[PATCH 3/4] btrfs: lz4: add wrapper for context size estimation
From: David Sterba <hidden>
Date: 2012-02-13 19:05:36
Subsystem:
btrfs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Chris Mason, David Sterba, Alexander Viro, Christian Brauner, Linus Torvalds
Currently 16K for 32bit and 64bit. Signed-off-by: David Sterba <redacted> --- fs/btrfs/lz4.c | 9 +++++++++ fs/btrfs/lz4.h | 3 +++ 2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/lz4.c b/fs/btrfs/lz4.c
index e41d0cf..105ea9c 100644
--- a/fs/btrfs/lz4.c
+++ b/fs/btrfs/lz4.c@@ -808,3 +808,12 @@ _output_error: return (int) (-(((char*)ip)-source)); } +int LZ4_context_size(void) +{ + return sizeof(struct refTables); +} +int LZ4_context64k_size(void) +{ + return sizeof(struct refTables); +} +
diff --git a/fs/btrfs/lz4.h b/fs/btrfs/lz4.h
index bbd5e12..b0f8cc7 100644
--- a/fs/btrfs/lz4.h
+++ b/fs/btrfs/lz4.h@@ -102,6 +102,9 @@ int LZ4_compress64kCtx(void** ctx, char* dest, int isize); +int LZ4_context_size(void); +int LZ4_context64k_size(void); + #if defined (__cplusplus) } #endif
--
1.7.8