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| author | Christoph Hellwig <hch@lst.de> | 2021-10-19 08:25:30 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-10-22 08:36:55 -0600 |
| commit | 1e03a36bdff4709c1bbf0f57f60ae3f776d51adf (patch) | |
| tree | c0036f9aa7fead90fc9ed6d3c4001a71881898ce /block/bdev.c | |
| parent | 680e667bc2e4e458a373bbfd367b7174e4972eb5 (diff) | |
| download | lwn-1e03a36bdff4709c1bbf0f57f60ae3f776d51adf.tar.gz lwn-1e03a36bdff4709c1bbf0f57f60ae3f776d51adf.zip | |
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.c | 17 |
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); |