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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/ordered-data.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/ordered-data.h')
| -rw-r--r-- | fs/btrfs/ordered-data.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h index d5d41f2290c1..ecad67a2c745 100644 --- a/fs/btrfs/ordered-data.h +++ b/fs/btrfs/ordered-data.h @@ -74,6 +74,8 @@ enum { BTRFS_ORDERED_LOGGED_CSUM, /* We wait for this extent to complete in the current transaction */ BTRFS_ORDERED_PENDING, + /* BTRFS_IOC_ENCODED_WRITE */ + BTRFS_ORDERED_ENCODED, }; /* BTRFS_ORDERED_* flags that specify the type of the extent. */ @@ -81,7 +83,8 @@ enum { (1UL << BTRFS_ORDERED_NOCOW) | \ (1UL << BTRFS_ORDERED_PREALLOC) | \ (1UL << BTRFS_ORDERED_COMPRESSED) | \ - (1UL << BTRFS_ORDERED_DIRECT)) + (1UL << BTRFS_ORDERED_DIRECT) | \ + (1UL << BTRFS_ORDERED_ENCODED)) struct btrfs_ordered_extent { /* logical offset in the file */ |