diff options
| -rw-r--r-- | fs/ext4/ext4fs.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/ext4/ext4fs.c b/fs/ext4/ext4fs.c index e2b740cac4..37b31d9f0f 100644 --- a/fs/ext4/ext4fs.c +++ b/fs/ext4/ext4fs.c @@ -61,6 +61,7 @@ int ext4fs_read_file(struct ext2fs_node *node, loff_t pos, lbaint_t delayed_skipfirst = 0; lbaint_t delayed_next = 0; char *delayed_buf = NULL; + char *start_buf = buf; short status; struct ext_block_cache cache; @@ -139,6 +140,7 @@ int ext4fs_read_file(struct ext2fs_node *node, loff_t pos, } } else { int n; + int n_left; if (previous_block_number != -1) { /* spill */ status = ext4fs_devread(delayed_start, @@ -153,8 +155,9 @@ int ext4fs_read_file(struct ext2fs_node *node, loff_t pos, } /* Zero no more than `len' bytes. */ n = blocksize - skipfirst; - if (n > len) - n = len; + n_left = len - ( buf - start_buf ); + if (n > n_left) + n = n_left; memset(buf, 0, n); } buf += blocksize - skipfirst; |