btrfs: export a helper for compression hard check

inode_can_compress will be used outside of inode.c to check the
availability of setting compression flag by xattr. This patch moves
this function as an internal helper and renames it to
btrfs_inode_can_compress.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Chung-Chiang Cheng <cccheng@synology.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 47e72d7..32131a5 100644 (file)
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -384,6 +384,17 @@ static inline bool btrfs_inode_in_log(struct btrfs_inode *inode, u64 generation)
        return ret;
 }
 
+/*
+ * Check if the inode has flags compatible with compression
+ */
+static inline bool btrfs_inode_can_compress(const struct btrfs_inode *inode)
+{
+       if (inode->flags & BTRFS_INODE_NODATACOW ||
+           inode->flags & BTRFS_INODE_NODATASUM)
+               return false;
+       return true;
+}
+
 struct btrfs_dio_private {
        struct inode *inode;
 

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 8bac68d..673b925 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -481,17 +481,6 @@ static noinline int add_async_extent(struct async_chunk *cow,
 }
 
 /*
- * Check if the inode has flags compatible with compression
- */
-static inline bool inode_can_compress(struct btrfs_inode *inode)
-{
-       if (inode->flags & BTRFS_INODE_NODATACOW ||
-           inode->flags & BTRFS_INODE_NODATASUM)
-               return false;
-       return true;
-}
-
-/*
  * Check if the inode needs to be submitted to compression, based on mount
  * options, defragmentation, properties or heuristics.
  */
@@ -500,7 +489,7 @@ static inline int inode_need_compress(struct btrfs_inode *inode, u64 start,
 {
        struct btrfs_fs_info *fs_info = inode->root->fs_info;
 
-       if (!inode_can_compress(inode)) {
+       if (!btrfs_inode_can_compress(inode)) {
                WARN(IS_ENABLED(CONFIG_BTRFS_DEBUG),
                        KERN_ERR "BTRFS: unexpected compression for ino %llu\n",
                        btrfs_ino(inode));
@@ -2019,7 +2008,7 @@ int btrfs_run_delalloc_range(struct btrfs_inode *inode, struct page *locked_page
                ASSERT(!zoned || btrfs_is_data_reloc_root(inode->root));
                ret = run_delalloc_nocow(inode, locked_page, start, end,
                                         page_started, nr_written);
-       } else if (!inode_can_compress(inode) ||
+       } else if (!btrfs_inode_can_compress(inode) ||
                   !inode_need_compress(inode, start, end)) {
                if (zoned)
                        ret = run_delalloc_zoned(inode, locked_page, start, end,