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authorLinus Torvalds <torvalds@linux-foundation.org>2021-11-01 20:25:27 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-01 20:25:27 +0300
commit19901165d90fdca1e57c9baa0d5b4c63d15c476a (patch)
tree340d5373dbc740591fe6f1d6724eca3b27609a40 /fs
parentb6773cdb0e9fa75993946753d12f05eb3bbf3bce (diff)
parent1e03a36bdff4709c1bbf0f57f60ae3f776d51adf (diff)
downloadlinux-19901165d90fdca1e57c9baa0d5b4c63d15c476a.tar.xz
Merge tag 'for-5.16/inode-sync-2021-10-29' of git://git.kernel.dk/linux-block
Pull block inode sync updates from Jens Axboe: "This contains improvements to how bdev inode syncing is handled, unifying the API" * tag 'for-5.16/inode-sync-2021-10-29' of git://git.kernel.dk/linux-block: block: simplify the block device syncing code ntfs3: use sync_blockdev_nowait fat: use sync_blockdev_nowait btrfs: use sync_blockdev xen-blkback: use sync_blockdev block: remove __sync_blockdev fs: remove __sync_filesystem
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/volumes.c2
-rw-r--r--fs/fat/inode.c6
-rw-r--r--fs/internal.h11
-rw-r--r--fs/ntfs3/inode.c2
-rw-r--r--fs/sync.c62
5 files changed, 26 insertions, 57 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 676c7c4e6e59..9533f358850e 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -508,7 +508,7 @@ btrfs_get_bdev_and_sb(const char *device_path, fmode_t flags, void *holder,
}
if (flush)
- filemap_write_and_wait((*bdev)->bd_inode->i_mapping);
+ sync_blockdev(*bdev);
ret = set_blocksize(*bdev, BTRFS_BDEV_BLOCKSIZE);
if (ret) {
blkdev_put(*bdev, flags);
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 9f3cd03668ad..a6f1c6d426d1 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -1940,10 +1940,8 @@ int fat_flush_inodes(struct super_block *sb, struct inode *i1, struct inode *i2)
ret = writeback_inode(i1);
if (!ret && i2)
ret = writeback_inode(i2);
- if (!ret) {
- struct address_space *mapping = sb->s_bdev->bd_inode->i_mapping;
- ret = filemap_flush(mapping);
- }
+ if (!ret)
+ ret = sync_blockdev_nowait(sb->s_bdev);
return ret;
}
EXPORT_SYMBOL_GPL(fat_flush_inodes);
diff --git a/fs/internal.h b/fs/internal.h
index 3cd065c8a66b..cdd83d4899bb 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -23,22 +23,11 @@ struct pipe_inode_info;
#ifdef CONFIG_BLOCK
extern void __init bdev_cache_init(void);
-extern int __sync_blockdev(struct block_device *bdev, int wait);
-void iterate_bdevs(void (*)(struct block_device *, void *), void *);
void emergency_thaw_bdev(struct super_block *sb);
#else
static inline void bdev_cache_init(void)
{
}
-
-static inline int __sync_blockdev(struct block_device *bdev, int wait)
-{
- return 0;
-}
-static inline void iterate_bdevs(void (*f)(struct block_device *, void *),
- void *arg)
-{
-}
static inline int emergency_thaw_bdev(struct super_block *sb)
{
return 0;
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index 859951d785cb..a87ab3ad3cd3 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -1046,7 +1046,7 @@ int ntfs_flush_inodes(struct super_block *sb, struct inode *i1,
if (!ret && i2)
ret = writeback_inode(i2);
if (!ret)
- ret = filemap_flush(sb->s_bdev->bd_inode->i_mapping);
+ ret = sync_blockdev_nowait(sb->s_bdev);
return ret;
}
diff --git a/fs/sync.c b/fs/sync.c
index 1373a610dc78..3ce8e2137f31 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -3,6 +3,7 @@
* High-level sync()-related operations
*/
+#include <linux/blkdev.h>
#include <linux/kernel.h>
#include <linux/file.h>
#include <linux/fs.h>
@@ -22,25 +23,6 @@
SYNC_FILE_RANGE_WAIT_AFTER)
/*
- * Do the filesystem syncing work. For simple filesystems
- * writeback_inodes_sb(sb) just dirties buffers with inodes so we have to
- * submit IO for these buffers via __sync_blockdev(). This also speeds up the
- * wait == 1 case since in that case write_inode() functions do
- * sync_dirty_buffer() and thus effectively write one block at a time.
- */
-static int __sync_filesystem(struct super_block *sb, int wait)
-{
- if (wait)
- sync_inodes_sb(sb);
- else
- writeback_inodes_sb(sb, WB_REASON_SYNC);
-
- if (sb->s_op->sync_fs)
- sb->s_op->sync_fs(sb, wait);
- return __sync_blockdev(sb->s_bdev, wait);
-}
-
-/*
* Write out and wait upon all dirty data associated with this
* superblock. Filesystem data as well as the underlying block
* device. Takes the superblock lock.
@@ -61,10 +43,25 @@ int sync_filesystem(struct super_block *sb)
if (sb_rdonly(sb))
return 0;
- ret = __sync_filesystem(sb, 0);
+ /*
+ * Do the filesystem syncing work. For simple filesystems
+ * writeback_inodes_sb(sb) just dirties buffers with inodes so we have
+ * to submit I/O for these buffers via sync_blockdev(). This also
+ * speeds up the wait == 1 case since in that case write_inode()
+ * methods call sync_dirty_buffer() and thus effectively write one block
+ * at a time.
+ */
+ writeback_inodes_sb(sb, WB_REASON_SYNC);
+ if (sb->s_op->sync_fs)
+ sb->s_op->sync_fs(sb, 0);
+ ret = sync_blockdev_nowait(sb->s_bdev);
if (ret < 0)
return ret;
- return __sync_filesystem(sb, 1);
+
+ sync_inodes_sb(sb);
+ if (sb->s_op->sync_fs)
+ sb->s_op->sync_fs(sb, 1);
+ return sync_blockdev(sb->s_bdev);
}
EXPORT_SYMBOL(sync_filesystem);
@@ -81,21 +78,6 @@ static void sync_fs_one_sb(struct super_block *sb, void *arg)
sb->s_op->sync_fs(sb, *(int *)arg);
}
-static void fdatawrite_one_bdev(struct block_device *bdev, void *arg)
-{
- filemap_fdatawrite(bdev->bd_inode->i_mapping);
-}
-
-static void fdatawait_one_bdev(struct block_device *bdev, void *arg)
-{
- /*
- * We keep the error status of individual mapping so that
- * applications can catch the writeback error using fsync(2).
- * See filemap_fdatawait_keep_errors() for details.
- */
- filemap_fdatawait_keep_errors(bdev->bd_inode->i_mapping);
-}
-
/*
* Sync everything. We start by waking flusher threads so that most of
* writeback runs on all devices in parallel. Then we sync all inodes reliably
@@ -114,8 +96,8 @@ void ksys_sync(void)
iterate_supers(sync_inodes_one_sb, NULL);
iterate_supers(sync_fs_one_sb, &nowait);
iterate_supers(sync_fs_one_sb, &wait);
- iterate_bdevs(fdatawrite_one_bdev, NULL);
- iterate_bdevs(fdatawait_one_bdev, NULL);
+ sync_bdevs(false);
+ sync_bdevs(true);
if (unlikely(laptop_mode))
laptop_sync_completion();
}
@@ -136,10 +118,10 @@ static void do_sync_work(struct work_struct *work)
*/
iterate_supers(sync_inodes_one_sb, &nowait);
iterate_supers(sync_fs_one_sb, &nowait);
- iterate_bdevs(fdatawrite_one_bdev, NULL);
+ sync_bdevs(false);
iterate_supers(sync_inodes_one_sb, &nowait);
iterate_supers(sync_fs_one_sb, &nowait);
- iterate_bdevs(fdatawrite_one_bdev, NULL);
+ sync_bdevs(false);
printk("Emergency Sync complete\n");
kfree(work);
}