If file has both cold and compress flag, during f2fs_ioc_compress_file(),
f2fs will trigger IPU for non-compress cluster and OPU for compress
cluster, so that, data of the file may be fragmented.
Fix it by always triggering OPU for IOs from user mode compression.
Signed-off-by: Chao Yu <c...@kernel.org>
---
fs/f2fs/data.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 2a38d2cc2140..d4b59c57d827 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2665,6 +2665,11 @@ bool f2fs_should_update_outplace(struct inode *inode,
struct f2fs_io_info *fio)
return true;
if (f2fs_is_atomic_file(inode))
return true;
+ /* rewrite low ratio compress data w/ OPU mode to avoid fragmentation */
+ if (f2fs_compressed_file(inode) &&
+ F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER &&
+ is_inode_flag_set(inode, FI_ENABLE_COMPRESS))
+ return true;
/* swap file is migrating in aligned write mode */
if (is_inode_flag_set(inode, FI_ALIGNED_WRITE))
--
2.40.1
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