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f2fs: don't miss any f2fs_balance_fs cases 

In f2fs_map_blocks, let f2fs_balance_fs detects node page modification
with dn.node_changed to avoid miss some corner cases.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2016-10-11 22:57:03 +08:00 committed by Jaegeuk Kim
parent 9434fcde1f
commit 6f2d8ed654
1 changed files with 3 additions and 8 deletions
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11
fs/f2fs/data.c
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@ -676,7 +676,6 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
unsigned int ofs_in_node, last_ofs_in_node;
blkcnt_t prealloc;
struct extent_info ei;
bool allocated = false;
block_t blkaddr;
if (!maxblocks)
@ -735,10 +734,8 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
}
} else {
err = __allocate_data_block(&dn);
if (!err) {
if (!err)
set_inode_flag(inode, FI_APPEND_WRITE);
allocated = true;
}
}
if (err)
goto sync_out;
@ -793,7 +790,6 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
err = reserve_new_blocks(&dn, prealloc);
if (err)
goto sync_out;
allocated = dn.node_changed;
map->m_len += dn.ofs_in_node - ofs_in_node;
if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) {
@ -812,9 +808,8 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
if (create) {
f2fs_unlock_op(sbi);
f2fs_balance_fs(sbi, allocated);
f2fs_balance_fs(sbi, dn.node_changed);
}
allocated = false;
goto next_dnode;
sync_out:
@ -822,7 +817,7 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
unlock_out:
if (create) {
f2fs_unlock_op(sbi);
f2fs_balance_fs(sbi, allocated);
f2fs_balance_fs(sbi, dn.node_changed);
}
out:
trace_f2fs_map_blocks(inode, map, err);