diff options
| author | Omar Sandoval <osandov@fb.com> | 2019-08-14 02:00:02 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-03-14 15:13:51 +0300 |
| commit | 7c0c7269f7b508ba6e4b063a9314d6bd1fb6db22 (patch) | |
| tree | 97c42d1bcd553b2ef14e5b2494b4f303585e09b1 /fs/btrfs/compression.c | |
| parent | 1881fba89bd5dcd364d2e1bf561912a90a11c21a (diff) | |
| download | linux-7c0c7269f7b508ba6e4b063a9314d6bd1fb6db22.tar.xz | |
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/compression.c')
| -rw-r--r-- | fs/btrfs/compression.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index 8b3bca269de3..71d26b8a9396 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -383,7 +383,8 @@ static void finish_compressed_bio_write(struct compressed_bio *cb) cb->start, cb->start + cb->len - 1, !cb->errors); - end_compressed_writeback(inode, cb); + if (cb->writeback) + end_compressed_writeback(inode, cb); /* Note, our inode could be gone now */ /* @@ -506,7 +507,8 @@ blk_status_t btrfs_submit_compressed_write(struct btrfs_inode *inode, u64 start, struct page **compressed_pages, unsigned int nr_pages, unsigned int write_flags, - struct cgroup_subsys_state *blkcg_css) + struct cgroup_subsys_state *blkcg_css, + bool writeback) { struct btrfs_fs_info *fs_info = inode->root->fs_info; struct bio *bio = NULL; @@ -531,6 +533,7 @@ blk_status_t btrfs_submit_compressed_write(struct btrfs_inode *inode, u64 start, cb->mirror_num = 0; cb->compressed_pages = compressed_pages; cb->compressed_len = compressed_len; + cb->writeback = writeback; cb->orig_bio = NULL; cb->nr_pages = nr_pages; |