The patch titled
Subject: autofs: change catatonic setting to a bit flag
has been added to the -mm tree. Its filename is
autofs-change-catatonic-setting-to-a-bit-flag.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/autofs-change-catatonic-setting-to-a-bit-flag.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/autofs-change-catatonic-setting-to-a-bit-flag.patch
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------------------------------------------------------
From: Ian Kent <raven@xxxxxxxxxx>
Subject: autofs: change catatonic setting to a bit flag
Change the superblock info. catatonic setting to be part of a flags bit
field.
Link: http://lkml.kernel.org/r/154296973142.9889.17275721668508589639.stgit@pluto-themaw-net
Signed-off-by: Ian Kent <raven@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/fs/autofs/autofs_i.h~autofs-change-catatonic-setting-to-a-bit-flag
+++ a/fs/autofs/autofs_i.h
@@ -103,16 +103,18 @@ struct autofs_wait_queue {
#define AUTOFS_SBI_MAGIC 0x6d4a556d
+#define AUTOFS_SBI_CATATONIC 0x0001
+
struct autofs_sb_info {
u32 magic;
int pipefd;
struct file *pipe;
struct pid *oz_pgrp;
- int catatonic;
int version;
int sub_version;
int min_proto;
int max_proto;
+ unsigned int flags;
unsigned long exp_timeout;
unsigned int type;
struct super_block *sb;
@@ -142,7 +144,8 @@ static inline struct autofs_info *autofs
*/
static inline int autofs_oz_mode(struct autofs_sb_info *sbi)
{
- return sbi->catatonic || task_pgrp(current) == sbi->oz_pgrp;
+ return ((sbi->flags & AUTOFS_SBI_CATATONIC) ||
+ task_pgrp(current) == sbi->oz_pgrp);
}
struct inode *autofs_get_inode(struct super_block *, umode_t);
--- a/fs/autofs/dev-ioctl.c~autofs-change-catatonic-setting-to-a-bit-flag
+++ a/fs/autofs/dev-ioctl.c
@@ -350,7 +350,7 @@ static int autofs_dev_ioctl_setpipefd(st
pipefd = param->setpipefd.pipefd;
mutex_lock(&sbi->wq_mutex);
- if (!sbi->catatonic) {
+ if (!(sbi->flags & AUTOFS_SBI_CATATONIC)) {
mutex_unlock(&sbi->wq_mutex);
return -EBUSY;
} else {
@@ -377,7 +377,7 @@ static int autofs_dev_ioctl_setpipefd(st
swap(sbi->oz_pgrp, new_pid);
sbi->pipefd = pipefd;
sbi->pipe = pipe;
- sbi->catatonic = 0;
+ sbi->flags &= ~AUTOFS_SBI_CATATONIC;
}
out:
put_pid(new_pid);
--- a/fs/autofs/inode.c~autofs-change-catatonic-setting-to-a-bit-flag
+++ a/fs/autofs/inode.c
@@ -227,12 +227,12 @@ int autofs_fill_super(struct super_block
sbi->magic = AUTOFS_SBI_MAGIC;
sbi->pipefd = -1;
sbi->pipe = NULL;
- sbi->catatonic = 1;
sbi->exp_timeout = 0;
sbi->oz_pgrp = NULL;
sbi->sb = s;
sbi->version = 0;
sbi->sub_version = 0;
+ sbi->flags = AUTOFS_SBI_CATATONIC;
set_autofs_type_indirect(&sbi->type);
sbi->min_proto = 0;
sbi->max_proto = 0;
@@ -322,7 +322,7 @@ int autofs_fill_super(struct super_block
if (ret < 0)
goto fail_fput;
sbi->pipe = pipe;
- sbi->catatonic = 0;
+ sbi->flags &= ~AUTOFS_SBI_CATATONIC;
/*
* Success! Install the root dentry now to indicate completion.
--- a/fs/autofs/root.c~autofs-change-catatonic-setting-to-a-bit-flag
+++ a/fs/autofs/root.c
@@ -510,7 +510,8 @@ static struct dentry *autofs_lookup(stru
sbi = autofs_sbi(dir->i_sb);
pr_debug("pid = %u, pgrp = %u, catatonic = %d, oz_mode = %d\n",
- current->pid, task_pgrp_nr(current), sbi->catatonic,
+ current->pid, task_pgrp_nr(current),
+ sbi->flags & AUTOFS_SBI_CATATONIC,
autofs_oz_mode(sbi));
active = autofs_lookup_active(dentry);
@@ -563,7 +564,7 @@ static int autofs_dir_symlink(struct ino
* autofs mount is catatonic but the state of an autofs
* file system needs to be preserved over restarts.
*/
- if (sbi->catatonic)
+ if (sbi->flags & AUTOFS_SBI_CATATONIC)
return -EACCES;
BUG_ON(!ino);
@@ -626,7 +627,7 @@ static int autofs_dir_unlink(struct inod
* autofs mount is catatonic but the state of an autofs
* file system needs to be preserved over restarts.
*/
- if (sbi->catatonic)
+ if (sbi->flags & AUTOFS_SBI_CATATONIC)
return -EACCES;
if (atomic_dec_and_test(&ino->count)) {
@@ -714,7 +715,7 @@ static int autofs_dir_rmdir(struct inode
* autofs mount is catatonic but the state of an autofs
* file system needs to be preserved over restarts.
*/
- if (sbi->catatonic)
+ if (sbi->flags & AUTOFS_SBI_CATATONIC)
return -EACCES;
spin_lock(&sbi->lookup_lock);
@@ -759,7 +760,7 @@ static int autofs_dir_mkdir(struct inode
* autofs mount is catatonic but the state of an autofs
* file system needs to be preserved over restarts.
*/
- if (sbi->catatonic)
+ if (sbi->flags & AUTOFS_SBI_CATATONIC)
return -EACCES;
pr_debug("dentry %p, creating %pd\n", dentry, dentry);
--- a/fs/autofs/waitq.c~autofs-change-catatonic-setting-to-a-bit-flag
+++ a/fs/autofs/waitq.c
@@ -20,14 +20,14 @@ void autofs_catatonic_mode(struct autofs
struct autofs_wait_queue *wq, *nwq;
mutex_lock(&sbi->wq_mutex);
- if (sbi->catatonic) {
+ if (sbi->flags & AUTOFS_SBI_CATATONIC) {
mutex_unlock(&sbi->wq_mutex);
return;
}
pr_debug("entering catatonic mode\n");
- sbi->catatonic = 1;
+ sbi->flags |= AUTOFS_SBI_CATATONIC;
wq = sbi->queues;
sbi->queues = NULL; /* Erase all wait queues */
while (wq) {
@@ -255,7 +255,7 @@ static int validate_request(struct autof
struct autofs_wait_queue *wq;
struct autofs_info *ino;
- if (sbi->catatonic)
+ if (sbi->flags & AUTOFS_SBI_CATATONIC)
return -ENOENT;
/* Wait in progress, continue; */
@@ -290,7 +290,7 @@ static int validate_request(struct autof
if (mutex_lock_interruptible(&sbi->wq_mutex))
return -EINTR;
- if (sbi->catatonic)
+ if (sbi->flags & AUTOFS_SBI_CATATONIC)
return -ENOENT;
wq = autofs_find_wait(sbi, qstr);
@@ -359,7 +359,7 @@ int autofs_wait(struct autofs_sb_info *s
pid_t tgid;
/* In catatonic mode, we don't wait for nobody */
- if (sbi->catatonic)
+ if (sbi->flags & AUTOFS_SBI_CATATONIC)
return -ENOENT;
/*
_
Patches currently in -mm which might be from raven@xxxxxxxxxx are
autofs-improve-ioctl-sbi-checks.patch
autofs-fix-possible-inode-leak-in-autofs_fill_super.patch
autofs-simplify-parse_options-function-call.patch
autofs-change-catatonic-setting-to-a-bit-flag.patch
autofs-add-strictexpire-mount-option.patch
