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xfs: cleanup use of the XFS_ALLOC_ flags 

Always set XFS_ALLOC_USERDATA for data fork allocations, and check it
in xfs_alloc_is_userdata instead of the current obsfucated check.
Also remove the xfs_alloc_is_userdata and xfs_alloc_allow_busy_reuse
helpers to make the code a little easier to understand.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig 2019-10-30 12:25:00 -07:00 committed by Darrick J. Wong
parent fd638f1de1
commit c34d570d15
5 changed files with 11 additions and 24 deletions
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8
fs/xfs/libxfs/xfs_alloc.c
View File

@ -331,7 +331,7 @@ xfs_alloc_compute_diff(
xfs_extlen_t newlen1=0; /* length with newbno1 */
xfs_extlen_t newlen2=0; /* length with newbno2 */
xfs_agblock_t wantend; /* end of target extent */
bool userdata = xfs_alloc_is_userdata(datatype);
bool userdata = datatype & XFS_ALLOC_USERDATA;
ASSERT(freelen >= wantlen);
freeend = freebno + freelen;
@ -1041,9 +1041,9 @@ xfs_alloc_ag_vextent_small(
goto out;
xfs_extent_busy_reuse(args->mp, args->agno, fbno, 1,
xfs_alloc_allow_busy_reuse(args->datatype));
(args->datatype & XFS_ALLOC_NOBUSY));
if (xfs_alloc_is_userdata(args->datatype)) {
if (args->datatype & XFS_ALLOC_USERDATA) {
struct xfs_buf *bp;
bp = xfs_btree_get_bufs(args->mp, args->tp, args->agno, fbno);
@ -2381,7 +2381,7 @@ xfs_alloc_fix_freelist(
* somewhere else if we are not being asked to try harder at this
* point
*/
if (pag->pagf_metadata && xfs_alloc_is_userdata(args->datatype) &&
if (pag->pagf_metadata && (args->datatype & XFS_ALLOC_USERDATA) &&
(flags & XFS_ALLOC_FLAG_TRYLOCK)) {
ASSERT(!(flags & XFS_ALLOC_FLAG_FREEING));
goto out_agbp_relse;

12
fs/xfs/libxfs/xfs_alloc.h
View File

@ -84,18 +84,6 @@ typedef struct xfs_alloc_arg {
#define XFS_ALLOC_INITIAL_USER_DATA (1 << 1)/* special case start of file */
#define XFS_ALLOC_NOBUSY (1 << 2)/* Busy extents not allowed */
static inline bool
xfs_alloc_is_userdata(int datatype)
{
return (datatype & ~XFS_ALLOC_NOBUSY) != 0;
}
static inline bool
xfs_alloc_allow_busy_reuse(int datatype)
{
return (datatype & XFS_ALLOC_NOBUSY) == 0;
}
/* freespace limit calculations */
#define XFS_ALLOC_AGFL_RESERVE 4
unsigned int xfs_alloc_set_aside(struct xfs_mount *mp);

11
fs/xfs/libxfs/xfs_bmap.c
View File

@ -3022,7 +3022,7 @@ xfs_bmap_adjacent(
mp = ap->ip->i_mount;
nullfb = ap->tp->t_firstblock == NULLFSBLOCK;
rt = XFS_IS_REALTIME_INODE(ap->ip) &&
xfs_alloc_is_userdata(ap->datatype);
(ap->datatype & XFS_ALLOC_USERDATA);
fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp,
ap->tp->t_firstblock);
/*
@ -3375,7 +3375,7 @@ xfs_bmap_btalloc(
if (ap->flags & XFS_BMAPI_COWFORK)
align = xfs_get_cowextsz_hint(ap->ip);
else if (xfs_alloc_is_userdata(ap->datatype))
else if (ap->datatype & XFS_ALLOC_USERDATA)
align = xfs_get_extsz_hint(ap->ip);
if (align) {
error = xfs_bmap_extsize_align(mp, &ap->got, &ap->prev,
@ -3390,7 +3390,7 @@ xfs_bmap_btalloc(
fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp,
ap->tp->t_firstblock);
if (nullfb) {
if (xfs_alloc_is_userdata(ap->datatype) &&
if ((ap->datatype & XFS_ALLOC_USERDATA) &&
xfs_inode_is_filestream(ap->ip)) {
ag = xfs_filestream_lookup_ag(ap->ip);
ag = (ag != NULLAGNUMBER) ? ag : 0;
@ -3430,7 +3430,7 @@ xfs_bmap_btalloc(
* enough for the request. If one isn't found, then adjust
* the minimum allocation size to the largest space found.
*/
if (xfs_alloc_is_userdata(ap->datatype) &&
if ((ap->datatype & XFS_ALLOC_USERDATA) &&
xfs_inode_is_filestream(ap->ip))
error = xfs_bmap_btalloc_filestreams(ap, &args, &blen);
else
@ -3973,10 +3973,9 @@ xfs_bmap_alloc_userdata(
*/
bma->datatype = XFS_ALLOC_NOBUSY;
if (whichfork == XFS_DATA_FORK) {
bma->datatype |= XFS_ALLOC_USERDATA;
if (bma->offset == 0)
bma->datatype |= XFS_ALLOC_INITIAL_USER_DATA;
else
bma->datatype |= XFS_ALLOC_USERDATA;
if (mp->m_dalign && bma->length >= mp->m_dalign) {
error = xfs_bmap_isaeof(bma, whichfork);

2
fs/xfs/xfs_extent_busy.c
View File

@ -367,7 +367,7 @@ restart:
* If this is a metadata allocation, try to reuse the busy
* extent instead of trimming the allocation.
*/
if (!xfs_alloc_is_userdata(args->datatype) &&
if (!(args->datatype & XFS_ALLOC_USERDATA) &&
!(busyp->flags & XFS_EXTENT_BUSY_DISCARDED)) {
if (!xfs_extent_busy_update_extent(args->mp, args->pag,
busyp, fbno, flen,

2
fs/xfs/xfs_filestream.c
View File

@ -374,7 +374,7 @@ xfs_filestream_new_ag(
startag = (item->ag + 1) % mp->m_sb.sb_agcount;
}
if (xfs_alloc_is_userdata(ap->datatype))
if (ap->datatype & XFS_ALLOC_USERDATA)
flags |= XFS_PICK_USERDATA;
if (ap->tp->t_flags & XFS_TRANS_LOWMODE)
flags |= XFS_PICK_LOWSPACE;