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authorMatthew Ahrens <[email protected]>2019-05-02 16:46:04 -0700
committerBrian Behlendorf <[email protected]>2019-05-02 16:46:04 -0700
commit8d9f616511cbb1775e0225b3315f4713135da7f6 (patch)
tree8bb2756ec178762b79fe8652178fb6b39068c304 /module/zfs/lz4.c
parentfa241660743d75a97001509c613b400fb60f26be (diff)
Reword comment in lz4_compress_zfs
The comment in lz4_compress_zfs could be more clear and specific. It also contains needlessly strong language. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Serapheim Dimitropoulos <[email protected]> Signed-off-by: Matthew Ahrens <[email protected]> Closes: #8702 Closes: #8703
Diffstat (limited to 'module/zfs/lz4.c')
-rw-r--r--module/zfs/lz4.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/module/zfs/lz4.c b/module/zfs/lz4.c
index 9b9a2e693..c04cfa7ba 100644
--- a/module/zfs/lz4.c
+++ b/module/zfs/lz4.c
@@ -63,10 +63,10 @@ lz4_compress_zfs(void *s_start, void *d_start, size_t s_len,
return (s_len);
/*
- * Encode the compressed buffer size at the start. We'll need this in
- * decompression to counter the effects of padding which might be
- * added to the compressed buffer and which, if unhandled, would
- * confuse the hell out of our decompression function.
+ * The exact compressed size is needed by the decompression routine,
+ * so it is stored at the start of the buffer. Note that this may be
+ * less than the compressed block size, which is rounded up to a
+ * multiple of 1<<ashift.
*/
*(uint32_t *)dest = BE_32(bufsiz);