* [PATCH 1/3] btrfs: use get_seconds() instead of btrfs wrapper
2013-10-16 19:10 trivial cleanups Zach Brown
@ 2013-10-16 19:10 ` Zach Brown
2013-10-16 19:10 ` [PATCH 2/3] btrfs: remove move_pages() Zach Brown
2013-10-16 19:10 ` [PATCH 3/3] btrfs: remove fs/btrfs/compat.h Zach Brown
2 siblings, 0 replies; 4+ messages in thread
From: Zach Brown @ 2013-10-16 19:10 UTC (permalink / raw)
To: linux-btrfs
Signed-off-by: Zach Brown <zab@redhat.com>
---
fs/btrfs/dev-replace.c | 16 ++++------------
1 file changed, 4 insertions(+), 12 deletions(-)
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index 2a9bd5b..d3ee6e7 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -38,7 +38,6 @@
#include "rcu-string.h"
#include "dev-replace.h"
-static u64 btrfs_get_seconds_since_1970(void);
static int btrfs_dev_replace_finishing(struct btrfs_fs_info *fs_info,
int scrub_ret);
static void btrfs_dev_replace_update_device_in_mapping_tree(
@@ -296,13 +295,6 @@ void btrfs_after_dev_replace_commit(struct btrfs_fs_info *fs_info)
dev_replace->cursor_left_last_write_of_item;
}
-static u64 btrfs_get_seconds_since_1970(void)
-{
- struct timespec t = CURRENT_TIME_SEC;
-
- return t.tv_sec;
-}
-
int btrfs_dev_replace_start(struct btrfs_root *root,
struct btrfs_ioctl_dev_replace_args *args)
{
@@ -390,7 +382,7 @@ int btrfs_dev_replace_start(struct btrfs_root *root,
* go to the tgtdev as well (refer to btrfs_map_block()).
*/
dev_replace->replace_state = BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED;
- dev_replace->time_started = btrfs_get_seconds_since_1970();
+ dev_replace->time_started = get_seconds();
dev_replace->cursor_left = 0;
dev_replace->committed_cursor_left = 0;
dev_replace->cursor_left_last_write_of_item = 0;
@@ -493,7 +485,7 @@ static int btrfs_dev_replace_finishing(struct btrfs_fs_info *fs_info,
: BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED;
dev_replace->tgtdev = NULL;
dev_replace->srcdev = NULL;
- dev_replace->time_stopped = btrfs_get_seconds_since_1970();
+ dev_replace->time_stopped = get_seconds();
dev_replace->item_needs_writeback = 1;
if (scrub_ret) {
@@ -668,7 +660,7 @@ static u64 __btrfs_dev_replace_cancel(struct btrfs_fs_info *fs_info)
break;
}
dev_replace->replace_state = BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED;
- dev_replace->time_stopped = btrfs_get_seconds_since_1970();
+ dev_replace->time_stopped = get_seconds();
dev_replace->item_needs_writeback = 1;
btrfs_dev_replace_unlock(dev_replace);
btrfs_scrub_cancel(fs_info);
@@ -703,7 +695,7 @@ void btrfs_dev_replace_suspend_for_unmount(struct btrfs_fs_info *fs_info)
case BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED:
dev_replace->replace_state =
BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED;
- dev_replace->time_stopped = btrfs_get_seconds_since_1970();
+ dev_replace->time_stopped = get_seconds();
dev_replace->item_needs_writeback = 1;
pr_info("btrfs: suspending dev_replace for unmount\n");
break;
--
1.7.11.7
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH 2/3] btrfs: remove move_pages()
2013-10-16 19:10 trivial cleanups Zach Brown
2013-10-16 19:10 ` [PATCH 1/3] btrfs: use get_seconds() instead of btrfs wrapper Zach Brown
@ 2013-10-16 19:10 ` Zach Brown
2013-10-16 19:10 ` [PATCH 3/3] btrfs: remove fs/btrfs/compat.h Zach Brown
2 siblings, 0 replies; 4+ messages in thread
From: Zach Brown @ 2013-10-16 19:10 UTC (permalink / raw)
To: linux-btrfs
move_pages() has an inefficient backwards byte copy of regions of two
different pages. They're different pages so the regions won't overlap
and it could use memcpy().
At that point, though, move_pages() would be a slightly dimmer
re-implementation of copy_pages() that lacked the test for overlapping
page regions.
So remove move_pages() and just call copy_pages().
Signed-off-by: Zach Brown <zab@redhat.com>
---
fs/btrfs/extent_io.c | 19 +------------------
1 file changed, 1 insertion(+), 18 deletions(-)
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index c10291c..46a4022 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -5093,23 +5093,6 @@ void copy_extent_buffer(struct extent_buffer *dst, struct extent_buffer *src,
}
}
-static void move_pages(struct page *dst_page, struct page *src_page,
- unsigned long dst_off, unsigned long src_off,
- unsigned long len)
-{
- char *dst_kaddr = page_address(dst_page);
- if (dst_page == src_page) {
- memmove(dst_kaddr + dst_off, dst_kaddr + src_off, len);
- } else {
- char *src_kaddr = page_address(src_page);
- char *p = dst_kaddr + dst_off + len;
- char *s = src_kaddr + src_off + len;
-
- while (len--)
- *--p = *--s;
- }
-}
-
static inline bool areas_overlap(unsigned long src, unsigned long dst, unsigned long len)
{
unsigned long distance = (src > dst) ? src - dst : dst - src;
@@ -5220,7 +5203,7 @@ void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
cur = min_t(unsigned long, len, src_off_in_page + 1);
cur = min(cur, dst_off_in_page + 1);
- move_pages(extent_buffer_page(dst, dst_i),
+ copy_pages(extent_buffer_page(dst, dst_i),
extent_buffer_page(dst, src_i),
dst_off_in_page - cur + 1,
src_off_in_page - cur + 1, cur);
--
1.7.11.7
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH 3/3] btrfs: remove fs/btrfs/compat.h
2013-10-16 19:10 trivial cleanups Zach Brown
2013-10-16 19:10 ` [PATCH 1/3] btrfs: use get_seconds() instead of btrfs wrapper Zach Brown
2013-10-16 19:10 ` [PATCH 2/3] btrfs: remove move_pages() Zach Brown
@ 2013-10-16 19:10 ` Zach Brown
2 siblings, 0 replies; 4+ messages in thread
From: Zach Brown @ 2013-10-16 19:10 UTC (permalink / raw)
To: linux-btrfs
fs/btrfs/compat.h only contained trivial macro wrappers of drop_nlink()
and inc_nlink(). This doesn't belong in mainline.
Signed-off-by: Zach Brown <zab@redhat.com>
---
fs/btrfs/compat.h | 7 -------
fs/btrfs/compression.c | 1 -
fs/btrfs/dev-replace.c | 1 -
fs/btrfs/disk-io.c | 1 -
fs/btrfs/export.c | 1 -
fs/btrfs/extent-tree.c | 1 -
fs/btrfs/extent_io.c | 1 -
fs/btrfs/file.c | 1 -
fs/btrfs/inode.c | 5 ++---
fs/btrfs/ioctl.c | 1 -
fs/btrfs/raid56.c | 1 -
fs/btrfs/super.c | 1 -
fs/btrfs/tree-log.c | 9 ++++-----
fs/btrfs/volumes.c | 1 -
14 files changed, 6 insertions(+), 26 deletions(-)
delete mode 100644 fs/btrfs/compat.h
diff --git a/fs/btrfs/compat.h b/fs/btrfs/compat.h
deleted file mode 100644
index 7c4503e..0000000
--- a/fs/btrfs/compat.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef _COMPAT_H_
-#define _COMPAT_H_
-
-#define btrfs_drop_nlink(inode) drop_nlink(inode)
-#define btrfs_inc_nlink(inode) inc_nlink(inode)
-
-#endif /* _COMPAT_H_ */
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 6aad98c..df019c7 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -32,7 +32,6 @@
#include <linux/writeback.h>
#include <linux/bit_spinlock.h>
#include <linux/slab.h>
-#include "compat.h"
#include "ctree.h"
#include "disk-io.h"
#include "transaction.h"
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index d3ee6e7..ccfbf8b 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -26,7 +26,6 @@
#include <linux/kthread.h>
#include <linux/math64.h>
#include <asm/div64.h>
-#include "compat.h"
#include "ctree.h"
#include "extent_map.h"
#include "disk-io.h"
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 419968e..1c60ac7 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -33,7 +33,6 @@
#include <linux/uuid.h>
#include <linux/semaphore.h>
#include <asm/unaligned.h>
-#include "compat.h"
#include "ctree.h"
#include "disk-io.h"
#include "transaction.h"
diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index 4b86916..41422a3 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -5,7 +5,6 @@
#include "btrfs_inode.h"
#include "print-tree.h"
#include "export.h"
-#include "compat.h"
#define BTRFS_FID_SIZE_NON_CONNECTABLE (offsetof(struct btrfs_fid, \
parent_objectid) / 4)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 9be5e35..a32b523 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -25,7 +25,6 @@
#include <linux/slab.h>
#include <linux/ratelimit.h>
#include <linux/percpu_counter.h>
-#include "compat.h"
#include "hash.h"
#include "ctree.h"
#include "disk-io.h"
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 46a4022..c7a5089 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -13,7 +13,6 @@
#include <linux/cleancache.h>
#include "extent_io.h"
#include "extent_map.h"
-#include "compat.h"
#include "ctree.h"
#include "btrfs_inode.h"
#include "volumes.h"
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index d12107e..98b8a81 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -39,7 +39,6 @@
#include "print-tree.h"
#include "tree-log.h"
#include "locking.h"
-#include "compat.h"
#include "volumes.h"
static struct kmem_cache *btrfs_inode_defrag_cachep;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d468246..3afe2a6 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -43,7 +43,6 @@
#include <linux/btrfs.h>
#include <linux/blkdev.h>
#include <linux/posix_acl_xattr.h>
-#include "compat.h"
#include "ctree.h"
#include "disk-io.h"
#include "transaction.h"
@@ -3645,7 +3644,7 @@ int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
int ret;
ret = __btrfs_unlink_inode(trans, root, dir, inode, name, name_len);
if (!ret) {
- btrfs_drop_nlink(inode);
+ drop_nlink(inode);
ret = btrfs_update_inode(trans, root, inode);
}
return ret;
@@ -5738,7 +5737,7 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
goto fail;
}
- btrfs_inc_nlink(inode);
+ inc_nlink(inode);
inode_inc_iversion(inode);
inode->i_ctime = CURRENT_TIME;
ihold(inode);
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 98d4ffe..81cf9d8 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -44,7 +44,6 @@
#include <linux/uuid.h>
#include <linux/btrfs.h>
#include <linux/uaccess.h>
-#include "compat.h"
#include "ctree.h"
#include "disk-io.h"
#include "transaction.h"
diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index d0ecfbd..24ac218 100644
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -33,7 +33,6 @@
#include <linux/raid/xor.h>
#include <linux/vmalloc.h>
#include <asm/div64.h>
-#include "compat.h"
#include "ctree.h"
#include "extent_map.h"
#include "disk-io.h"
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 2bdaafd..6e20a17 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -42,7 +42,6 @@
#include <linux/cleancache.h>
#include <linux/ratelimit.h>
#include <linux/btrfs.h>
-#include "compat.h"
#include "delayed-inode.h"
#include "ctree.h"
#include "disk-io.h"
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 849b729..540cd57 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -26,7 +26,6 @@
#include "locking.h"
#include "print-tree.h"
#include "backref.h"
-#include "compat.h"
#include "tree-log.h"
#include "hash.h"
@@ -936,7 +935,7 @@ again:
parent_objectid,
victim_name,
victim_name_len)) {
- btrfs_inc_nlink(inode);
+ inc_nlink(inode);
btrfs_release_path(path);
ret = btrfs_unlink_inode(trans, root, dir,
@@ -1006,7 +1005,7 @@ again:
victim_parent = read_one_inode(root,
parent_objectid);
if (victim_parent) {
- btrfs_inc_nlink(inode);
+ inc_nlink(inode);
btrfs_release_path(path);
ret = btrfs_unlink_inode(trans, root,
@@ -1480,7 +1479,7 @@ static noinline int link_to_fixup_dir(struct btrfs_trans_handle *trans,
if (!inode->i_nlink)
set_nlink(inode, 1);
else
- btrfs_inc_nlink(inode);
+ inc_nlink(inode);
ret = btrfs_update_inode(trans, root, inode);
} else if (ret == -EEXIST) {
ret = 0;
@@ -1841,7 +1840,7 @@ again:
goto out;
}
- btrfs_inc_nlink(inode);
+ inc_nlink(inode);
ret = btrfs_unlink_inode(trans, root, dir, inode,
name, name_len);
if (!ret)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index fe0f2ef..6624ae7 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -28,7 +28,6 @@
#include <linux/raid/pq.h>
#include <linux/semaphore.h>
#include <asm/div64.h>
-#include "compat.h"
#include "ctree.h"
#include "extent_map.h"
#include "disk-io.h"
--
1.7.11.7
^ permalink raw reply related [flat|nested] 4+ messages in thread