,9 @@ static int __do_readpage(struct extent_io_tree *tree,
set_extent_uptodate(tree, cur, cur + iosize - 1,
&cached, GFP_NOFS);
- if (parent_locked)
- free_extent_state(cached);
- else
- unlock_extent_cached(tree, cur,
- cur + iosize - 1,
- &cached, GFP_NOFS);
+ unlock_extent_cached(tree, cur,
+ cur + iosize - 1,
+ &cached, GFP_NOFS);
cur = cur + iosize;
pg_offset += iosize;
continue;
@@ -3052,8 +3046,7 @@ static int __do_readpage(struct extent_io_tree *tree,
if (test_range_bit(tree, cur, cur_end,
EXTENT_UPTODATE, 1, NULL)) {
check_page_uptodate(tree, page);
- if (!parent_locked)
- unlock_extent(tree, cur, cur + iosize - 1);
+ unlock_extent(tree, cur, cur + iosize - 1);
cur = cur + iosize;
pg_offset += iosize;
continue;
@@ -3063,8 +3056,7 @@ static int __do_readpage(struct extent_io_tree *tree,
*/
if (block_start == EXTENT_MAP_INLINE) {
SetPageError(page);
- if (!parent_locked)
- unlock_extent(tree, cur, cur + iosize - 1);
+ unlock_extent(tree, cur, cur + iosize - 1);
cur = cur + iosize;
pg_offset += iosize;
continue;
@@ -3083,8 +3075,7 @@ static int __do_readpage(struct extent_io_tree *tree,
*bio_flags = this_bio_flag;
} else {
SetPageError(page);
- if (!parent_locked)
- unlock_extent(tree, cur, cur + iosize - 1);
+ unlock_extent(tree, cur, cur + iosize - 1);
}
cur = cur + iosize;
pg_offset += iosize;
@@ -3213,20 +3204,6 @@ int extent_read_full_page(struct extent_io_tree *tree, struct page *page,
return ret;
}
-int extent_read_full_page_nolock(struct extent_io_tree *tree, struct page *page,
- get_extent_t *get_extent, int mirror_num)
-{
- struct bio *bio = NULL;
- unsigned long bio_flags = EXTENT_BIO_PARENT_LOCKED;
- int ret;
-
- ret = __do_readpage(tree, page, get_extent, NULL, &bio, mirror_num,
- &bio_flags, READ, NULL);
- if (bio)
- ret = submit_one_bio(READ, bio, mirror_num, bio_flags);
- return ret;
-}
-
static noinline void update_nr_written(struct page *page,
struct writeback_control *wbc,
unsigned long nr_written)
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