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gfs2: factor evict_unlinked_inode out of gfs2_evict_inode

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Function gfs2_evict_inode is way too big, complex and unreadable. This
is a baby step toward breaking it apart to be more readable. It factors
out the portion that deletes the online bits for a dinode that is
unlinked and needs to be deleted. A future patch will factor out more.
(If I factor out too much, the patch itself becomes unreadable).

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
This commit is contained in:
Bob Peterson 2020-09-11 09:29:25 -05:00 committed by Andreas Gruenbacher
parent 23d828fc3f
commit 6e7e9a5055
1 changed files with 40 additions and 27 deletions
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67
fs/gfs2/super.c
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@ -1310,6 +1310,45 @@ static bool gfs2_upgrade_iopen_glock(struct inode *inode)
return true;
}
/**
* evict_unlinked_inode - delete the pieces of an unlinked evicted inode
* @inode: The inode to evict
*/
static int evict_unlinked_inode(struct inode *inode)
{
struct gfs2_inode *ip = GFS2_I(inode);
int ret;
if (S_ISDIR(inode->i_mode) &&
(ip->i_diskflags & GFS2_DIF_EXHASH)) {
ret = gfs2_dir_exhash_dealloc(ip);
if (ret)
goto out;
}
if (ip->i_eattr) {
ret = gfs2_ea_dealloc(ip);
if (ret)
goto out;
}
if (!gfs2_is_stuffed(ip)) {
ret = gfs2_file_dealloc(ip);
if (ret)
goto out;
}
/* We're about to clear the bitmap for the dinode, but as soon as we
do, gfs2_create_inode can create another inode at the same block
location and try to set gl_object again. We clear gl_object here so
that subsequent inode creates don't see an old gl_object. */
glock_clear_object(ip->i_gl, ip);
ret = gfs2_dinode_dealloc(ip);
gfs2_inode_remember_delete(ip->i_gl, ip->i_no_formal_ino);
out:
return ret;
}
/**
* gfs2_evict_inode - Remove an inode from cache
* @inode: The inode to evict
@ -1396,33 +1435,7 @@ out_delete:
goto out_truncate;
}
}
if (S_ISDIR(inode->i_mode) &&
(ip->i_diskflags & GFS2_DIF_EXHASH)) {
ret = gfs2_dir_exhash_dealloc(ip);
if (ret)
goto out_unlock;
}
if (ip->i_eattr) {
ret = gfs2_ea_dealloc(ip);
if (ret)
goto out_unlock;
}
if (!gfs2_is_stuffed(ip)) {
ret = gfs2_file_dealloc(ip);
if (ret)
goto out_unlock;
}
/* We're about to clear the bitmap for the dinode, but as soon as we
do, gfs2_create_inode can create another inode at the same block
location and try to set gl_object again. We clear gl_object here so
that subsequent inode creates don't see an old gl_object. */
glock_clear_object(ip->i_gl, ip);
ret = gfs2_dinode_dealloc(ip);
gfs2_inode_remember_delete(ip->i_gl, ip->i_no_formal_ino);
ret = evict_unlinked_inode(inode);
goto out_unlock;
out_truncate: