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authorChristoph Hellwig <hch@lst.de>2021-10-19 08:25:30 +0200
committerJens Axboe <axboe@kernel.dk>2021-10-22 08:36:55 -0600
commit1e03a36bdff4709c1bbf0f57f60ae3f776d51adf (patch)
treec0036f9aa7fead90fc9ed6d3c4001a71881898ce /block/bdev.c
parent680e667bc2e4e458a373bbfd367b7174e4972eb5 (diff)
block: simplify the block device syncing code
Get rid of the indirections and just provide a sync_bdevs helper for the generic sync code. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20211019062530.2174626-8-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/bdev.c')
-rw-r--r--block/bdev.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/block/bdev.c b/block/bdev.c
index 9a33c414f450..b4dab2fb6a74 100644
--- a/block/bdev.c
+++ b/block/bdev.c
@@ -1021,7 +1021,7 @@ int __invalidate_device(struct block_device *bdev, bool kill_dirty)
}
EXPORT_SYMBOL(__invalidate_device);
-void iterate_bdevs(void (*func)(struct block_device *, void *), void *arg)
+void sync_bdevs(bool wait)
{
struct inode *inode, *old_inode = NULL;
@@ -1052,8 +1052,19 @@ void iterate_bdevs(void (*func)(struct block_device *, void *), void *arg)
bdev = I_BDEV(inode);
mutex_lock(&bdev->bd_disk->open_mutex);
- if (bdev->bd_openers)
- func(bdev, arg);
+ if (!bdev->bd_openers) {
+ ; /* skip */
+ } else if (wait) {
+ /*
+ * 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(inode->i_mapping);
+ } else {
+ filemap_fdatawrite(inode->i_mapping);
+ }
mutex_unlock(&bdev->bd_disk->open_mutex);
spin_lock(&blockdev_superblock->s_inode_list_lock);