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xfs: don't pass iomap flags to xfs_reflink_allocate_cow 

Don't pass raw iomap flags to xfs_reflink_allocate_cow; signal our
intention with a boolean argument.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
hifive-unleashed-5.1
Darrick J. Wong 2019-02-21 16:26:35 -08:00
parent 081a8ae2a5
commit affe250a08
3 changed files with 10 additions and 9 deletions
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13
fs/xfs/xfs_iomap.c
View File

@ -983,6 +983,7 @@ xfs_file_iomap_begin(
*/
if (xfs_is_cow_inode(ip)) {
struct xfs_bmbt_irec orig = imap;
bool directio = (flags & IOMAP_DIRECT);
/* if zeroing doesn't need COW allocation, then we are done. */
if ((flags & IOMAP_ZERO) &&
@ -991,19 +992,19 @@ xfs_file_iomap_begin(
/* may drop and re-acquire the ilock */
error = xfs_reflink_allocate_cow(ip, &imap, &shared, &lockmode,
flags);
directio);
if (error)
goto out_unlock;
/*
* For buffered writes we need to report the address of the
* previous block (if there was any) so that the higher level
* write code can perform read-modify-write operations. For
* direct I/O code, which must be block aligned we need to
* report the newly allocated address.
* write code can perform read-modify-write operations; we
* won't need the CoW fork mapping until writeback. For direct
* I/O, which must be block aligned, we need to report the
* newly allocated address.
*/
if (!(flags & IOMAP_DIRECT) &&
orig.br_startblock != HOLESTARTBLOCK)
if (!directio && orig.br_startblock != HOLESTARTBLOCK)
imap = orig;
end_fsb = imap.br_startoff + imap.br_blockcount;

4
fs/xfs/xfs_reflink.c
View File

@ -361,7 +361,7 @@ xfs_reflink_allocate_cow(
struct xfs_bmbt_irec *imap,
bool *shared,
uint *lockmode,
unsigned iomap_flags)
bool convert_now)
{
struct xfs_mount *mp = ip->i_mount;
xfs_fileoff_t offset_fsb = imap->br_startoff;
@ -444,7 +444,7 @@ convert:
* to initiate a disk write. For direct I/O we are going to write the
* data and need the conversion, but for buffered writes we're done.
*/
if (!(iomap_flags & IOMAP_DIRECT) || imap->br_state == XFS_EXT_NORM)
if (!convert_now || imap->br_state == XFS_EXT_NORM)
return 0;
trace_xfs_reflink_convert_cow(ip, imap);
return xfs_reflink_convert_cow_locked(ip, offset_fsb, count_fsb);

2
fs/xfs/xfs_reflink.h
View File

@ -27,7 +27,7 @@ bool xfs_inode_need_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *imap,
extern int xfs_reflink_allocate_cow(struct xfs_inode *ip,
struct xfs_bmbt_irec *imap, bool *shared, uint *lockmode,
unsigned iomap_flags);
bool convert_now);
extern int xfs_reflink_convert_cow(struct xfs_inode *ip, xfs_off_t offset,
xfs_off_t count);