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btrfs: use round_down while calculating start position in btrfs_dirty_pages()

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round_down looks prettier than the bit mask operations.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Goldwyn Rodrigues 2020-10-14 09:55:44 -05:00 committed by David Sterba
parent 949b32732e
commit 13f0dd8f78
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/file.c
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@ -474,7 +474,7 @@ int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages,
loff_t isize = i_size_read(&inode->vfs_inode);
unsigned int extra_bits = 0;
start_pos = pos & ~((u64) fs_info->sectorsize - 1);
start_pos = round_down(pos, fs_info->sectorsize);
num_bytes = round_up(write_bytes + pos - start_pos,
fs_info->sectorsize);