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| author | Andreas Gruenbacher <agruenba@redhat.com> | 2020-01-15 11:54:14 +0300 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2020-06-05 21:19:21 +0300 |
| commit | b0dcffd8da3339ad0300587ce7030efdf2e914a9 (patch) | |
| tree | 2f841d0407db819765fa0275c53216cf80869bb6 /fs/gfs2 | |
| parent | b66648ad6dcfefd9f02b5408c1381987c090cb13 (diff) | |
| download | linux-b0dcffd8da3339ad0300587ce7030efdf2e914a9.tar.xz | |
gfs2: Check inode generation number in delete_work_func
In delete_work_func, if the iopen glock still has an inode attached,
limit the inode lookup to that specific generation number: in the likely
case that the inode was deleted on the node on which the inode's link
count dropped to zero, we can skip verifying the on-disk block type and
reading in the inode. The same applies if another node that had the
inode open managed to delete the inode before us.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2')
| -rw-r--r-- | fs/gfs2/glock.c | 4 | ||||
| -rw-r--r-- | fs/gfs2/incore.h | 5 |
2 files changed, 7 insertions, 2 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index b6078b0e74b9..711259f68d55 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -795,6 +795,7 @@ static bool gfs2_try_evict(struct gfs2_glock *gl) ip = NULL; spin_unlock(&gl->gl_lockref.lock); if (ip) { + gl->gl_no_formal_ino = ip->i_no_formal_ino; set_bit(GIF_DEFERRED_DELETE, &ip->i_flags); d_prune_aliases(&ip->i_inode); iput(&ip->i_inode); @@ -843,7 +844,8 @@ static void delete_work_func(struct work_struct *work) } } - inode = gfs2_lookup_by_inum(sdp, no_addr, 0, GFS2_BLKST_UNLINKED); + inode = gfs2_lookup_by_inum(sdp, no_addr, gl->gl_no_formal_ino, + GFS2_BLKST_UNLINKED); if (!IS_ERR_OR_NULL(inode)) { d_prune_aliases(inode); iput(inode); diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 76ac2578e658..03ab11fab962 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -380,7 +380,10 @@ struct gfs2_glock { struct delayed_work gl_work; union { /* For iopen glocks only */ - struct delayed_work gl_delete; + struct { + struct delayed_work gl_delete; + u64 gl_no_formal_ino; + }; /* For rgrp glocks only */ struct { loff_t start; |