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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-12 12:24:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-12 12:24:03 -0700
commitf632a8170a6b667ee4e3f552087588f0fe13c4bb (patch)
tree9fbdd3505f1471364265727dea1bc9d034cbed8f /fs/ubifs
parentef8f3d48afd6a17a0dae8c277c2f539c2f19fd16 (diff)
parentc33d442328f556460b79aba6058adb37bb555389 (diff)
Merge tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core and debugfs updates from Greg KH: "Here is the "big" driver core and debugfs changes for 5.3-rc1 It's a lot of different patches, all across the tree due to some api changes and lots of debugfs cleanups. Other than the debugfs cleanups, in this set of changes we have: - bus iteration function cleanups - scripts/get_abi.pl tool to display and parse Documentation/ABI entries in a simple way - cleanups to Documenatation/ABI/ entries to make them parse easier due to typos and other minor things - default_attrs use for some ktype users - driver model documentation file conversions to .rst - compressed firmware file loading - deferred probe fixes All of these have been in linux-next for a while, with a bunch of merge issues that Stephen has been patient with me for" * tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (102 commits) debugfs: make error message a bit more verbose orangefs: fix build warning from debugfs cleanup patch ubifs: fix build warning after debugfs cleanup patch driver: core: Allow subsystems to continue deferring probe drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT arch_topology: Remove error messages on out-of-memory conditions lib: notifier-error-inject: no need to check return value of debugfs_create functions swiotlb: no need to check return value of debugfs_create functions ceph: no need to check return value of debugfs_create functions sunrpc: no need to check return value of debugfs_create functions ubifs: no need to check return value of debugfs_create functions orangefs: no need to check return value of debugfs_create functions nfsd: no need to check return value of debugfs_create functions lib: 842: no need to check return value of debugfs_create functions debugfs: provide pr_fmt() macro debugfs: log errors when something goes wrong drivers: s390/cio: Fix compilation warning about const qualifiers drivers: Add generic helper to match by of_node driver_find_device: Unify the match function with class_find_device() bus_find_device: Unify the match callback with class_find_device ...
Diffstat (limited to 'fs/ubifs')
-rw-r--r--fs/ubifs/debug.c169
-rw-r--r--fs/ubifs/debug.h4
-rw-r--r--fs/ubifs/super.c9
3 files changed, 46 insertions, 136 deletions
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 138c5b07d803..a5f10d79e0dd 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -2800,115 +2800,69 @@ static const struct file_operations dfs_fops = {
* dbg_debugfs_init_fs - initialize debugfs for UBIFS instance.
* @c: UBIFS file-system description object
*
- * This function creates all debugfs files for this instance of UBIFS. Returns
- * zero in case of success and a negative error code in case of failure.
+ * This function creates all debugfs files for this instance of UBIFS.
*
* Note, the only reason we have not merged this function with the
* 'ubifs_debugging_init()' function is because it is better to initialize
* debugfs interfaces at the very end of the mount process, and remove them at
* the very beginning of the mount process.
*/
-int dbg_debugfs_init_fs(struct ubifs_info *c)
+void dbg_debugfs_init_fs(struct ubifs_info *c)
{
- int err, n;
+ int n;
const char *fname;
- struct dentry *dent;
struct ubifs_debug_info *d = c->dbg;
- if (!IS_ENABLED(CONFIG_DEBUG_FS))
- return 0;
-
n = snprintf(d->dfs_dir_name, UBIFS_DFS_DIR_LEN + 1, UBIFS_DFS_DIR_NAME,
c->vi.ubi_num, c->vi.vol_id);
if (n == UBIFS_DFS_DIR_LEN) {
/* The array size is too small */
fname = UBIFS_DFS_DIR_NAME;
- dent = ERR_PTR(-EINVAL);
- goto out;
+ return;
}
fname = d->dfs_dir_name;
- dent = debugfs_create_dir(fname, dfs_rootdir);
- if (IS_ERR_OR_NULL(dent))
- goto out;
- d->dfs_dir = dent;
+ d->dfs_dir = debugfs_create_dir(fname, dfs_rootdir);
fname = "dump_lprops";
- dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c, &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_dump_lprops = dent;
+ d->dfs_dump_lprops = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c,
+ &dfs_fops);
fname = "dump_budg";
- dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c, &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_dump_budg = dent;
+ d->dfs_dump_budg = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c,
+ &dfs_fops);
fname = "dump_tnc";
- dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c, &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_dump_tnc = dent;
+ d->dfs_dump_tnc = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c,
+ &dfs_fops);
fname = "chk_general";
- dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, d->dfs_dir, c,
- &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_chk_gen = dent;
+ d->dfs_chk_gen = debugfs_create_file(fname, S_IRUSR | S_IWUSR,
+ d->dfs_dir, c, &dfs_fops);
fname = "chk_index";
- dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, d->dfs_dir, c,
- &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_chk_index = dent;
+ d->dfs_chk_index = debugfs_create_file(fname, S_IRUSR | S_IWUSR,
+ d->dfs_dir, c, &dfs_fops);
fname = "chk_orphans";
- dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, d->dfs_dir, c,
- &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_chk_orph = dent;
+ d->dfs_chk_orph = debugfs_create_file(fname, S_IRUSR | S_IWUSR,
+ d->dfs_dir, c, &dfs_fops);
fname = "chk_lprops";
- dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, d->dfs_dir, c,
- &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_chk_lprops = dent;
+ d->dfs_chk_lprops = debugfs_create_file(fname, S_IRUSR | S_IWUSR,
+ d->dfs_dir, c, &dfs_fops);
fname = "chk_fs";
- dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, d->dfs_dir, c,
- &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_chk_fs = dent;
+ d->dfs_chk_fs = debugfs_create_file(fname, S_IRUSR | S_IWUSR,
+ d->dfs_dir, c, &dfs_fops);
fname = "tst_recovery";
- dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, d->dfs_dir, c,
- &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_tst_rcvry = dent;
+ d->dfs_tst_rcvry = debugfs_create_file(fname, S_IRUSR | S_IWUSR,
+ d->dfs_dir, c, &dfs_fops);
fname = "ro_error";
- dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, d->dfs_dir, c,
- &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_ro_error = dent;
-
- return 0;
-
-out_remove:
- debugfs_remove_recursive(d->dfs_dir);
-out:
- err = dent ? PTR_ERR(dent) : -ENODEV;
- ubifs_err(c, "cannot create \"%s\" debugfs file or directory, error %d\n",
- fname, err);
- return err;
+ d->dfs_ro_error = debugfs_create_file(fname, S_IRUSR | S_IWUSR,
+ d->dfs_dir, c, &dfs_fops);
}
/**
@@ -2917,8 +2871,7 @@ out:
*/
void dbg_debugfs_exit_fs(struct ubifs_info *c)
{
- if (IS_ENABLED(CONFIG_DEBUG_FS))
- debugfs_remove_recursive(c->dbg->dfs_dir);
+ debugfs_remove_recursive(c->dbg->dfs_dir);
}
struct ubifs_global_debug_info ubifs_dbg;
@@ -2994,75 +2947,38 @@ static const struct file_operations dfs_global_fops = {
*
* UBIFS uses debugfs file-system to expose various debugging knobs to
* user-space. This function creates "ubifs" directory in the debugfs
- * file-system. Returns zero in case of success and a negative error code in
- * case of failure.
+ * file-system.
*/
-int dbg_debugfs_init(void)
+void dbg_debugfs_init(void)
{
- int err;
const char *fname;
- struct dentry *dent;
-
- if (!IS_ENABLED(CONFIG_DEBUG_FS))
- return 0;
fname = "ubifs";
- dent = debugfs_create_dir(fname, NULL);
- if (IS_ERR_OR_NULL(dent))
- goto out;
- dfs_rootdir = dent;
+ dfs_rootdir = debugfs_create_dir(fname, NULL);
fname = "chk_general";
- dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir, NULL,
- &dfs_global_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- dfs_chk_gen = dent;
+ dfs_chk_gen = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir,
+ NULL, &dfs_global_fops);
fname = "chk_index";
- dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir, NULL,
- &dfs_global_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- dfs_chk_index = dent;
+ dfs_chk_index = debugfs_create_file(fname, S_IRUSR | S_IWUSR,
+ dfs_rootdir, NULL, &dfs_global_fops);
fname = "chk_orphans";
- dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir, NULL,
- &dfs_global_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- dfs_chk_orph = dent;
+ dfs_chk_orph = debugfs_create_file(fname, S_IRUSR | S_IWUSR,
+ dfs_rootdir, NULL, &dfs_global_fops);
fname = "chk_lprops";
- dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir, NULL,
- &dfs_global_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- dfs_chk_lprops = dent;
+ dfs_chk_lprops = debugfs_create_file(fname, S_IRUSR | S_IWUSR,
+ dfs_rootdir, NULL, &dfs_global_fops);
fname = "chk_fs";
- dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir, NULL,
- &dfs_global_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- dfs_chk_fs = dent;
+ dfs_chk_fs = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir,
+ NULL, &dfs_global_fops);
fname = "tst_recovery";
- dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir, NULL,
- &dfs_global_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- dfs_tst_rcvry = dent;
-
- return 0;
-
-out_remove:
- debugfs_remove_recursive(dfs_rootdir);
-out:
- err = dent ? PTR_ERR(dent) : -ENODEV;
- pr_err("UBIFS error (pid %d): cannot create \"%s\" debugfs file or directory, error %d\n",
- current->pid, fname, err);
- return err;
+ dfs_tst_rcvry = debugfs_create_file(fname, S_IRUSR | S_IWUSR,
+ dfs_rootdir, NULL, &dfs_global_fops);
}
/**
@@ -3070,8 +2986,7 @@ out:
*/
void dbg_debugfs_exit(void)
{
- if (IS_ENABLED(CONFIG_DEBUG_FS))
- debugfs_remove_recursive(dfs_rootdir);
+ debugfs_remove_recursive(dfs_rootdir);
}
void ubifs_assert_failed(struct ubifs_info *c, const char *expr,
diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h
index eb26097b6f70..7763639a426b 100644
--- a/fs/ubifs/debug.h
+++ b/fs/ubifs/debug.h
@@ -297,9 +297,9 @@ int dbg_leb_unmap(struct ubifs_info *c, int lnum);
int dbg_leb_map(struct ubifs_info *c, int lnum);
/* Debugfs-related stuff */
-int dbg_debugfs_init(void);
+void dbg_debugfs_init(void);
void dbg_debugfs_exit(void);
-int dbg_debugfs_init_fs(struct ubifs_info *c);
+void dbg_debugfs_init_fs(struct ubifs_info *c);
void dbg_debugfs_exit_fs(struct ubifs_info *c);
#endif /* !__UBIFS_DEBUG_H__ */
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 6cfc494050be..fd1977b568f0 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1465,9 +1465,7 @@ static int mount_ubifs(struct ubifs_info *c)
if (err)
goto out_infos;
- err = dbg_debugfs_init_fs(c);
- if (err)
- goto out_infos;
+ dbg_debugfs_init_fs(c);
c->mounting = 0;
@@ -2352,9 +2350,7 @@ static int __init ubifs_init(void)
if (err)
goto out_shrinker;
- err = dbg_debugfs_init();
- if (err)
- goto out_compr;
+ dbg_debugfs_init();
err = register_filesystem(&ubifs_fs_type);
if (err) {
@@ -2366,7 +2362,6 @@ static int __init ubifs_init(void)
out_dbg:
dbg_debugfs_exit();
-out_compr:
ubifs_compressors_exit();
out_shrinker:
unregister_shrinker(&ubifs_shrinker_info);