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| author |   Omar Sandoval <osandov@fb.com> | 2019-08-13 16:00:02 -0700 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2022-03-14 13:13:51 +0100 |
| commit | 7c0c7269f7b508ba6e4b063a9314d6bd1fb6db22 (patch) | |
| tree | 97c42d1bcd553b2ef14e5b2494b4f303585e09b1 /fs/btrfs/ctree.h | |
| parent | btrfs: add BTRFS_IOC_ENCODED_READ ioctl (diff) | |
| download | linux-dev-7c0c7269f7b508ba6e4b063a9314d6bd1fb6db22.tar.xz linux-dev-7c0c7269f7b508ba6e4b063a9314d6bd1fb6db22.zip | |
btrfs: add BTRFS_IOC_ENCODED_WRITE
The implementation resembles direct I/O: we have to flush any ordered
extents, invalidate the page cache, and do the io tree/delalloc/extent
map/ordered extent dance. From there, we can reuse the compression code
with a minor modification to distinguish the write from writeback. This
also creates inline extents when possible.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 22a3fef0a981..5745b37a7e55 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -3308,6 +3308,8 @@ void btrfs_writepage_endio_finish_ordered(struct btrfs_inode *inode, u64 end, bool uptodate); ssize_t btrfs_encoded_read(struct kiocb *iocb, struct iov_iter *iter, struct btrfs_ioctl_encoded_io_args *encoded); +ssize_t btrfs_do_encoded_write(struct kiocb *iocb, struct iov_iter *from, + const struct btrfs_ioctl_encoded_io_args *encoded); extern const struct dentry_operations btrfs_dentry_operations; extern const struct iomap_ops btrfs_dio_iomap_ops; @@ -3371,6 +3373,8 @@ int btrfs_replace_file_extents(struct btrfs_inode *inode, struct btrfs_trans_handle **trans_out); int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, struct btrfs_inode *inode, u64 start, u64 end); +ssize_t btrfs_do_write_iter(struct kiocb *iocb, struct iov_iter *from, + const struct btrfs_ioctl_encoded_io_args *encoded); int btrfs_release_file(struct inode *inode, struct file *file); int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages, size_t num_pages, loff_t pos, size_t write_bytes, |