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Fix jdata data corruption and glock reference leak

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Merge tag 'gfs2-v5.10-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

Pull gfs2 fixes from Andreas Gruenbacher:
 "Fix jdata data corruption and glock reference leak"

* tag 'gfs2-v5.10-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  gfs2: Fix case in which ail writes are done to jdata holes
  Revert "gfs2: Ignore journal log writes for jdata holes"
  gfs2: fix possible reference leak in gfs2_check_blk_type
This commit is contained in:
Linus Torvalds 2020-11-12 16:37:14 -08:00
commit 20ca21dfcc
4 changed files with 10 additions and 12 deletions
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2
fs/gfs2/aops.c
View File

@ -77,7 +77,7 @@ static int gfs2_get_block_noalloc(struct inode *inode, sector_t lblock,
if (error)
return error;
if (!buffer_mapped(bh_result))
return -EIO;
return -ENODATA;
return 0;
}

8
fs/gfs2/bmap.c
View File

@ -1301,12 +1301,8 @@ int gfs2_block_map(struct inode *inode, sector_t lblock,
trace_gfs2_bmap(ip, bh_map, lblock, create, 1);
ret = gfs2_iomap_get(inode, pos, length, flags, &iomap, &mp);
if (!ret && iomap.type == IOMAP_HOLE) {
if (create)
ret = gfs2_iomap_alloc(inode, &iomap, &mp);
else
ret = -ENODATA;
}
if (create && !ret && iomap.type == IOMAP_HOLE)
ret = gfs2_iomap_alloc(inode, &iomap, &mp);
release_metapath(&mp);
if (ret)
goto out;

2
fs/gfs2/log.c
View File

@ -132,6 +132,8 @@ __acquires(&sdp->sd_ail_lock)
spin_unlock(&sdp->sd_ail_lock);
ret = generic_writepages(mapping, wbc);
spin_lock(&sdp->sd_ail_lock);
if (ret == -ENODATA) /* if a jdata write into a new hole */
ret = 0; /* ignore it */
if (ret || wbc->nr_to_write <= 0)
break;
return -EBUSY;

10
fs/gfs2/rgrp.c
View File

@ -2529,13 +2529,13 @@ int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr, unsigned int type)
rbm.rgd = rgd;
error = gfs2_rbm_from_block(&rbm, no_addr);
if (WARN_ON_ONCE(error))
goto fail;
if (gfs2_testbit(&rbm, false) != type)
error = -ESTALE;
if (!WARN_ON_ONCE(error)) {
if (gfs2_testbit(&rbm, false) != type)
error = -ESTALE;
}
gfs2_glock_dq_uninit(&rgd_gh);
fail:
return error;
}