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authorNikolay Borisov <nborisov@suse.com>2020-09-14 12:37:06 +0300
committerDavid Sterba <dsterba@suse.com>2020-10-07 13:13:20 +0300
commit1a5ee1e6260368da8347e66321e157a7de288ef3 (patch)
tree103d6652f40e1023c80b13a9378767301563b1d1 /fs
parent208d6341e85b4f2628a90438fce5d8a2dd97d6ba (diff)
downloadlinux-1a5ee1e6260368da8347e66321e157a7de288ef3.tar.xz
btrfs: remove btrfs_get_extent indirection from __do_readpage
Now that this function is only responsible for reading data pages it's no longer necessary to pass get_extent_t parameter across several layers of functions. This patch removes this parameter from multiple functions: __get_extent_map/__do_readpage/__extent_read_full_page/ extent_read_full_page and simply calls btrfs_get_extent directly in __get_extent_map. Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/extent_io.c31
-rw-r--r--fs/btrfs/extent_io.h3
-rw-r--r--fs/btrfs/inode.c2
3 files changed, 14 insertions, 22 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 0a6cda4c30ed..4a0675ec90fa 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -3110,8 +3110,7 @@ void set_page_extent_mapped(struct page *page)
static struct extent_map *
__get_extent_map(struct inode *inode, struct page *page, size_t pg_offset,
- u64 start, u64 len, get_extent_t *get_extent,
- struct extent_map **em_cached)
+ u64 start, u64 len, struct extent_map **em_cached)
{
struct extent_map *em;
@@ -3127,7 +3126,7 @@ __get_extent_map(struct inode *inode, struct page *page, size_t pg_offset,
*em_cached = NULL;
}
- em = get_extent(BTRFS_I(inode), page, pg_offset, start, len);
+ em = btrfs_get_extent(BTRFS_I(inode), page, pg_offset, start, len);
if (em_cached && !IS_ERR_OR_NULL(em)) {
BUG_ON(*em_cached);
refcount_inc(&em->refs);
@@ -3142,9 +3141,7 @@ __get_extent_map(struct inode *inode, struct page *page, size_t pg_offset,
* XXX JDM: This needs looking at to ensure proper page locking
* return 0 on success, otherwise return error
*/
-static int __do_readpage(struct page *page,
- get_extent_t *get_extent,
- struct extent_map **em_cached,
+static int __do_readpage(struct page *page, struct extent_map **em_cached,
struct bio **bio, int mirror_num,
unsigned long *bio_flags, unsigned int read_flags,
u64 *prev_em_start)
@@ -3209,7 +3206,7 @@ static int __do_readpage(struct page *page,
break;
}
em = __get_extent_map(inode, page, pg_offset, cur,
- end - cur + 1, get_extent, em_cached);
+ end - cur + 1, em_cached);
if (IS_ERR_OR_NULL(em)) {
SetPageError(page);
unlock_extent(tree, cur, end);
@@ -3362,16 +3359,14 @@ static inline void contiguous_readpages(struct page *pages[], int nr_pages,
btrfs_lock_and_flush_ordered_range(inode, start, end, NULL);
for (index = 0; index < nr_pages; index++) {
- __do_readpage(pages[index], btrfs_get_extent, em_cached,
- bio, 0, bio_flags, REQ_RAHEAD, prev_em_start);
+ __do_readpage(pages[index], em_cached, bio, 0, bio_flags,
+ REQ_RAHEAD, prev_em_start);
put_page(pages[index]);
}
}
-static int __extent_read_full_page(struct page *page,
- get_extent_t *get_extent,
- struct bio **bio, int mirror_num,
- unsigned long *bio_flags,
+static int __extent_read_full_page(struct page *page, struct bio **bio,
+ int mirror_num, unsigned long *bio_flags,
unsigned int read_flags)
{
struct btrfs_inode *inode = BTRFS_I(page->mapping->host);
@@ -3381,20 +3376,18 @@ static int __extent_read_full_page(struct page *page,
btrfs_lock_and_flush_ordered_range(inode, start, end, NULL);
- ret = __do_readpage(page, get_extent, NULL, bio, mirror_num,
- bio_flags, read_flags, NULL);
+ ret = __do_readpage(page, NULL, bio, mirror_num, bio_flags, read_flags,
+ NULL);
return ret;
}
-int extent_read_full_page(struct page *page, get_extent_t *get_extent,
- int mirror_num)
+int extent_read_full_page(struct page *page, int mirror_num)
{
struct bio *bio = NULL;
unsigned long bio_flags = 0;
int ret;
- ret = __extent_read_full_page(page, get_extent, &bio, mirror_num,
- &bio_flags, 0);
+ ret = __extent_read_full_page(page, &bio, mirror_num, &bio_flags, 0);
if (bio)
ret = submit_one_bio(bio, mirror_num, bio_flags);
return ret;
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 06611947a9f7..272d5281bd4d 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -193,8 +193,7 @@ typedef struct extent_map *(get_extent_t)(struct btrfs_inode *inode,
int try_release_extent_mapping(struct page *page, gfp_t mask);
int try_release_extent_buffer(struct page *page);
-int extent_read_full_page(struct page *page, get_extent_t *get_extent,
- int mirror_num);
+int extent_read_full_page(struct page *page, int mirror_num);
int extent_write_full_page(struct page *page, struct writeback_control *wbc);
int extent_write_locked_range(struct inode *inode, u64 start, u64 end,
int mode);
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index ff9b22b71171..7db2cbb469e1 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -8040,7 +8040,7 @@ static int btrfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
int btrfs_readpage(struct file *file, struct page *page)
{
- return extent_read_full_page(page, btrfs_get_extent, 0);
+ return extent_read_full_page(page, 0);
}
static int btrfs_writepage(struct page *page, struct writeback_control *wbc)