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-rw-r--r--fs/ubifs/Kconfig2
-rw-r--r--fs/ubifs/budget.c2
-rw-r--r--fs/ubifs/commit.c2
-rw-r--r--fs/ubifs/debug.c63
-rw-r--r--fs/ubifs/lpt.c7
-rw-r--r--fs/ubifs/super.c3
-rw-r--r--fs/ubifs/xattr.c4
7 files changed, 56 insertions, 27 deletions
diff --git a/fs/ubifs/Kconfig b/fs/ubifs/Kconfig
index d7440904be17..f8b0160da2da 100644
--- a/fs/ubifs/Kconfig
+++ b/fs/ubifs/Kconfig
@@ -47,7 +47,7 @@ config UBIFS_FS_DEBUG
bool "Enable debugging support"
depends on UBIFS_FS
select DEBUG_FS
- select KALLSYMS_ALL
+ select KALLSYMS
help
This option enables UBIFS debugging support. It makes sure various
assertions, self-checks, debugging messages and test modes are compiled
diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c
index c8ff0d1ae5d3..8b3a7da531eb 100644
--- a/fs/ubifs/budget.c
+++ b/fs/ubifs/budget.c
@@ -147,7 +147,7 @@ static int make_free_space(struct ubifs_info *c)
if (liab2 < liab1)
return -EAGAIN;
- dbg_budg("new liability %lld (not shrinked)", liab2);
+ dbg_budg("new liability %lld (not shrunk)", liab2);
/* Liability did not shrink again, try GC */
dbg_budg("Run GC");
diff --git a/fs/ubifs/commit.c b/fs/ubifs/commit.c
index b148fbc80f8d..1bd01ded7123 100644
--- a/fs/ubifs/commit.c
+++ b/fs/ubifs/commit.c
@@ -577,7 +577,7 @@ int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot)
size_t sz;
if (!(ubifs_chk_flags & UBIFS_CHK_OLD_IDX))
- goto out;
+ return 0;
INIT_LIST_HEAD(&list);
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index f25a7339f800..004d3745dc45 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -972,11 +972,39 @@ void dbg_dump_index(struct ubifs_info *c)
void dbg_save_space_info(struct ubifs_info *c)
{
struct ubifs_debug_info *d = c->dbg;
-
- ubifs_get_lp_stats(c, &d->saved_lst);
+ int freeable_cnt;
spin_lock(&c->space_lock);
+ memcpy(&d->saved_lst, &c->lst, sizeof(struct ubifs_lp_stats));
+
+ /*
+ * We use a dirty hack here and zero out @c->freeable_cnt, because it
+ * affects the free space calculations, and UBIFS might not know about
+ * all freeable eraseblocks. Indeed, we know about freeable eraseblocks
+ * only when we read their lprops, and we do this only lazily, upon the
+ * need. So at any given point of time @c->freeable_cnt might be not
+ * exactly accurate.
+ *
+ * Just one example about the issue we hit when we did not zero
+ * @c->freeable_cnt.
+ * 1. The file-system is mounted R/O, c->freeable_cnt is %0. We save the
+ * amount of free space in @d->saved_free
+ * 2. We re-mount R/W, which makes UBIFS to read the "lsave"
+ * information from flash, where we cache LEBs from various
+ * categories ('ubifs_remount_fs()' -> 'ubifs_lpt_init()'
+ * -> 'lpt_init_wr()' -> 'read_lsave()' -> 'ubifs_lpt_lookup()'
+ * -> 'ubifs_get_pnode()' -> 'update_cats()'
+ * -> 'ubifs_add_to_cat()').
+ * 3. Lsave contains a freeable eraseblock, and @c->freeable_cnt
+ * becomes %1.
+ * 4. We calculate the amount of free space when the re-mount is
+ * finished in 'dbg_check_space_info()' and it does not match
+ * @d->saved_free.
+ */
+ freeable_cnt = c->freeable_cnt;
+ c->freeable_cnt = 0;
d->saved_free = ubifs_get_free_space_nolock(c);
+ c->freeable_cnt = freeable_cnt;
spin_unlock(&c->space_lock);
}
@@ -993,12 +1021,15 @@ int dbg_check_space_info(struct ubifs_info *c)
{
struct ubifs_debug_info *d = c->dbg;
struct ubifs_lp_stats lst;
- long long avail, free;
+ long long free;
+ int freeable_cnt;
spin_lock(&c->space_lock);
- avail = ubifs_calc_available(c, c->min_idx_lebs);
+ freeable_cnt = c->freeable_cnt;
+ c->freeable_cnt = 0;
+ free = ubifs_get_free_space_nolock(c);
+ c->freeable_cnt = freeable_cnt;
spin_unlock(&c->space_lock);
- free = ubifs_get_free_space(c);
if (free != d->saved_free) {
ubifs_err("free space changed from %lld to %lld",
@@ -2806,40 +2837,38 @@ int dbg_debugfs_init_fs(struct ubifs_info *c)
struct ubifs_debug_info *d = c->dbg;
sprintf(d->dfs_dir_name, "ubi%d_%d", c->vi.ubi_num, c->vi.vol_id);
- d->dfs_dir = debugfs_create_dir(d->dfs_dir_name, dfs_rootdir);
- if (IS_ERR(d->dfs_dir)) {
- err = PTR_ERR(d->dfs_dir);
- ubifs_err("cannot create \"%s\" debugfs directory, error %d\n",
- d->dfs_dir_name, err);
+ fname = d->dfs_dir_name;
+ dent = debugfs_create_dir(fname, dfs_rootdir);
+ if (IS_ERR_OR_NULL(dent))
goto out;
- }
+ d->dfs_dir = dent;
fname = "dump_lprops";
dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c, &dfs_fops);
- if (IS_ERR(dent))
+ if (IS_ERR_OR_NULL(dent))
goto out_remove;
d->dfs_dump_lprops = dent;
fname = "dump_budg";
dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c, &dfs_fops);
- if (IS_ERR(dent))
+ if (IS_ERR_OR_NULL(dent))
goto out_remove;
d->dfs_dump_budg = dent;
fname = "dump_tnc";
dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c, &dfs_fops);
- if (IS_ERR(dent))
+ if (IS_ERR_OR_NULL(dent))
goto out_remove;
d->dfs_dump_tnc = dent;
return 0;
out_remove:
- err = PTR_ERR(dent);
- ubifs_err("cannot create \"%s\" debugfs directory, error %d\n",
- fname, err);
debugfs_remove_recursive(d->dfs_dir);
out:
+ err = dent ? PTR_ERR(dent) : -ENODEV;
+ ubifs_err("cannot create \"%s\" debugfs directory, error %d\n",
+ fname, err);
return err;
}
diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
index 72775d35b99e..ef5155e109a2 100644
--- a/fs/ubifs/lpt.c
+++ b/fs/ubifs/lpt.c
@@ -1270,10 +1270,9 @@ static int read_pnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip)
lnum = branch->lnum;
offs = branch->offs;
pnode = kzalloc(sizeof(struct ubifs_pnode), GFP_NOFS);
- if (!pnode) {
- err = -ENOMEM;
- goto out;
- }
+ if (!pnode)
+ return -ENOMEM;
+
if (lnum == 0) {
/*
* This pnode was not written which just means that the LEB
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 6ddd9973e681..c75f6133206c 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1568,6 +1568,7 @@ static int ubifs_remount_rw(struct ubifs_info *c)
mutex_lock(&c->umount_mutex);
dbg_save_space_info(c);
c->remounting_rw = 1;
+ c->ro_mount = 0;
err = check_free_space(c);
if (err)
@@ -1676,13 +1677,13 @@ static int ubifs_remount_rw(struct ubifs_info *c)
}
dbg_gen("re-mounted read-write");
- c->ro_mount = 0;
c->remounting_rw = 0;
err = dbg_check_space_info(c);
mutex_unlock(&c->umount_mutex);
return err;
out:
+ c->ro_mount = 1;
vfree(c->orph_buf);
c->orph_buf = NULL;
if (c->bgt) {
diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index c74400f88fe0..3299f469e712 100644
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -56,6 +56,7 @@
*/
#include "ubifs.h"
+#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/xattr.h>
#include <linux/posix_acl_xattr.h>
@@ -80,7 +81,6 @@ enum {
};
static const struct inode_operations none_inode_operations;
-static const struct address_space_operations none_address_operations;
static const struct file_operations none_file_operations;
/**
@@ -130,7 +130,7 @@ static int create_xattr(struct ubifs_info *c, struct inode *host,
}
/* Re-define all operations to be "nothing" */
- inode->i_mapping->a_ops = &none_address_operations;
+ inode->i_mapping->a_ops = &empty_aops;
inode->i_op = &none_inode_operations;
inode->i_fop = &none_file_operations;
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-11-06 07:04:35 +0100