diff options
| -rw-r--r-- | fs/xfs/xfs_rtalloc.c | 41 |
1 files changed, 21 insertions, 20 deletions
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index 11c58f12bcb2..af357704895d 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -338,10 +338,10 @@ xfs_rtallocate_extent_exact( xfs_rtxlen_t prod, /* extent product factor */ xfs_rtxnum_t *rtx) /* out: start rtext allocated */ { - int error; - xfs_rtxlen_t i; /* extent length trimmed due to prod */ - int isfree; /* extent is free */ xfs_rtxnum_t next; /* next rtext to try (dummy) */ + xfs_rtxlen_t alloclen; /* candidate length */ + int isfree; /* extent is free */ + int error; ASSERT(minlen % prod == 0); ASSERT(maxlen % prod == 0); @@ -352,25 +352,26 @@ xfs_rtallocate_extent_exact( if (error) return error; - if (!isfree) { - /* - * If not, allocate what there is, if it's at least minlen. - */ - maxlen = next - start; - if (maxlen < minlen) - return -ENOSPC; - - /* - * Trim off tail of extent, if prod is specified. - */ - if (prod > 1 && (i = maxlen % prod)) { - maxlen -= i; - if (maxlen < minlen) - return -ENOSPC; - } + if (isfree) { + /* start to maxlen is all free; allocate it. */ + *len = maxlen; + *rtx = start; + return 0; } - *len = maxlen; + /* + * If not, allocate what there is, if it's at least minlen. + */ + alloclen = next - start; + if (alloclen < minlen) + return -ENOSPC; + + /* Ensure alloclen is a multiple of prod. */ + alloclen = xfs_rtalloc_align_len(alloclen, prod); + if (alloclen < minlen) + return -ENOSPC; + + *len = alloclen; *rtx = start; return 0; } |