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Btrfs: use existing align macros in btrfs_allocate() 

The kernel developers have implemented some often-used align macros, we should
use them instead of the complex code.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Miao Xie 2012-11-28 10:28:07 +00:00 committed by Chris Mason
parent af1be4f851
commit 797f427711
1 changed files with 4 additions and 4 deletions
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8
fs/btrfs/file.c
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@ -2054,12 +2054,12 @@ static long btrfs_fallocate(struct file *file, int mode,
u64 alloc_end;
u64 alloc_hint = 0;
u64 locked_end;
u64 mask = BTRFS_I(inode)->root->sectorsize - 1;
struct extent_map *em;
int blocksize = BTRFS_I(inode)->root->sectorsize;
int ret;
alloc_start = offset & ~mask;
alloc_end = (offset + len + mask) & ~mask;
alloc_start = round_down(offset, blocksize);
alloc_end = round_up(offset + len, blocksize);
/* Make sure we aren't being give some crap mode */
if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
@ -2140,7 +2140,7 @@ static long btrfs_fallocate(struct file *file, int mode,
}
last_byte = min(extent_map_end(em), alloc_end);
actual_end = min_t(u64, extent_map_end(em), offset + len);
last_byte = (last_byte + mask) & ~mask;
last_byte = ALIGN(last_byte, blocksize);
if (em->block_start == EXTENT_MAP_HOLE ||
(cur_offset >= inode->i_size &&