From: Daeho Jeong <daehoje...@google.com>
Fix to support SEEK_DATA and SEEK_HOLE for compression files
Signed-off-by: Daeho Jeong <daehoje...@google.com>
---
fs/f2fs/file.c | 21 ++++++++++++++++++---
1 file changed, 18 insertions(+), 3 deletions(-)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 21c3aa93a8db..aa19d8bed479 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -394,9 +394,20 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t
end, int datasync)
return f2fs_do_sync_file(file, start, end, datasync, false);
}
-static bool __found_offset(struct address_space *mapping, block_t blkaddr,
- pgoff_t index, int whence)
+static bool __found_offset(struct address_space *mapping,
+ struct dnode_of_data *dn, pgoff_t index, int whence)
{
+ block_t blkaddr = f2fs_data_blkaddr(dn);
+ struct inode *inode = mapping->host;
+ bool compressed_cluster = false;
+
+ if (f2fs_compressed_file(inode)) {
+ block_t first_blkaddr = data_blkaddr(dn->inode, dn->node_page,
+ ALIGN_DOWN(dn->ofs_in_node, F2FS_I(inode)->i_cluster_size));
+
+ compressed_cluster = first_blkaddr == COMPRESS_ADDR;
+ }
+
switch (whence) {
case SEEK_DATA:
if (__is_valid_data_blkaddr(blkaddr))
@@ -404,8 +415,12 @@ static bool __found_offset(struct address_space *mapping,
block_t blkaddr,
if (blkaddr == NEW_ADDR &&
xa_get_mark(&mapping->i_pages, index, PAGECACHE_TAG_DIRTY))
return true;
+ if (compressed_cluster)
+ return true;
break;
case SEEK_HOLE:
+ if (compressed_cluster)
+ return false;
if (blkaddr == NULL_ADDR)
return true;
break;
@@ -474,7 +489,7 @@ static loff_t f2fs_seek_block(struct file *file, loff_t
offset, int whence)
goto fail;
}
- if (__found_offset(file->f_mapping, blkaddr,
+ if (__found_offset(file->f_mapping, &dn,
pgofs, whence)) {
f2fs_put_dnode(&dn);
goto found;
--
2.43.0.687.g38aa6559b0-goog
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