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| author | David Sterba <dsterba@suse.cz> | 2014-06-05 01:59:57 +0200 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2014-09-17 13:37:17 -0700 |
| commit | ed6078f70335f158ca79790a0d0708ce558a6e9a (patch) | |
| tree | 636322e2a1e25f7db9f5982204a8fa4bc1bf9cbf /fs/btrfs/ioctl.c | |
| parent | 4e54b17ad67a2d0d59bda6edcf725dc5b281c253 (diff) | |
| download | linux-stable-ed6078f70335f158ca79790a0d0708ce558a6e9a.tar.gz linux-stable-ed6078f70335f158ca79790a0d0708ce558a6e9a.tar.bz2 linux-stable-ed6078f70335f158ca79790a0d0708ce558a6e9a.zip | |
btrfs: use DIV_ROUND_UP instead of open-coded variants
The form
(value + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT
is equivalent to
(value + PAGE_CACHE_SIZE - 1) / PAGE_CACHE_SIZE
The rest is a simple subsitution, no difference in the generated
assembly code.
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/ioctl.c')
| -rw-r--r-- | fs/btrfs/ioctl.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index d6e10d60f8ad..8eecfcce56ed 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1335,8 +1335,7 @@ int btrfs_defrag_file(struct inode *inode, struct file *file, inode->i_mapping->writeback_index = i; while (i <= last_index && defrag_count < max_to_defrag && - (i < (i_size_read(inode) + PAGE_CACHE_SIZE - 1) >> - PAGE_CACHE_SHIFT)) { + (i < DIV_ROUND_UP(i_size_read(inode), PAGE_CACHE_SIZE))) { /* * make sure we stop running if someone unmounts * the FS @@ -1359,7 +1358,7 @@ int btrfs_defrag_file(struct inode *inode, struct file *file, * the should_defrag function tells us how much to skip * bump our counter by the suggested amount */ - next = (skip + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; + next = DIV_ROUND_UP(skip, PAGE_CACHE_SIZE); i = max(i + 1, next); continue; } |