diff options
Diffstat (limited to 'fs/ext4/move_extent.c')
| -rw-r--r-- | fs/ext4/move_extent.c | 55 |
1 files changed, 34 insertions, 21 deletions
diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index 4c4491cef35..e4bd8761498 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -19,14 +19,29 @@ #include "ext4_extents.h" #include "ext4.h" -#define get_ext_path(path, inode, block, ret) \ - do { \ - path = ext4_ext_find_extent(inode, block, path); \ - if (IS_ERR(path)) { \ - ret = PTR_ERR(path); \ - path = NULL; \ - } \ - } while (0) +/** + * get_ext_path - Find an extent path for designated logical block number. + * + * @inode: an inode which is searched + * @lblock: logical block number to find an extent path + * @path: pointer to an extent path pointer (for output) + * + * ext4_ext_find_extent wrapper. Return 0 on success, or a negative error value + * on failure. + */ +static inline int +get_ext_path(struct inode *inode, ext4_lblk_t lblock, + struct ext4_ext_path **path) +{ + int ret = 0; + + *path = ext4_ext_find_extent(inode, lblock, *path); + if (IS_ERR(*path)) { + ret = PTR_ERR(*path); + *path = NULL; + } + return ret; +} /** * copy_extent_status - Copy the extent's initialization status @@ -283,7 +298,7 @@ mext_insert_across_blocks(handle_t *handle, struct inode *orig_inode, } if (new_flag) { - get_ext_path(orig_path, orig_inode, eblock, err); + err = get_ext_path(orig_inode, eblock, &orig_path); if (orig_path == NULL) goto out; @@ -293,8 +308,8 @@ mext_insert_across_blocks(handle_t *handle, struct inode *orig_inode, } if (end_flag) { - get_ext_path(orig_path, orig_inode, - le32_to_cpu(end_ext->ee_block) - 1, err); + err = get_ext_path(orig_inode, + le32_to_cpu(end_ext->ee_block) - 1, &orig_path); if (orig_path == NULL) goto out; @@ -631,12 +646,12 @@ mext_replace_branches(handle_t *handle, struct inode *orig_inode, mext_double_down_write(orig_inode, donor_inode); /* Get the original extent for the block "orig_off" */ - get_ext_path(orig_path, orig_inode, orig_off, err); + err = get_ext_path(orig_inode, orig_off, &orig_path); if (orig_path == NULL) goto out; /* Get the donor extent for the head */ - get_ext_path(donor_path, donor_inode, donor_off, err); + err = get_ext_path(donor_inode, donor_off, &donor_path); if (donor_path == NULL) goto out; depth = ext_depth(orig_inode); @@ -678,7 +693,7 @@ mext_replace_branches(handle_t *handle, struct inode *orig_inode, if (orig_path) ext4_ext_drop_refs(orig_path); - get_ext_path(orig_path, orig_inode, orig_off, err); + err = get_ext_path(orig_inode, orig_off, &orig_path); if (orig_path == NULL) goto out; depth = ext_depth(orig_inode); @@ -692,8 +707,7 @@ mext_replace_branches(handle_t *handle, struct inode *orig_inode, if (donor_path) ext4_ext_drop_refs(donor_path); - get_ext_path(donor_path, donor_inode, - donor_off, err); + err = get_ext_path(donor_inode, donor_off, &donor_path); if (donor_path == NULL) goto out; depth = ext_depth(donor_inode); @@ -1154,12 +1168,12 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, if (file_end < block_end) len -= block_end - file_end; - get_ext_path(orig_path, orig_inode, block_start, ret); + ret = get_ext_path(orig_inode, block_start, &orig_path); if (orig_path == NULL) goto out2; /* Get path structure to check the hole */ - get_ext_path(holecheck_path, orig_inode, block_start, ret); + ret = get_ext_path(orig_inode, block_start, &holecheck_path); if (holecheck_path == NULL) goto out; @@ -1289,8 +1303,7 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, /* Decrease buffer counter */ if (holecheck_path) ext4_ext_drop_refs(holecheck_path); - get_ext_path(holecheck_path, orig_inode, - seq_start, ret); + ret = get_ext_path(orig_inode, seq_start, &holecheck_path); if (holecheck_path == NULL) break; depth = holecheck_path->p_depth; @@ -1298,7 +1311,7 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, /* Decrease buffer counter */ if (orig_path) ext4_ext_drop_refs(orig_path); - get_ext_path(orig_path, orig_inode, seq_start, ret); + ret = get_ext_path(orig_inode, seq_start, &orig_path); if (orig_path == NULL) break; |