From 23fa18eaa71266feff7ba8d83022d9e1cc83c65a Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:42:03 +0000
Subject: [PATCH] disable pwm7
---
kernel/fs/gfs2/inode.c | 237 ++++++++++++++++++++++++++++++++++++++--------------------
1 files changed, 155 insertions(+), 82 deletions(-)
diff --git a/kernel/fs/gfs2/inode.c b/kernel/fs/gfs2/inode.c
index a52b8b0..74a6b08 100644
--- a/kernel/fs/gfs2/inode.c
+++ b/kernel/fs/gfs2/inode.c
@@ -1,10 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
* Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
*/
#include <linux/slab.h>
@@ -20,6 +17,7 @@
#include <linux/crc32.h>
#include <linux/iomap.h>
#include <linux/security.h>
+#include <linux/fiemap.h>
#include <linux/uaccess.h>
#include "gfs2.h"
@@ -117,6 +115,10 @@
* placeholder because it doesn't otherwise make sense), the on-disk block type
* is verified to be @blktype.
*
+ * When @no_formal_ino is non-zero, this function will return ERR_PTR(-ESTALE)
+ * if it detects that @no_formal_ino doesn't match the actual inode generation
+ * number. However, it doesn't always know unless @type is DT_UNKNOWN.
+ *
* Returns: A VFS inode, or an error
*/
@@ -139,7 +141,6 @@
if (inode->i_state & I_NEW) {
struct gfs2_sbd *sdp = GFS2_SB(inode);
- ip->i_no_formal_ino = no_formal_ino;
error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
if (unlikely(error))
@@ -148,7 +149,9 @@
error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
if (unlikely(error))
- goto fail_put;
+ goto fail;
+ if (blktype != GFS2_BLKST_UNLINKED)
+ gfs2_cancel_delete_work(io_gl);
if (type == DT_UNKNOWN || blktype != GFS2_BLKST_FREE) {
/*
@@ -159,13 +162,18 @@
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE,
GL_SKIP, &i_gh);
if (error)
- goto fail_put;
+ goto fail;
+
+ error = -ESTALE;
+ if (no_formal_ino &&
+ gfs2_inode_already_deleted(ip->i_gl, no_formal_ino))
+ goto fail;
if (blktype != GFS2_BLKST_FREE) {
error = gfs2_check_blk_type(sdp, no_addr,
blktype);
if (error)
- goto fail_put;
+ goto fail;
}
}
@@ -173,65 +181,74 @@
set_bit(GIF_INVALID, &ip->i_flags);
error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
if (unlikely(error))
- goto fail_put;
+ goto fail;
glock_set_object(ip->i_iopen_gh.gh_gl, ip);
gfs2_glock_put(io_gl);
io_gl = NULL;
-
- if (type == DT_UNKNOWN) {
- /* Inode glock must be locked already */
- error = gfs2_inode_refresh(GFS2_I(inode));
- if (error)
- goto fail_refresh;
- } else {
- inode->i_mode = DT2IF(type);
- }
-
- gfs2_set_iop(inode);
/* Lowest possible timestamp; will be overwritten in gfs2_dinode_in. */
inode->i_atime.tv_sec = 1LL << (8 * sizeof(inode->i_atime.tv_sec) - 1);
inode->i_atime.tv_nsec = 0;
- unlock_new_inode(inode);
+ if (type == DT_UNKNOWN) {
+ /* Inode glock must be locked already */
+ error = gfs2_inode_refresh(GFS2_I(inode));
+ if (error)
+ goto fail;
+ } else {
+ ip->i_no_formal_ino = no_formal_ino;
+ inode->i_mode = DT2IF(type);
+ }
+
+ if (gfs2_holder_initialized(&i_gh))
+ gfs2_glock_dq_uninit(&i_gh);
+
+ gfs2_set_iop(inode);
}
- if (gfs2_holder_initialized(&i_gh))
- gfs2_glock_dq_uninit(&i_gh);
+ if (no_formal_ino && ip->i_no_formal_ino &&
+ no_formal_ino != ip->i_no_formal_ino) {
+ error = -ESTALE;
+ if (inode->i_state & I_NEW)
+ goto fail;
+ iput(inode);
+ return ERR_PTR(error);
+ }
+
+ if (inode->i_state & I_NEW)
+ unlock_new_inode(inode);
+
return inode;
-fail_refresh:
- ip->i_iopen_gh.gh_flags |= GL_NOCACHE;
- glock_clear_object(ip->i_iopen_gh.gh_gl, ip);
- gfs2_glock_dq_uninit(&ip->i_iopen_gh);
-fail_put:
+fail:
if (io_gl)
gfs2_glock_put(io_gl);
- glock_clear_object(ip->i_gl, ip);
if (gfs2_holder_initialized(&i_gh))
gfs2_glock_dq_uninit(&i_gh);
-fail:
iget_failed(inode);
return ERR_PTR(error);
}
+/**
+ * gfs2_lookup_by_inum - look up an inode by inode number
+ * @sdp: The super block
+ * @no_addr: The inode number
+ * @no_formal_ino: The inode generation number (0 for any)
+ * @blktype: Requested block type (see gfs2_inode_lookup)
+ */
struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
- u64 *no_formal_ino, unsigned int blktype)
+ u64 no_formal_ino, unsigned int blktype)
{
struct super_block *sb = sdp->sd_vfs;
struct inode *inode;
int error;
- inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, 0, blktype);
+ inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, no_formal_ino,
+ blktype);
if (IS_ERR(inode))
return inode;
- /* Two extra checks for NFS only */
if (no_formal_ino) {
- error = -ESTALE;
- if (GFS2_I(inode)->i_no_formal_ino != *no_formal_ino)
- goto fail_iput;
-
error = -EIO;
if (GFS2_I(inode)->i_diskflags & GFS2_DIF_SYSTEM)
goto fail_iput;
@@ -597,13 +614,13 @@
if (!name->len || name->len > GFS2_FNAMESIZE)
return -ENAMETOOLONG;
- error = gfs2_rsqa_alloc(dip);
+ error = gfs2_qa_get(dip);
if (error)
return error;
error = gfs2_rindex_update(sdp);
if (error)
- return error;
+ goto fail;
error = gfs2_glock_nq_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
if (error)
@@ -631,7 +648,7 @@
error = finish_no_open(file, NULL);
}
gfs2_glock_dq_uninit(ghs);
- return error;
+ goto fail;
} else if (error != -ENOENT) {
goto fail_gunlock;
}
@@ -650,7 +667,7 @@
goto fail_gunlock;
ip = GFS2_I(inode);
- error = gfs2_rsqa_alloc(ip);
+ error = gfs2_qa_get(ip);
if (error)
goto fail_free_acls;
@@ -659,7 +676,6 @@
inode->i_rdev = dev;
inode->i_size = size;
inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
- gfs2_set_inode_blocks(inode, 1);
munge_mode_uid_gid(dip, inode);
check_and_update_goal(dip);
ip->i_goal = dip->i_goal;
@@ -709,13 +725,19 @@
flush_delayed_work(&ip->i_gl->gl_work);
glock_set_object(ip->i_gl, ip);
- error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1);
+ error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
if (error)
goto fail_free_inode;
+ gfs2_cancel_delete_work(io_gl);
+ glock_set_object(io_gl, ip);
+
+ error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1);
+ if (error)
+ goto fail_gunlock2;
error = gfs2_trans_begin(sdp, blocks, 0);
if (error)
- goto fail_free_inode;
+ goto fail_gunlock2;
if (blocks > 1) {
ip->i_eattr = ip->i_no_addr + 1;
@@ -724,17 +746,12 @@
init_dinode(dip, ip, symname);
gfs2_trans_end(sdp);
- error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
- if (error)
- goto fail_free_inode;
-
BUG_ON(test_and_set_bit(GLF_INODE_CREATING, &io_gl->gl_flags));
error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
if (error)
goto fail_gunlock2;
- glock_set_object(ip->i_iopen_gh.gh_gl, ip);
gfs2_set_iop(inode);
insert_inode_hash(inode);
@@ -774,9 +791,11 @@
error = finish_open(file, dentry, gfs2_open_common);
}
gfs2_glock_dq_uninit(ghs);
+ gfs2_qa_put(ip);
gfs2_glock_dq_uninit(ghs + 1);
clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags);
gfs2_glock_put(io_gl);
+ gfs2_qa_put(dip);
return error;
fail_gunlock3:
@@ -784,20 +803,23 @@
gfs2_glock_dq_uninit(&ip->i_iopen_gh);
fail_gunlock2:
clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags);
+ glock_clear_object(io_gl, ip);
gfs2_glock_put(io_gl);
fail_free_inode:
if (ip->i_gl) {
glock_clear_object(ip->i_gl, ip);
- gfs2_glock_put(ip->i_gl);
+ if (free_vfs_inode) /* else evict will do the put for us */
+ gfs2_glock_put(ip->i_gl);
}
- gfs2_rsqa_delete(ip, NULL);
+ gfs2_rs_deltree(&ip->i_res);
+ gfs2_qa_put(ip);
fail_free_acls:
posix_acl_release(default_acl);
posix_acl_release(acl);
fail_gunlock:
gfs2_dir_no_add(&da);
gfs2_glock_dq_uninit(ghs);
- if (inode && !IS_ERR(inode)) {
+ if (!IS_ERR_OR_NULL(inode)) {
clear_nlink(inode);
if (!free_vfs_inode)
mark_inode_dirty(inode);
@@ -808,6 +830,7 @@
if (gfs2_holder_initialized(ghs + 1))
gfs2_glock_dq_uninit(ghs + 1);
fail:
+ gfs2_qa_put(dip);
return error;
}
@@ -909,7 +932,7 @@
if (S_ISDIR(inode->i_mode))
return -EPERM;
- error = gfs2_rsqa_alloc(dip);
+ error = gfs2_qa_get(dip);
if (error)
return error;
@@ -1012,6 +1035,7 @@
out_child:
gfs2_glock_dq(ghs);
out_parent:
+ gfs2_qa_put(dip);
gfs2_holder_uninit(ghs);
gfs2_holder_uninit(ghs + 1);
return error;
@@ -1352,7 +1376,7 @@
struct gfs2_inode *ip = GFS2_I(d_inode(odentry));
struct gfs2_inode *nip = NULL;
struct gfs2_sbd *sdp = GFS2_SB(odir);
- struct gfs2_holder ghs[5], r_gh;
+ struct gfs2_holder ghs[4], r_gh, rd_gh;
struct gfs2_rgrpd *nrgd;
unsigned int num_gh;
int dir_rename = 0;
@@ -1361,6 +1385,7 @@
int error;
gfs2_holder_mark_uninitialized(&r_gh);
+ gfs2_holder_mark_uninitialized(&rd_gh);
if (d_really_is_positive(ndentry)) {
nip = GFS2_I(d_inode(ndentry));
if (ip == nip)
@@ -1371,7 +1396,7 @@
if (error)
return error;
- error = gfs2_rsqa_alloc(ndip);
+ error = gfs2_qa_get(ndip);
if (error)
return error;
@@ -1391,28 +1416,42 @@
}
num_gh = 1;
- gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
+ gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs);
if (odip != ndip) {
- gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
+ gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE,GL_ASYNC,
+ ghs + num_gh);
num_gh++;
}
- gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
+ gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs + num_gh);
num_gh++;
if (nip) {
- gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
+ gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC,
+ ghs + num_gh);
num_gh++;
- /* grab the resource lock for unlink flag twiddling
- * this is the case of the target file already existing
- * so we unlink before doing the rename
- */
- nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr, 1);
- if (nrgd)
- gfs2_holder_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
}
for (x = 0; x < num_gh; x++) {
error = gfs2_glock_nq(ghs + x);
+ if (error)
+ goto out_gunlock;
+ }
+ error = gfs2_glock_async_wait(num_gh, ghs);
+ if (error)
+ goto out_gunlock;
+
+ if (nip) {
+ /* Grab the resource group glock for unlink flag twiddling.
+ * This is the case where the target dinode already exists
+ * so we unlink before doing the rename.
+ */
+ nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr, 1);
+ if (!nrgd) {
+ error = -ENOENT;
+ goto out_gunlock;
+ }
+ error = gfs2_glock_nq_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0,
+ &rd_gh);
if (error)
goto out_gunlock;
}
@@ -1464,7 +1503,7 @@
error = -EEXIST;
default:
goto out_gunlock;
- };
+ }
if (odip != ndip) {
if (!ndip->i_inode.i_nlink) {
@@ -1545,14 +1584,19 @@
gfs2_quota_unlock(ndip);
out_gunlock:
gfs2_dir_no_add(&da);
+ if (gfs2_holder_initialized(&rd_gh))
+ gfs2_glock_dq_uninit(&rd_gh);
+
while (x--) {
- gfs2_glock_dq(ghs + x);
+ if (gfs2_holder_queued(ghs + x))
+ gfs2_glock_dq(ghs + x);
gfs2_holder_uninit(ghs + x);
}
out_gunlock_r:
if (gfs2_holder_initialized(&r_gh))
gfs2_glock_dq_uninit(&r_gh);
out:
+ gfs2_qa_put(ndip);
return error;
}
@@ -1576,7 +1620,7 @@
struct gfs2_inode *oip = GFS2_I(odentry->d_inode);
struct gfs2_inode *nip = GFS2_I(ndentry->d_inode);
struct gfs2_sbd *sdp = GFS2_SB(odir);
- struct gfs2_holder ghs[5], r_gh;
+ struct gfs2_holder ghs[4], r_gh;
unsigned int num_gh;
unsigned int x;
umode_t old_mode = oip->i_inode.i_mode;
@@ -1610,15 +1654,16 @@
}
num_gh = 1;
- gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
+ gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs);
if (odip != ndip) {
- gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
+ gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC,
+ ghs + num_gh);
num_gh++;
}
- gfs2_holder_init(oip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
+ gfs2_holder_init(oip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs + num_gh);
num_gh++;
- gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
+ gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs + num_gh);
num_gh++;
for (x = 0; x < num_gh; x++) {
@@ -1626,6 +1671,10 @@
if (error)
goto out_gunlock;
}
+
+ error = gfs2_glock_async_wait(num_gh, ghs);
+ if (error)
+ goto out_gunlock;
error = -ENOENT;
if (oip->i_inode.i_nlink == 0 || nip->i_inode.i_nlink == 0)
@@ -1687,7 +1736,8 @@
gfs2_trans_end(sdp);
out_gunlock:
while (x--) {
- gfs2_glock_dq(ghs + x);
+ if (gfs2_holder_queued(ghs + x))
+ gfs2_glock_dq(ghs + x);
gfs2_holder_uninit(ghs + x);
}
out_gunlock_r:
@@ -1858,10 +1908,9 @@
ouid = nuid = NO_UID_QUOTA_CHANGE;
if (!(attr->ia_valid & ATTR_GID) || gid_eq(ogid, ngid))
ogid = ngid = NO_GID_QUOTA_CHANGE;
-
- error = gfs2_rsqa_alloc(ip);
+ error = gfs2_qa_get(ip);
if (error)
- goto out;
+ return error;
error = gfs2_rindex_update(sdp);
if (error)
@@ -1899,6 +1948,7 @@
out_gunlock_q:
gfs2_quota_unlock(ip);
out:
+ gfs2_qa_put(ip);
return error;
}
@@ -1920,21 +1970,21 @@
struct gfs2_holder i_gh;
int error;
- error = gfs2_rsqa_alloc(ip);
+ error = gfs2_qa_get(ip);
if (error)
return error;
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
if (error)
- return error;
+ goto out;
error = -EPERM;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
- goto out;
+ goto error;
error = setattr_prepare(dentry, attr);
if (error)
- goto out;
+ goto error;
if (attr->ia_valid & ATTR_SIZE)
error = gfs2_setattr_size(inode, attr->ia_size);
@@ -1946,10 +1996,12 @@
error = posix_acl_chmod(inode, inode->i_mode);
}
-out:
+error:
if (!error)
mark_inode_dirty(inode);
gfs2_glock_dq_uninit(&i_gh);
+out:
+ gfs2_qa_put(ip);
return error;
}
@@ -2065,6 +2117,25 @@
return vfs_setpos(file, ret, inode->i_sb->s_maxbytes);
}
+static int gfs2_update_time(struct inode *inode, struct timespec64 *time,
+ int flags)
+{
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct gfs2_glock *gl = ip->i_gl;
+ struct gfs2_holder *gh;
+ int error;
+
+ gh = gfs2_glock_is_locked_by_me(gl);
+ if (gh && !gfs2_glock_is_held_excl(gl)) {
+ gfs2_glock_dq(gh);
+ gfs2_holder_reinit(LM_ST_EXCLUSIVE, 0, gh);
+ error = gfs2_glock_nq(gh);
+ if (error)
+ return error;
+ }
+ return generic_update_time(inode, time, flags);
+}
+
const struct inode_operations gfs2_file_iops = {
.permission = gfs2_permission,
.setattr = gfs2_setattr,
@@ -2073,6 +2144,7 @@
.fiemap = gfs2_fiemap,
.get_acl = gfs2_get_acl,
.set_acl = gfs2_set_acl,
+ .update_time = gfs2_update_time,
};
const struct inode_operations gfs2_dir_iops = {
@@ -2092,6 +2164,7 @@
.fiemap = gfs2_fiemap,
.get_acl = gfs2_get_acl,
.set_acl = gfs2_set_acl,
+ .update_time = gfs2_update_time,
.atomic_open = gfs2_atomic_open,
};
--
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