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ext4: fix missing call to trace_ext4_ext_map_blocks_exit 

When ext4_ext_handle_uninitialized_extents(), we will directly return
from ext4_ext_map_blocks().  The trace point of
trace_ext4_ext_map_blocks_exit isn't called, and the user doesn't see
any result.  This patch tries to fix this problem.

Meanwhile in ext4_ext_handle_uninitialized_extents it returns errors
or the number of allocated blocks.  So 'ret' variable can be removed
due to previously modifications.

Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
This commit is contained in:
Zheng Liu 2012-11-08 14:47:52 -05:00 committed by Theodore Ts'o
parent 19b303d8b5
commit 3779473246
1 changed files with 4 additions and 3 deletions
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7
fs/ext4/extents.c
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@ -3911,7 +3911,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
struct ext4_extent newex, *ex, *ex2;
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
ext4_fsblk_t newblock = 0;
int free_on_err = 0, err = 0, depth, ret;
int free_on_err = 0, err = 0, depth;
unsigned int allocated = 0, offset = 0;
unsigned int allocated_clusters = 0;
struct ext4_allocation_request ar;
@ -4007,10 +4007,10 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
ee_len, ee_start);
goto out;
}
ret = ext4_ext_handle_uninitialized_extents(
allocated = ext4_ext_handle_uninitialized_extents(
handle, inode, map, path, flags,
allocated, newblock);
return ret;
goto out3;
}
}
@ -4284,6 +4284,7 @@ out2:
kfree(path);
}
out3:
trace_ext4_ext_map_blocks_exit(inode, map, err ? err : allocated);
return err ? err : allocated;