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ext4: replace MAX_DEFRAG_SIZE with EXT_MAX_BLOCK

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There's no reason to redefine the maximum allowable offset
in an extent-based file just for defrag; 
EXT_MAX_BLOCK already does this.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Eric Sandeen 2009-09-17 11:55:58 -04:00 committed by Theodore Ts'o
parent 5534fb5bb3
commit 0a80e9867d
3 changed files with 7 additions and 7 deletions
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1
fs/ext4/ext4.h
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@ -476,7 +476,6 @@ struct move_extent {
__u64 len; /* block length to be moved */
__u64 moved_len; /* moved block length */
};
#define MAX_DEFRAG_SIZE ((1UL<<31) - 1)
#define EXT4_EPOCH_BITS 2
#define EXT4_EPOCH_MASK ((1 << EXT4_EPOCH_BITS) - 1)

1
fs/ext4/ext4_extents.h
View File

@ -137,6 +137,7 @@ typedef int (*ext_prepare_callback)(struct inode *, struct ext4_ext_path *,
#define EXT_BREAK 1
#define EXT_REPEAT 2
/* Maximum logical block in a file; ext4_extent's ee_block is __le32 */
#define EXT_MAX_BLOCK 0xffffffff
/*

12
fs/ext4/move_extent.c
View File

@ -1040,12 +1040,12 @@ mext_check_arguments(struct inode *orig_inode,
return -EINVAL;
}
if ((orig_start > MAX_DEFRAG_SIZE) ||
(donor_start > MAX_DEFRAG_SIZE) ||
(*len > MAX_DEFRAG_SIZE) ||
(orig_start + *len > MAX_DEFRAG_SIZE)) {
ext4_debug("ext4 move extent: Can't handle over [%lu] blocks "
"[ino:orig %lu, donor %lu]\n", MAX_DEFRAG_SIZE,
if ((orig_start > EXT_MAX_BLOCK) ||
(donor_start > EXT_MAX_BLOCK) ||
(*len > EXT_MAX_BLOCK) ||
(orig_start + *len > EXT_MAX_BLOCK)) {
ext4_debug("ext4 move extent: Can't handle over [%u] blocks "
"[ino:orig %lu, donor %lu]\n", EXT_MAX_BLOCK,
orig_inode->i_ino, donor_inode->i_ino);
return -EINVAL;
}