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-rw-r--r--fs/autofs4/autofs_i.h1
-rw-r--r--fs/autofs4/inode.c1
-rw-r--r--fs/autofs4/waitq.c40
-rw-r--r--fs/block_dev.c10
-rw-r--r--fs/coda/cnode.c38
-rw-r--r--fs/coda/coda_fs_i.h4
-rw-r--r--fs/coda/dir.c29
-rw-r--r--fs/coda/inode.c10
-rw-r--r--fs/dcache.c15
-rw-r--r--fs/hfsplus/super.c11
10 files changed, 86 insertions, 73 deletions
diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index 5869d4e974a..d8d8e7ba6a1 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -116,6 +116,7 @@ struct autofs_sb_info {
int needs_reghost;
struct super_block *sb;
struct mutex wq_mutex;
+ struct mutex pipe_mutex;
spinlock_t fs_lock;
struct autofs_wait_queue *queues; /* Wait queue pointer */
spinlock_t lookup_lock;
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index 2ba44c79d54..e16980b00b8 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -225,6 +225,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
sbi->min_proto = 0;
sbi->max_proto = 0;
mutex_init(&sbi->wq_mutex);
+ mutex_init(&sbi->pipe_mutex);
spin_lock_init(&sbi->fs_lock);
sbi->queues = NULL;
spin_lock_init(&sbi->lookup_lock);
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index e1fbdeef85d..9ef5b291440 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -56,26 +56,27 @@ void autofs4_catatonic_mode(struct autofs_sb_info *sbi)
mutex_unlock(&sbi->wq_mutex);
}
-static int autofs4_write(struct file *file, const void *addr, int bytes)
+static int autofs4_write(struct autofs_sb_info *sbi,
+ struct file *file, const void *addr, int bytes)
{
unsigned long sigpipe, flags;
mm_segment_t fs;
const char *data = (const char *)addr;
ssize_t wr = 0;
- /** WARNING: this is not safe for writing more than PIPE_BUF bytes! **/
-
sigpipe = sigismember(&current->pending.signal, SIGPIPE);
/* Save pointer to user space and point back to kernel space */
fs = get_fs();
set_fs(KERNEL_DS);
+ mutex_lock(&sbi->pipe_mutex);
while (bytes &&
(wr = file->f_op->write(file,data,bytes,&file->f_pos)) > 0) {
data += wr;
bytes -= wr;
}
+ mutex_lock(&sbi->pipe_mutex);
set_fs(fs);
@@ -110,6 +111,13 @@ static void autofs4_notify_daemon(struct autofs_sb_info *sbi,
pkt.hdr.proto_version = sbi->version;
pkt.hdr.type = type;
+ mutex_lock(&sbi->wq_mutex);
+
+ /* Check if we have become catatonic */
+ if (sbi->catatonic) {
+ mutex_unlock(&sbi->wq_mutex);
+ return;
+ }
switch (type) {
/* Kernel protocol v4 missing and expire packets */
case autofs_ptype_missing:
@@ -163,22 +171,18 @@ static void autofs4_notify_daemon(struct autofs_sb_info *sbi,
}
default:
printk("autofs4_notify_daemon: bad type %d!\n", type);
+ mutex_unlock(&sbi->wq_mutex);
return;
}
- /* Check if we have become catatonic */
- mutex_lock(&sbi->wq_mutex);
- if (!sbi->catatonic) {
- pipe = sbi->pipe;
- get_file(pipe);
- }
+ pipe = sbi->pipe;
+ get_file(pipe);
+
mutex_unlock(&sbi->wq_mutex);
- if (pipe) {
- if (autofs4_write(pipe, &pkt, pktsz))
- autofs4_catatonic_mode(sbi);
- fput(pipe);
- }
+ if (autofs4_write(sbi, pipe, &pkt, pktsz))
+ autofs4_catatonic_mode(sbi);
+ fput(pipe);
}
static int autofs4_getpath(struct autofs_sb_info *sbi,
@@ -257,6 +261,9 @@ static int validate_request(struct autofs_wait_queue **wait,
struct autofs_wait_queue *wq;
struct autofs_info *ino;
+ if (sbi->catatonic)
+ return -ENOENT;
+
/* Wait in progress, continue; */
wq = autofs4_find_wait(sbi, qstr);
if (wq) {
@@ -289,6 +296,9 @@ static int validate_request(struct autofs_wait_queue **wait,
if (mutex_lock_interruptible(&sbi->wq_mutex))
return -EINTR;
+ if (sbi->catatonic)
+ return -ENOENT;
+
wq = autofs4_find_wait(sbi, qstr);
if (wq) {
*wait = wq;
@@ -389,7 +399,7 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
ret = validate_request(&wq, sbi, &qstr, dentry, notify);
if (ret <= 0) {
- if (ret == 0)
+ if (ret != -EINTR)
mutex_unlock(&sbi->wq_mutex);
kfree(qstr.name);
return ret;
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 69a5b6fbee2..afe74dda632 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -25,7 +25,6 @@
#include <linux/uio.h>
#include <linux/namei.h>
#include <linux/log2.h>
-#include <linux/kmemleak.h>
#include <linux/cleancache.h>
#include <asm/uaccess.h>
#include "internal.h"
@@ -521,7 +520,7 @@ static struct super_block *blockdev_superblock __read_mostly;
void __init bdev_cache_init(void)
{
int err;
- struct vfsmount *bd_mnt;
+ static struct vfsmount *bd_mnt;
bdev_cachep = kmem_cache_create("bdev_cache", sizeof(struct bdev_inode),
0, (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
@@ -533,12 +532,7 @@ void __init bdev_cache_init(void)
bd_mnt = kern_mount(&bd_type);
if (IS_ERR(bd_mnt))
panic("Cannot create bdev pseudo-fs");
- /*
- * This vfsmount structure is only used to obtain the
- * blockdev_superblock, so tell kmemleak not to report it.
- */
- kmemleak_not_leak(bd_mnt);
- blockdev_superblock = bd_mnt->mnt_sb; /* For writeback */
+ blockdev_superblock = bd_mnt->mnt_sb; /* For writeback */
}
/*
diff --git a/fs/coda/cnode.c b/fs/coda/cnode.c
index 6475877b076..911cf30d057 100644
--- a/fs/coda/cnode.c
+++ b/fs/coda/cnode.c
@@ -88,24 +88,21 @@ struct inode * coda_iget(struct super_block * sb, struct CodaFid * fid,
- link the two up if this is needed
- fill in the attributes
*/
-int coda_cnode_make(struct inode **inode, struct CodaFid *fid, struct super_block *sb)
+struct inode *coda_cnode_make(struct CodaFid *fid, struct super_block *sb)
{
struct coda_vattr attr;
+ struct inode *inode;
int error;
/* We get inode numbers from Venus -- see venus source */
error = venus_getattr(sb, fid, &attr);
- if ( error ) {
- *inode = NULL;
- return error;
- }
+ if (error)
+ return ERR_PTR(error);
- *inode = coda_iget(sb, fid, &attr);
- if ( IS_ERR(*inode) ) {
+ inode = coda_iget(sb, fid, &attr);
+ if (IS_ERR(inode))
printk("coda_cnode_make: coda_iget failed\n");
- return PTR_ERR(*inode);
- }
- return 0;
+ return inode;
}
@@ -156,19 +153,16 @@ struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb)
}
/* the CONTROL inode is made without asking attributes from Venus */
-int coda_cnode_makectl(struct inode **inode, struct super_block *sb)
+struct inode *coda_cnode_makectl(struct super_block *sb)
{
- int error = -ENOMEM;
-
- *inode = new_inode(sb);
- if (*inode) {
- (*inode)->i_ino = CTL_INO;
- (*inode)->i_op = &coda_ioctl_inode_operations;
- (*inode)->i_fop = &coda_ioctl_operations;
- (*inode)->i_mode = 0444;
- error = 0;
+ struct inode *inode = new_inode(sb);
+ if (inode) {
+ inode->i_ino = CTL_INO;
+ inode->i_op = &coda_ioctl_inode_operations;
+ inode->i_fop = &coda_ioctl_operations;
+ inode->i_mode = 0444;
+ return inode;
}
-
- return error;
+ return ERR_PTR(-ENOMEM);
}
diff --git a/fs/coda/coda_fs_i.h b/fs/coda/coda_fs_i.h
index e35071b1de0..b24fdfd8a3f 100644
--- a/fs/coda/coda_fs_i.h
+++ b/fs/coda/coda_fs_i.h
@@ -49,9 +49,9 @@ struct coda_file_info {
#define C_DYING 0x4 /* from venus (which died) */
#define C_PURGE 0x8
-int coda_cnode_make(struct inode **, struct CodaFid *, struct super_block *);
+struct inode *coda_cnode_make(struct CodaFid *, struct super_block *);
struct inode *coda_iget(struct super_block *sb, struct CodaFid *fid, struct coda_vattr *attr);
-int coda_cnode_makectl(struct inode **inode, struct super_block *sb);
+struct inode *coda_cnode_makectl(struct super_block *sb);
struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb);
void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *);
diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index 83d2fd8ec24..17751582906 100644
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -96,12 +96,11 @@ const struct file_operations coda_dir_operations = {
/* access routines: lookup, readlink, permission */
static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry, struct nameidata *nd)
{
- struct inode *inode = NULL;
- struct CodaFid resfid = { { 0, } };
- int type = 0;
- int error = 0;
+ struct super_block *sb = dir->i_sb;
const char *name = entry->d_name.name;
size_t length = entry->d_name.len;
+ struct inode *inode;
+ int type = 0;
if (length > CODA_MAXNAMLEN) {
printk(KERN_ERR "name too long: lookup, %s (%*s)\n",
@@ -111,23 +110,21 @@ static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry, struc
/* control object, create inode on the fly */
if (coda_isroot(dir) && coda_iscontrol(name, length)) {
- error = coda_cnode_makectl(&inode, dir->i_sb);
+ inode = coda_cnode_makectl(sb);
type = CODA_NOCACHE;
- goto exit;
+ } else {
+ struct CodaFid fid = { { 0, } };
+ int error = venus_lookup(sb, coda_i2f(dir), name, length,
+ &type, &fid);
+ inode = !error ? coda_cnode_make(&fid, sb) : ERR_PTR(error);
}
- error = venus_lookup(dir->i_sb, coda_i2f(dir), name, length,
- &type, &resfid);
- if (!error)
- error = coda_cnode_make(&inode, &resfid, dir->i_sb);
-
- if (error && error != -ENOENT)
- return ERR_PTR(error);
-
-exit:
- if (inode && (type & CODA_NOCACHE))
+ if (!IS_ERR(inode) && (type & CODA_NOCACHE))
coda_flag_inode(inode, C_VATTR | C_PURGE);
+ if (inode == ERR_PTR(-ENOENT))
+ inode = NULL;
+
return d_splice_alias(inode, entry);
}
diff --git a/fs/coda/inode.c b/fs/coda/inode.c
index 1c08a8cd673..5e2e1b3f068 100644
--- a/fs/coda/inode.c
+++ b/fs/coda/inode.c
@@ -204,10 +204,12 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent)
printk("coda_read_super: rootfid is %s\n", coda_f2s(&fid));
/* make root inode */
- error = coda_cnode_make(&root, &fid, sb);
- if ( error || !root ) {
- printk("Failure of coda_cnode_make for root: error %d\n", error);
- goto error;
+ root = coda_cnode_make(&fid, sb);
+ if (IS_ERR(root)) {
+ error = PTR_ERR(root);
+ printk("Failure of coda_cnode_make for root: error %d\n", error);
+ root = NULL;
+ goto error;
}
printk("coda_read_super: rootinode is %ld dev %s\n",
diff --git a/fs/dcache.c b/fs/dcache.c
index 3c6d3113a25..616fedff011 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -243,6 +243,7 @@ static void dentry_lru_add(struct dentry *dentry)
static void __dentry_lru_del(struct dentry *dentry)
{
list_del_init(&dentry->d_lru);
+ dentry->d_flags &= ~DCACHE_SHRINK_LIST;
dentry->d_sb->s_nr_dentry_unused--;
dentry_stat.nr_unused--;
}
@@ -806,6 +807,7 @@ relock:
spin_unlock(&dentry->d_lock);
} else {
list_move_tail(&dentry->d_lru, &tmp);
+ dentry->d_flags |= DCACHE_SHRINK_LIST;
spin_unlock(&dentry->d_lock);
if (!--count)
break;
@@ -1097,14 +1099,19 @@ resume:
/*
* move only zero ref count dentries to the dispose list.
+ *
+ * Those which are presently on the shrink list, being processed
+ * by shrink_dentry_list(), shouldn't be moved. Otherwise the
+ * loop in shrink_dcache_parent() might not make any progress
+ * and loop forever.
*/
- if (!dentry->d_count) {
+ if (dentry->d_count) {
+ dentry_lru_del(dentry);
+ } else if (!(dentry->d_flags & DCACHE_SHRINK_LIST)) {
dentry_lru_move_list(dentry, dispose);
+ dentry->d_flags |= DCACHE_SHRINK_LIST;
found++;
- } else {
- dentry_lru_del(dentry);
}
-
/*
* We can return to the caller if we have found some (this
* ensures forward progress). We'll be coming back to find
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index edf0a801446..427682ca9e4 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -499,9 +499,16 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
if (!sbi->hidden_dir) {
mutex_lock(&sbi->vh_mutex);
sbi->hidden_dir = hfsplus_new_inode(sb, S_IFDIR);
- hfsplus_create_cat(sbi->hidden_dir->i_ino, root, &str,
- sbi->hidden_dir);
+ if (!sbi->hidden_dir) {
+ mutex_unlock(&sbi->vh_mutex);
+ err = -ENOMEM;
+ goto out_put_root;
+ }
+ err = hfsplus_create_cat(sbi->hidden_dir->i_ino, root,
+ &str, sbi->hidden_dir);
mutex_unlock(&sbi->vh_mutex);
+ if (err)
+ goto out_put_hidden_dir;
hfsplus_mark_inode_dirty(sbi->hidden_dir,
HFSPLUS_I_CAT_DIRTY);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-10-31 02:47:02 +0000