[f2fs-dev] [PATCH 07/13] f2fs: support seek for inline tail

[Wu Bo via Linux-f2fs-devel]

Fix to support seek for inline tail files

Signed-off-by: Wu Bo <bo...@vivo.com>
---
 fs/f2fs/file.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 957d1ff55350..dda4cf6d7325 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -400,6 +400,7 @@ static bool __found_offset(struct address_space *mapping,
        block_t blkaddr = f2fs_data_blkaddr(dn);
        struct inode *inode = mapping->host;
        bool compressed_cluster = false;
+       bool inline_tail = false;
 
        if (f2fs_compressed_file(inode)) {
                block_t first_blkaddr = data_blkaddr(dn->inode, dn->node_page,
@@ -408,6 +409,14 @@ static bool __found_offset(struct address_space *mapping,
                compressed_cluster = first_blkaddr == COMPRESS_ADDR;
        }
 
+       if (f2fs_has_inline_tail(inode)) {
+               loff_t isize = i_size_read(inode);
+               if ((isize >> PAGE_SHIFT == index) &&
+                   (f2fs_exist_data(inode) ||
+                    xa_get_mark(&mapping->i_pages, index, 
PAGECACHE_TAG_DIRTY)))
+                       inline_tail = true;
+       }
+
        switch (whence) {
        case SEEK_DATA:
                if (__is_valid_data_blkaddr(blkaddr))
@@ -417,11 +426,13 @@ static bool __found_offset(struct address_space *mapping,
                        return true;
                if (compressed_cluster)
                        return true;
+               if (inline_tail)
+                       return true;
                break;
        case SEEK_HOLE:
                if (compressed_cluster)
                        return false;
-               if (blkaddr == NULL_ADDR)
+               if (blkaddr == NULL_ADDR && !inline_tail)
                        return true;
                break;
        }
@@ -473,6 +484,8 @@ static loff_t f2fs_seek_block(struct file *file, loff_t 
offset, int whence)
                }
 
                end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
+               if (f2fs_has_inline_tail(inode))
+                       end_offset = COMPACT_ADDRS_PER_INODE + 1;
 
                /* find data/hole in dnode block */
                for (; dn.ofs_in_node < end_offset;
@@ -496,6 +509,8 @@ static loff_t f2fs_seek_block(struct file *file, loff_t 
offset, int whence)
                        }
                }
                f2fs_put_dnode(&dn);
+               if (f2fs_has_inline_tail(inode) && dn.ofs_in_node == end_offset)
+                       goto fail;
        }
 
        if (whence == SEEK_DATA)
-- 
2.35.3



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