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gfs2: Minor gfs2_inplace_reserve cleanup

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Clean up the reservation size computation logic in gfs2_inplace_reserve a
little.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
This commit is contained in:
Andreas Gruenbacher 2020-03-20 13:31:41 +01:00
parent 3ed08befeb
commit 4272006d95
1 changed files with 8 additions and 6 deletions
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14
fs/gfs2/rgrp.c
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@ -2048,12 +2048,13 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip, struct gfs2_alloc_parms *ap)
struct gfs2_blkreserv *rs = &ip->i_res;
int error = 0, rg_locked, flags = 0;
u64 last_unlinked = NO_BLOCK;
u32 target = ap->target;
int loops = 0;
u32 free_blocks, skip = 0;
if (sdp->sd_args.ar_rgrplvb)
flags |= GL_SKIP;
if (gfs2_assert_warn(sdp, ap->target))
if (gfs2_assert_warn(sdp, target))
return -EINVAL;
if (gfs2_rs_active(rs)) {
begin = rs->rs_rgd;
@ -2105,7 +2106,7 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip, struct gfs2_alloc_parms *ap)
/* Skip unusable resource groups */
if ((rs->rs_rgd->rd_flags & (GFS2_RGF_NOALLOC |
GFS2_RDF_ERROR)) ||
(loops == 0 && ap->target > rs->rs_rgd->rd_extfail_pt))
(loops == 0 && target > rs->rs_rgd->rd_extfail_pt))
goto skip_rgrp;
if (sdp->sd_args.ar_rgrplvb)
@ -2121,9 +2122,7 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip, struct gfs2_alloc_parms *ap)
/* If rgrp has enough free space, use it */
free_blocks = rgd_free(rs->rs_rgd, rs);
if (free_blocks >= ap->target ||
(loops == 2 && ap->min_target &&
free_blocks >= ap->min_target)) {
if (free_blocks >= target) {
ap->allowed = free_blocks;
return 0;
}
@ -2159,9 +2158,12 @@ next_rgrp:
return error;
}
/* Flushing the log may release space */
if (loops == 2)
if (loops == 2) {
if (ap->min_target)
target = ap->min_target;
gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL |
GFS2_LFC_INPLACE_RESERVE);
}
}
return -ENOSPC;