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-rw-r--r--fs/ext4/ext4.h2
-rw-r--r--fs/ext4/extents.c5
2 files changed, 6 insertions, 1 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 7bc7c72..a74b89c 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -517,6 +517,8 @@ struct ext4_new_group_data {
EXT4_GET_BLOCKS_CREATE_UNINIT_EXT)
/* Punch out blocks of an extent */
#define EXT4_GET_BLOCKS_PUNCH_OUT_EXT 0x0020
+ /* Don't normalize allocation size (used for fallocate) */
+#define EXT4_GET_BLOCKS_NO_NORMALIZE 0x0040
/*
* Flags used by ext4_free_blocks
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 88ff3a7..ae65f24 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -3554,6 +3554,8 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
else
/* disable in-core preallocation for non-regular files */
ar.flags = 0;
+ if (flags & EXT4_GET_BLOCKS_NO_NORMALIZE)
+ ar.flags |= EXT4_MB_HINT_NOPREALLOC;
newblock = ext4_mb_new_blocks(handle, &ar, &err);
if (!newblock)
goto out2;
@@ -3807,7 +3809,8 @@ retry:
break;
}
ret = ext4_map_blocks(handle, inode, &map,
- EXT4_GET_BLOCKS_CREATE_UNINIT_EXT);
+ EXT4_GET_BLOCKS_CREATE_UNINIT_EXT |
+ EXT4_GET_BLOCKS_NO_NORMALIZE);
if (ret <= 0) {
#ifdef EXT4FS_DEBUG
WARN_ON(ret <= 0);