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f2fs: do not preallocate block unaligned to 4KB 

Previously f2fs_preallocate_blocks() tries to allocate unaligned blocks.
In f2fs_write_begin(), however, prepare_write_begin() does not skip its
allocation due to (len != 4KB).
So, it needs locking node page twice unexpectedly.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2016-05-07 08:52:57 -07:00
parent 79344efb93
commit 0080c50764
1 changed files with 2 additions and 2 deletions
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4
fs/f2fs/data.c
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@ -582,8 +582,8 @@ ssize_t f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from)
struct f2fs_map_blocks map;
ssize_t ret = 0;
map.m_lblk = F2FS_BYTES_TO_BLK(iocb->ki_pos);
map.m_len = F2FS_BLK_ALIGN(iov_iter_count(from));
map.m_lblk = F2FS_BLK_ALIGN(iocb->ki_pos);
map.m_len = F2FS_BYTES_TO_BLK(iov_iter_count(from));
map.m_next_pgofs = NULL;
if (f2fs_encrypted_inode(inode))