summaryrefslogtreecommitdiff
path: root/fs
diff options
context:
space:
mode:
Diffstat (limited to 'fs')
-rw-r--r--fs/Kconfig30
-rw-r--r--fs/Makefile3
-rw-r--r--fs/binfmt_flat.c4
-rw-r--r--fs/binfmt_misc.c4
-rw-r--r--fs/coda/psdev.c5
-rw-r--r--fs/cramfs/inode.c84
-rw-r--r--fs/fat/inode.c10
-rw-r--r--fs/ioprio.c8
-rw-r--r--fs/lockd/svc.c33
-rw-r--r--fs/nfs/callback.c3
-rw-r--r--fs/nfsd/nfs3proc.c8
-rw-r--r--fs/nfsd/nfs4callback.c3
-rw-r--r--fs/nfsd/nfs4xdr.c171
-rw-r--r--fs/nfsd/nfsfh.c30
-rw-r--r--fs/nfsd/nfsproc.c6
-rw-r--r--fs/nfsd/nfssvc.c1
-rw-r--r--fs/nfsd/vfs.c63
-rw-r--r--fs/proc/nommu.c4
-rw-r--r--fs/proc/proc_misc.c4
-rw-r--r--fs/proc/task_mmu.c4
-rw-r--r--fs/sysfs/dir.c245
-rw-r--r--fs/sysfs/file.c88
-rw-r--r--fs/sysfs/inode.c23
-rw-r--r--fs/sysfs/mount.c94
-rw-r--r--fs/sysfs/sysfs.h20
-rw-r--r--fs/xfs/linux-2.6/xfs_super.c11
-rw-r--r--fs/xfs/xfs_mount.h1
27 files changed, 633 insertions, 327 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index d3873583360b..d752ce1e48c6 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -419,6 +419,14 @@ config FS_POSIX_ACL
bool
default n
+config FILE_LOCKING
+ bool "Enable POSIX file locking API" if EMBEDDED
+ default y
+ help
+ This option enables standard file locking support, required
+ for filesystems like NFS and for the flock() system
+ call. Disabling this option saves about 11k.
+
source "fs/xfs/Kconfig"
source "fs/gfs2/Kconfig"
@@ -1765,6 +1773,28 @@ config SUNRPC_XPRT_RDMA
If unsure, say N.
+config SUNRPC_REGISTER_V4
+ bool "Register local RPC services via rpcbind v4 (EXPERIMENTAL)"
+ depends on SUNRPC && EXPERIMENTAL
+ default n
+ help
+ Sun added support for registering RPC services at an IPv6
+ address by creating two new versions of the rpcbind protocol
+ (RFC 1833).
+
+ This option enables support in the kernel RPC server for
+ registering kernel RPC services via version 4 of the rpcbind
+ protocol. If you enable this option, you must run a portmapper
+ daemon that supports rpcbind protocol version 4.
+
+ Serving NFS over IPv6 from knfsd (the kernel's NFS server)
+ requires that you enable this option and use a portmapper that
+ supports rpcbind version 4.
+
+ If unsure, say N to get traditional behavior (register kernel
+ RPC services using only rpcbind version 2). Distributions
+ using the legacy Linux portmapper daemon must say N here.
+
config RPCSEC_GSS_KRB5
tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
depends on SUNRPC && EXPERIMENTAL
diff --git a/fs/Makefile b/fs/Makefile
index a1482a5eff15..4b86d433baaf 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -7,7 +7,7 @@
obj-y := open.o read_write.o file_table.o super.o \
char_dev.o stat.o exec.o pipe.o namei.o fcntl.o \
- ioctl.o readdir.o select.o fifo.o locks.o dcache.o inode.o \
+ ioctl.o readdir.o select.o fifo.o dcache.o inode.o \
attr.o bad_inode.o file.o filesystems.o namespace.o aio.o \
seq_file.o xattr.o libfs.o fs-writeback.o \
pnode.o drop_caches.o splice.o sync.o utimes.o \
@@ -27,6 +27,7 @@ obj-$(CONFIG_ANON_INODES) += anon_inodes.o
obj-$(CONFIG_SIGNALFD) += signalfd.o
obj-$(CONFIG_TIMERFD) += timerfd.o
obj-$(CONFIG_EVENTFD) += eventfd.o
+obj-$(CONFIG_FILE_LOCKING) += locks.o
obj-$(CONFIG_COMPAT) += compat.o compat_ioctl.o
nfsd-$(CONFIG_NFSD) := nfsctl.o
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index 56372ecf1690..dfc0197905ca 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -914,7 +914,9 @@ static int load_flat_binary(struct linux_binprm * bprm, struct pt_regs * regs)
/* Stash our initial stack pointer into the mm structure */
current->mm->start_stack = (unsigned long )sp;
-
+#ifdef FLAT_PLAT_INIT
+ FLAT_PLAT_INIT(regs);
+#endif
DBG_FLT("start_thread(regs=0x%x, entry=0x%x, start_stack=0x%x)\n",
(int)regs, (int)start_addr, (int)current->mm->start_stack);
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index 756205314c24..8d7e88e02e0f 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -120,8 +120,6 @@ static int load_misc_binary(struct linux_binprm *bprm, struct pt_regs *regs)
if (bprm->misc_bang)
goto _ret;
- bprm->misc_bang = 1;
-
/* to keep locking time low, we copy the interpreter string */
read_lock(&entries_lock);
fmt = check_file(bprm);
@@ -199,6 +197,8 @@ static int load_misc_binary(struct linux_binprm *bprm, struct pt_regs *regs)
if (retval < 0)
goto _error;
+ bprm->misc_bang = 1;
+
retval = search_binary_handler (bprm, regs);
if (retval < 0)
goto _error;
diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c
index 0d9b80ec689c..cfd29da714d1 100644
--- a/fs/coda/psdev.c
+++ b/fs/coda/psdev.c
@@ -362,9 +362,8 @@ static int init_coda_psdev(void)
goto out_chrdev;
}
for (i = 0; i < MAX_CODADEVS; i++)
- device_create_drvdata(coda_psdev_class, NULL,
- MKDEV(CODA_PSDEV_MAJOR, i),
- NULL, "cfs%d", i);
+ device_create(coda_psdev_class, NULL,
+ MKDEV(CODA_PSDEV_MAJOR, i), NULL, "cfs%d", i);
coda_sysctl_init();
goto out;
diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index 0c3b618c15b3..f40423eb1a14 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -43,58 +43,13 @@ static DEFINE_MUTEX(read_mutex);
static int cramfs_iget5_test(struct inode *inode, void *opaque)
{
struct cramfs_inode *cramfs_inode = opaque;
-
- if (inode->i_ino != CRAMINO(cramfs_inode))
- return 0; /* does not match */
-
- if (inode->i_ino != 1)
- return 1;
-
- /* all empty directories, char, block, pipe, and sock, share inode #1 */
-
- if ((inode->i_mode != cramfs_inode->mode) ||
- (inode->i_gid != cramfs_inode->gid) ||
- (inode->i_uid != cramfs_inode->uid))
- return 0; /* does not match */
-
- if ((S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) &&
- (inode->i_rdev != old_decode_dev(cramfs_inode->size)))
- return 0; /* does not match */
-
- return 1; /* matches */
+ return inode->i_ino == CRAMINO(cramfs_inode) && inode->i_ino != 1;
}
static int cramfs_iget5_set(struct inode *inode, void *opaque)
{
- static struct timespec zerotime;
struct cramfs_inode *cramfs_inode = opaque;
- inode->i_mode = cramfs_inode->mode;
- inode->i_uid = cramfs_inode->uid;
- inode->i_size = cramfs_inode->size;
- inode->i_blocks = (cramfs_inode->size - 1) / 512 + 1;
- inode->i_gid = cramfs_inode->gid;
- /* Struct copy intentional */
- inode->i_mtime = inode->i_atime = inode->i_ctime = zerotime;
inode->i_ino = CRAMINO(cramfs_inode);
- /* inode->i_nlink is left 1 - arguably wrong for directories,
- but it's the best we can do without reading the directory
- contents. 1 yields the right result in GNU find, even
- without -noleaf option. */
- if (S_ISREG(inode->i_mode)) {
- inode->i_fop = &generic_ro_fops;
- inode->i_data.a_ops = &cramfs_aops;
- } else if (S_ISDIR(inode->i_mode)) {
- inode->i_op = &cramfs_dir_inode_operations;
- inode->i_fop = &cramfs_directory_operations;
- } else if (S_ISLNK(inode->i_mode)) {
- inode->i_op = &page_symlink_inode_operations;
- inode->i_data.a_ops = &cramfs_aops;
- } else {
- inode->i_size = 0;
- inode->i_blocks = 0;
- init_special_inode(inode, inode->i_mode,
- old_decode_dev(cramfs_inode->size));
- }
return 0;
}
@@ -104,12 +59,48 @@ static struct inode *get_cramfs_inode(struct super_block *sb,
struct inode *inode = iget5_locked(sb, CRAMINO(cramfs_inode),
cramfs_iget5_test, cramfs_iget5_set,
cramfs_inode);
+ static struct timespec zerotime;
+
if (inode && (inode->i_state & I_NEW)) {
+ inode->i_mode = cramfs_inode->mode;
+ inode->i_uid = cramfs_inode->uid;
+ inode->i_size = cramfs_inode->size;
+ inode->i_blocks = (cramfs_inode->size - 1) / 512 + 1;
+ inode->i_gid = cramfs_inode->gid;
+ /* Struct copy intentional */
+ inode->i_mtime = inode->i_atime = inode->i_ctime = zerotime;
+ /* inode->i_nlink is left 1 - arguably wrong for directories,
+ but it's the best we can do without reading the directory
+ contents. 1 yields the right result in GNU find, even
+ without -noleaf option. */
+ if (S_ISREG(inode->i_mode)) {
+ inode->i_fop = &generic_ro_fops;
+ inode->i_data.a_ops = &cramfs_aops;
+ } else if (S_ISDIR(inode->i_mode)) {
+ inode->i_op = &cramfs_dir_inode_operations;
+ inode->i_fop = &cramfs_directory_operations;
+ } else if (S_ISLNK(inode->i_mode)) {
+ inode->i_op = &page_symlink_inode_operations;
+ inode->i_data.a_ops = &cramfs_aops;
+ } else {
+ inode->i_size = 0;
+ inode->i_blocks = 0;
+ init_special_inode(inode, inode->i_mode,
+ old_decode_dev(cramfs_inode->size));
+ }
unlock_new_inode(inode);
}
return inode;
}
+static void cramfs_drop_inode(struct inode *inode)
+{
+ if (inode->i_ino == 1)
+ generic_delete_inode(inode);
+ else
+ generic_drop_inode(inode);
+}
+
/*
* We have our own block cache: don't fill up the buffer cache
* with the rom-image, because the way the filesystem is set
@@ -534,6 +525,7 @@ static const struct super_operations cramfs_ops = {
.put_super = cramfs_put_super,
.remount_fs = cramfs_remount,
.statfs = cramfs_statfs,
+ .drop_inode = cramfs_drop_inode,
};
static int cramfs_get_sb(struct file_system_type *fs_type,
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 6d266d793e2c..80ff3381fa21 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -562,26 +562,23 @@ static int fat_write_inode(struct inode *inode, int wait)
struct buffer_head *bh;
struct msdos_dir_entry *raw_entry;
loff_t i_pos;
- int err = 0;
+ int err;
retry:
i_pos = MSDOS_I(inode)->i_pos;
if (inode->i_ino == MSDOS_ROOT_INO || !i_pos)
return 0;
- lock_super(sb);
bh = sb_bread(sb, i_pos >> sbi->dir_per_block_bits);
if (!bh) {
printk(KERN_ERR "FAT: unable to read inode block "
"for updating (i_pos %lld)\n", i_pos);
- err = -EIO;
- goto out;
+ return -EIO;
}
spin_lock(&sbi->inode_hash_lock);
if (i_pos != MSDOS_I(inode)->i_pos) {
spin_unlock(&sbi->inode_hash_lock);
brelse(bh);
- unlock_super(sb);
goto retry;
}
@@ -607,11 +604,10 @@ retry:
}
spin_unlock(&sbi->inode_hash_lock);
mark_buffer_dirty(bh);
+ err = 0;
if (wait)
err = sync_dirty_buffer(bh);
brelse(bh);
-out:
- unlock_super(sb);
return err;
}
diff --git a/fs/ioprio.c b/fs/ioprio.c
index c4a1c3c65aac..da3cc460d4df 100644
--- a/fs/ioprio.c
+++ b/fs/ioprio.c
@@ -115,11 +115,11 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
pgrp = task_pgrp(current);
else
pgrp = find_vpid(who);
- do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
+ do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
ret = set_task_ioprio(p, ioprio);
if (ret)
break;
- } while_each_pid_task(pgrp, PIDTYPE_PGID, p);
+ } while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
break;
case IOPRIO_WHO_USER:
if (!who)
@@ -204,7 +204,7 @@ asmlinkage long sys_ioprio_get(int which, int who)
pgrp = task_pgrp(current);
else
pgrp = find_vpid(who);
- do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
+ do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
tmpio = get_task_ioprio(p);
if (tmpio < 0)
continue;
@@ -212,7 +212,7 @@ asmlinkage long sys_ioprio_get(int which, int who)
ret = tmpio;
else
ret = ioprio_best(ret, tmpio);
- } while_each_pid_task(pgrp, PIDTYPE_PGID, p);
+ } while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
break;
case IOPRIO_WHO_USER:
if (!who)
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 5bd9bf0fa9df..450a3fa87941 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -97,15 +97,19 @@ unsigned long get_nfs_grace_period(void)
}
EXPORT_SYMBOL(get_nfs_grace_period);
-static unsigned long set_grace_period(void)
+static void grace_ender(struct work_struct *not_used)
{
- nlmsvc_grace_period = 1;
- return get_nfs_grace_period() + jiffies;
+ nlmsvc_grace_period = 0;
}
-static inline void clear_grace_period(void)
+static DECLARE_DELAYED_WORK(grace_period_end, grace_ender);
+
+static void set_grace_period(void)
{
- nlmsvc_grace_period = 0;
+ unsigned long grace_period = get_nfs_grace_period() + jiffies;
+
+ nlmsvc_grace_period = 1;
+ schedule_delayed_work(&grace_period_end, grace_period);
}
/*
@@ -116,7 +120,6 @@ lockd(void *vrqstp)
{
int err = 0, preverr = 0;
struct svc_rqst *rqstp = vrqstp;
- unsigned long grace_period_expire;
/* try_to_freeze() is called from svc_recv() */
set_freezable();
@@ -139,7 +142,7 @@ lockd(void *vrqstp)
nlm_timeout = LOCKD_DFLT_TIMEO;
nlmsvc_timeout = nlm_timeout * HZ;
- grace_period_expire = set_grace_period();
+ set_grace_period();
/*
* The main request loop. We don't terminate until the last
@@ -153,21 +156,12 @@ lockd(void *vrqstp)
flush_signals(current);
if (nlmsvc_ops) {
nlmsvc_invalidate_all();
- grace_period_expire = set_grace_period();
+ set_grace_period();
}
continue;
}
- /*
- * Retry any blocked locks that have been notified by
- * the VFS. Don't do this during grace period.
- * (Theoretically, there shouldn't even be blocked locks
- * during grace period).
- */
- if (!nlmsvc_grace_period) {
- timeout = nlmsvc_retry_blocked();
- } else if (time_before(grace_period_expire, jiffies))
- clear_grace_period();
+ timeout = nlmsvc_retry_blocked();
/*
* Find a socket with data available and call its
@@ -195,6 +189,7 @@ lockd(void *vrqstp)
svc_process(rqstp);
}
flush_signals(current);
+ cancel_delayed_work_sync(&grace_period_end);
if (nlmsvc_ops)
nlmsvc_invalidate_all();
nlm_shutdown_hosts();
@@ -266,7 +261,7 @@ lockd_up(int proto) /* Maybe add a 'family' option when IPv6 is supported ?? */
"lockd_up: no pid, %d users??\n", nlmsvc_users);
error = -ENOMEM;
- serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, NULL);
+ serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, AF_INET, NULL);
if (!serv) {
printk(KERN_WARNING "lockd_up: create service failed\n");
goto out;
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index f447f4b4476c..6a09760c5960 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -105,7 +105,8 @@ int nfs_callback_up(void)
mutex_lock(&nfs_callback_mutex);
if (nfs_callback_info.users++ || nfs_callback_info.task != NULL)
goto out;
- serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE, NULL);
+ serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE,
+ AF_INET, NULL);
ret = -ENOMEM;
if (!serv)
goto out_err;
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c
index 4d617ea28cfc..9dbd2eb91281 100644
--- a/fs/nfsd/nfs3proc.c
+++ b/fs/nfsd/nfs3proc.c
@@ -63,7 +63,8 @@ nfsd3_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp,
SVCFH_fmt(&argp->fh));
fh_copy(&resp->fh, &argp->fh);
- nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
+ nfserr = fh_verify(rqstp, &resp->fh, 0,
+ NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
if (nfserr)
RETURN_STATUS(nfserr);
@@ -530,7 +531,7 @@ nfsd3_proc_fsstat(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
dprintk("nfsd: FSSTAT(3) %s\n",
SVCFH_fmt(&argp->fh));
- nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats);
+ nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0);
fh_put(&argp->fh);
RETURN_STATUS(nfserr);
}
@@ -558,7 +559,8 @@ nfsd3_proc_fsinfo(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
resp->f_maxfilesize = ~(u32) 0;
resp->f_properties = NFS3_FSF_DEFAULT;
- nfserr = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP);
+ nfserr = fh_verify(rqstp, &argp->fh, 0,
+ NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
/* Check special features of the file system. May request
* different read/write sizes for file systems known to have
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 702fa577aa6e..ab13e02c5683 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -225,7 +225,8 @@ encode_cb_recall(struct xdr_stream *xdr, struct nfs4_cb_recall *cb_rec)
RESERVE_SPACE(12+sizeof(cb_rec->cbr_stateid) + len);
WRITE32(OP_CB_RECALL);
- WRITEMEM(&cb_rec->cbr_stateid, sizeof(stateid_t));
+ WRITE32(cb_rec->cbr_stateid.si_generation);
+ WRITEMEM(&cb_rec->cbr_stateid.si_opaque, sizeof(stateid_opaque_t));
WRITE32(cb_rec->cbr_trunc);
WRITE32(len);
WRITEMEM(cb_rec->cbr_fhval, len);
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 14ba4d9b2859..afcdf4b76843 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -413,6 +413,18 @@ out_nfserr:
}
static __be32
+nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid)
+{
+ DECODE_HEAD;
+
+ READ_BUF(sizeof(stateid_t));
+ READ32(sid->si_generation);
+ COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
+
+ DECODE_TAIL;
+}
+
+static __be32
nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access)
{
DECODE_HEAD;
@@ -429,10 +441,9 @@ nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close)
DECODE_HEAD;
close->cl_stateowner = NULL;
- READ_BUF(4 + sizeof(stateid_t));
+ READ_BUF(4);
READ32(close->cl_seqid);
- READ32(close->cl_stateid.si_generation);
- COPYMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t));
+ return nfsd4_decode_stateid(argp, &close->cl_stateid);
DECODE_TAIL;
}
@@ -493,13 +504,7 @@ nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create
static inline __be32
nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr)
{
- DECODE_HEAD;
-
- READ_BUF(sizeof(stateid_t));
- READ32(dr->dr_stateid.si_generation);
- COPYMEM(&dr->dr_stateid.si_opaque, sizeof(stateid_opaque_t));
-
- DECODE_TAIL;
+ return nfsd4_decode_stateid(argp, &dr->dr_stateid);
}
static inline __be32
@@ -542,20 +547,22 @@ nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock)
READ32(lock->lk_is_new);
if (lock->lk_is_new) {
- READ_BUF(36);
+ READ_BUF(4);
READ32(lock->lk_new_open_seqid);
- READ32(lock->lk_new_open_stateid.si_generation);
-
- COPYMEM(&lock->lk_new_open_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid);
+ if (status)
+ return status;
+ READ_BUF(8 + sizeof(clientid_t));
READ32(lock->lk_new_lock_seqid);
COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t));
READ32(lock->lk_new_owner.len);
READ_BUF(lock->lk_new_owner.len);
READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len);
} else {
- READ_BUF(20);
- READ32(lock->lk_old_lock_stateid.si_generation);
- COPYMEM(&lock->lk_old_lock_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid);
+ if (status)
+ return status;
+ READ_BUF(4);
READ32(lock->lk_old_lock_seqid);
}
@@ -587,13 +594,15 @@ nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku)
DECODE_HEAD;
locku->lu_stateowner = NULL;
- READ_BUF(24 + sizeof(stateid_t));
+ READ_BUF(8);
READ32(locku->lu_type);
if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT))
goto xdr_error;
READ32(locku->lu_seqid);
- READ32(locku->lu_stateid.si_generation);
- COPYMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &locku->lu_stateid);
+ if (status)
+ return status;
+ READ_BUF(16);
READ64(locku->lu_offset);
READ64(locku->lu_length);
@@ -678,8 +687,10 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
READ32(open->op_delegate_type);
break;
case NFS4_OPEN_CLAIM_DELEGATE_CUR:
- READ_BUF(sizeof(stateid_t) + 4);
- COPYMEM(&open->op_delegate_stateid, sizeof(stateid_t));
+ status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid);
+ if (status)
+ return status;
+ READ_BUF(4);
READ32(open->op_fname.len);
READ_BUF(open->op_fname.len);
SAVEMEM(open->op_fname.data, open->op_fname.len);
@@ -699,9 +710,10 @@ nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_con
DECODE_HEAD;
open_conf->oc_stateowner = NULL;
- READ_BUF(4 + sizeof(stateid_t));
- READ32(open_conf->oc_req_stateid.si_generation);
- COPYMEM(&open_conf->oc_req_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid);
+ if (status)
+ return status;
+ READ_BUF(4);
READ32(open_conf->oc_seqid);
DECODE_TAIL;
@@ -713,9 +725,10 @@ nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_d
DECODE_HEAD;
open_down->od_stateowner = NULL;
- READ_BUF(12 + sizeof(stateid_t));
- READ32(open_down->od_stateid.si_generation);
- COPYMEM(&open_down->od_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &open_down->od_stateid);
+ if (status)
+ return status;
+ READ_BUF(12);
READ32(open_down->od_seqid);
READ32(open_down->od_share_access);
READ32(open_down->od_share_deny);
@@ -743,9 +756,10 @@ nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read)
{
DECODE_HEAD;
- READ_BUF(sizeof(stateid_t) + 12);
- READ32(read->rd_stateid.si_generation);
- COPYMEM(&read->rd_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &read->rd_stateid);
+ if (status)
+ return status;
+ READ_BUF(12);
READ64(read->rd_offset);
READ32(read->rd_length);
@@ -834,15 +848,13 @@ nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp,
static __be32
nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr)
{
- DECODE_HEAD;
-
- READ_BUF(sizeof(stateid_t));
- READ32(setattr->sa_stateid.si_generation);
- COPYMEM(&setattr->sa_stateid.si_opaque, sizeof(stateid_opaque_t));
- if ((status = nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, &setattr->sa_acl)))
- goto out;
+ __be32 status;
- DECODE_TAIL;
+ status = nfsd4_decode_stateid(argp, &setattr->sa_stateid);
+ if (status)
+ return status;
+ return nfsd4_decode_fattr(argp, setattr->sa_bmval,
+ &setattr->sa_iattr, &setattr->sa_acl);
}
static __be32
@@ -927,9 +939,10 @@ nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write)
int len;
DECODE_HEAD;
- READ_BUF(sizeof(stateid_opaque_t) + 20);
- READ32(write->wr_stateid.si_generation);
- COPYMEM(&write->wr_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &write->wr_stateid);
+ if (status)
+ return status;
+ READ_BUF(16);
READ64(write->wr_offset);
READ32(write->wr_stable_how);
if (write->wr_stable_how > 2)
@@ -1183,7 +1196,6 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
* Header routine to setup seqid operation replay cache
*/
#define ENCODE_SEQID_OP_HEAD \
- __be32 *p; \
__be32 *save; \
\
save = resp->p;
@@ -1950,6 +1962,17 @@ fail:
return -EINVAL;
}
+static void
+nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid)
+{
+ ENCODE_HEAD;
+
+ RESERVE_SPACE(sizeof(stateid_t));
+ WRITE32(sid->si_generation);
+ WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
+ ADJUST_ARGS();
+}
+
static __be32
nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access)
{
@@ -1969,12 +1992,9 @@ nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_c
{
ENCODE_SEQID_OP_HEAD;
- if (!nfserr) {
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(close->cl_stateid.si_generation);
- WRITEMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- }
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &close->cl_stateid);
+
ENCODE_SEQID_OP_TAIL(close->cl_stateowner);
return nfserr;
}
@@ -2074,12 +2094,9 @@ nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lo
{
ENCODE_SEQID_OP_HEAD;
- if (!nfserr) {
- RESERVE_SPACE(4 + sizeof(stateid_t));
- WRITE32(lock->lk_resp_stateid.si_generation);
- WRITEMEM(&lock->lk_resp_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- } else if (nfserr == nfserr_denied)
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &lock->lk_resp_stateid);
+ else if (nfserr == nfserr_denied)
nfsd4_encode_lock_denied(resp, &lock->lk_denied);
ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner);
@@ -2099,13 +2116,9 @@ nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_l
{
ENCODE_SEQID_OP_HEAD;
- if (!nfserr) {
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(locku->lu_stateid.si_generation);
- WRITEMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- }
-
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &locku->lu_stateid);
+
ENCODE_SEQID_OP_TAIL(locku->lu_stateowner);
return nfserr;
}
@@ -2128,14 +2141,14 @@ nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_li
static __be32
nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open)
{
+ ENCODE_HEAD;
ENCODE_SEQID_OP_HEAD;
if (nfserr)
goto out;
- RESERVE_SPACE(36 + sizeof(stateid_t));
- WRITE32(open->op_stateid.si_generation);
- WRITEMEM(&open->op_stateid.si_opaque, sizeof(stateid_opaque_t));
+ nfsd4_encode_stateid(resp, &open->op_stateid);
+ RESERVE_SPACE(40);
WRITECINFO(open->op_cinfo);
WRITE32(open->op_rflags);
WRITE32(2);
@@ -2148,8 +2161,8 @@ nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_op
case NFS4_OPEN_DELEGATE_NONE:
break;
case NFS4_OPEN_DELEGATE_READ:
- RESERVE_SPACE(20 + sizeof(stateid_t));
- WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t));
+ nfsd4_encode_stateid(resp, &open->op_delegate_stateid);
+ RESERVE_SPACE(20);
WRITE32(open->op_recall);
/*
@@ -2162,8 +2175,8 @@ nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_op
ADJUST_ARGS();
break;
case NFS4_OPEN_DELEGATE_WRITE:
- RESERVE_SPACE(32 + sizeof(stateid_t));
- WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t));
+ nfsd4_encode_stateid(resp, &open->op_delegate_stateid);
+ RESERVE_SPACE(32);
WRITE32(0);
/*
@@ -2195,13 +2208,9 @@ static __be32
nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc)
{
ENCODE_SEQID_OP_HEAD;
-
- if (!nfserr) {
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(oc->oc_resp_stateid.si_generation);
- WRITEMEM(&oc->oc_resp_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- }
+
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &oc->oc_resp_stateid);
ENCODE_SEQID_OP_TAIL(oc->oc_stateowner);
return nfserr;
@@ -2211,13 +2220,9 @@ static __be32
nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od)
{
ENCODE_SEQID_OP_HEAD;
-
- if (!nfserr) {
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(od->od_stateid.si_generation);
- WRITEMEM(&od->od_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- }
+
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &od->od_stateid);
ENCODE_SEQID_OP_TAIL(od->od_stateowner);
return nfserr;
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index ea37c96f0445..cd25d91895a1 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -302,17 +302,27 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
if (error)
goto out;
- if (!(access & NFSD_MAY_LOCK)) {
- /*
- * pseudoflavor restrictions are not enforced on NLM,
- * which clients virtually always use auth_sys for,
- * even while using RPCSEC_GSS for NFS.
- */
- error = check_nfsd_access(exp, rqstp);
- if (error)
- goto out;
- }
+ /*
+ * pseudoflavor restrictions are not enforced on NLM,
+ * which clients virtually always use auth_sys for,
+ * even while using RPCSEC_GSS for NFS.
+ */
+ if (access & NFSD_MAY_LOCK)
+ goto skip_pseudoflavor_check;
+ /*
+ * Clients may expect to be able to use auth_sys during mount,
+ * even if they use gss for everything else; see section 2.3.2
+ * of rfc 2623.
+ */
+ if (access & NFSD_MAY_BYPASS_GSS_ON_ROOT
+ && exp->ex_path.dentry == dentry)
+ goto skip_pseudoflavor_check;
+
+ error = check_nfsd_access(exp, rqstp);
+ if (error)
+ goto out;
+skip_pseudoflavor_check:
/* Finally, check access permissions. */
error = nfsd_permission(rqstp, exp, dentry, access);
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index 0766f95d236a..5cffeca7acef 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -65,7 +65,8 @@ nfsd_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp,
dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh));
fh_copy(&resp->fh, &argp->fh);
- nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
+ nfserr = fh_verify(rqstp, &resp->fh, 0,
+ NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
return nfsd_return_attrs(nfserr, resp);
}
@@ -521,7 +522,8 @@ nfsd_proc_statfs(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh));
- nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats);
+ nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats,
+ NFSD_MAY_BYPASS_GSS_ON_ROOT);
fh_put(&argp->fh);
return nfserr;
}
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 80292ff5e924..7f3d76a7839d 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -229,6 +229,7 @@ int nfsd_create_serv(void)
atomic_set(&nfsd_busy, 0);
nfsd_serv = svc_create_pooled(&nfsd_program, nfsd_max_blksize,
+ AF_INET,
nfsd_last_thread, nfsd, THIS_MODULE);
if (nfsd_serv == NULL)
err = -ENOMEM;
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 18060bed5267..aa1d0d6489a1 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -83,7 +83,6 @@ struct raparm_hbucket {
spinlock_t pb_lock;
} ____cacheline_aligned_in_smp;
-static struct raparms * raparml;
#define RAPARM_HASH_BITS 4
#define RAPARM_HASH_SIZE (1<<RAPARM_HASH_BITS)
#define RAPARM_HASH_MASK (RAPARM_HASH_SIZE-1)
@@ -1866,9 +1865,9 @@ out:
* N.B. After this call fhp needs an fh_put
*/
__be32
-nfsd_statfs(struct svc_rqst *rqstp, struct svc_fh *fhp, struct kstatfs *stat)
+nfsd_statfs(struct svc_rqst *rqstp, struct svc_fh *fhp, struct kstatfs *stat, int access)
{
- __be32 err = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP);
+ __be32 err = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP | access);
if (!err && vfs_statfs(fhp->fh_dentry,stat))
err = nfserr_io;
return err;
@@ -1966,11 +1965,20 @@ nfsd_permission(struct svc_rqst *rqstp, struct svc_export *exp,
void
nfsd_racache_shutdown(void)
{
- if (!raparml)
- return;
+ struct raparms *raparm, *last_raparm;
+ unsigned int i;
+
dprintk("nfsd: freeing readahead buffers.\n");
- kfree(raparml);
- raparml = NULL;
+
+ for (i = 0; i < RAPARM_HASH_SIZE; i++) {
+ raparm = raparm_hash[i].pb_head;
+ while(raparm) {
+ last_raparm = raparm;
+ raparm = raparm->p_next;
+ kfree(last_raparm);
+ }
+ raparm_hash[i].pb_head = NULL;
+ }
}
/*
* Initialize readahead param cache
@@ -1981,35 +1989,38 @@ nfsd_racache_init(int cache_size)
int i;
int j = 0;
int nperbucket;
+ struct raparms **raparm = NULL;
- if (raparml)
+ if (raparm_hash[0].pb_head)
return 0;
- if (cache_size < 2*RAPARM_HASH_SIZE)
- cache_size = 2*RAPARM_HASH_SIZE;
- raparml = kcalloc(cache_size, sizeof(struct raparms), GFP_KERNEL);
-
- if (!raparml) {
- printk(KERN_WARNING
- "nfsd: Could not allocate memory read-ahead cache.\n");
- return -ENOMEM;
- }
+ nperbucket = DIV_ROUND_UP(cache_size, RAPARM_HASH_SIZE);
+ if (nperbucket < 2)
+ nperbucket = 2;
+ cache_size = nperbucket * RAPARM_HASH_SIZE;
dprintk("nfsd: allocating %d readahead buffers.\n", cache_size);
- for (i = 0 ; i < RAPARM_HASH_SIZE ; i++) {
- raparm_hash[i].pb_head = NULL;
+
+ for (i = 0; i < RAPARM_HASH_SIZE; i++) {
spin_lock_init(&raparm_hash[i].pb_lock);
- }
- nperbucket = DIV_ROUND_UP(cache_size, RAPARM_HASH_SIZE);
- for (i = 0; i < cache_size - 1; i++) {
- if (i % nperbucket == 0)
- raparm_hash[j++].pb_head = raparml + i;
- if (i % nperbucket < nperbucket-1)
- raparml[i].p_next = raparml + i + 1;
+
+ raparm = &raparm_hash[i].pb_head;
+ for (j = 0; j < nperbucket; j++) {
+ *raparm = kzalloc(sizeof(struct raparms), GFP_KERNEL);
+ if (!*raparm)
+ goto out_nomem;
+ raparm = &(*raparm)->p_next;
+ }
+ *raparm = NULL;
}
nfsdstats.ra_size = cache_size;
return 0;
+
+out_nomem:
+ dprintk("nfsd: kmalloc failed, freeing readahead buffers\n");
+ nfsd_racache_shutdown();
+ return -ENOMEM;
}
#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c
index 79ecd281d2cb..3f87d2632947 100644
--- a/fs/proc/nommu.c
+++ b/fs/proc/nommu.c
@@ -52,14 +52,14 @@ int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma)
}
seq_printf(m,
- "%08lx-%08lx %c%c%c%c %08lx %02x:%02x %lu %n",
+ "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n",
vma->vm_start,
vma->vm_end,
flags & VM_READ ? 'r' : '-',
flags & VM_WRITE ? 'w' : '-',
flags & VM_EXEC ? 'x' : '-',
flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p',
- vma->vm_pgoff << PAGE_SHIFT,
+ ((loff_t)vma->vm_pgoff) << PAGE_SHIFT,
MAJOR(dev), MINOR(dev), ino, &len);
if (file) {
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index ded969862960..486b13a9e4e7 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -677,6 +677,7 @@ static int cmdline_read_proc(char *page, char **start, off_t off,
return proc_calc_metrics(page, start, off, count, eof, len);
}
+#ifdef CONFIG_FILE_LOCKING
static int locks_open(struct inode *inode, struct file *filp)
{
return seq_open(filp, &locks_seq_operations);
@@ -688,6 +689,7 @@ static const struct file_operations proc_locks_operations = {
.llseek = seq_lseek,
.release = seq_release,
};
+#endif /* CONFIG_FILE_LOCKING */
static int execdomains_read_proc(char *page, char **start, off_t off,
int count, int *eof, void *data)
@@ -881,7 +883,9 @@ void __init proc_misc_init(void)
#ifdef CONFIG_PRINTK
proc_create("kmsg", S_IRUSR, NULL, &proc_kmsg_operations);
#endif
+#ifdef CONFIG_FILE_LOCKING
proc_create("locks", 0, NULL, &proc_locks_operations);
+#endif
proc_create("devices", 0, NULL, &proc_devinfo_operations);
proc_create("cpuinfo", 0, NULL, &proc_cpuinfo_operations);
#ifdef CONFIG_BLOCK
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 7546a918f790..73d1891ee625 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -219,14 +219,14 @@ static int show_map(struct seq_file *m, void *v)
ino = inode->i_ino;
}
- seq_printf(m, "%08lx-%08lx %c%c%c%c %08lx %02x:%02x %lu %n",
+ seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n",
vma->vm_start,
vma->vm_end,
flags & VM_READ ? 'r' : '-',
flags & VM_WRITE ? 'w' : '-',
flags & VM_EXEC ? 'x' : '-',
flags & VM_MAYSHARE ? 's' : 'p',
- vma->vm_pgoff << PAGE_SHIFT,
+ ((loff_t)vma->vm_pgoff) << PAGE_SHIFT,
MAJOR(dev), MINOR(dev), ino, &len);
/*
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index aedaeba82ae5..4ffcfd2d5ea0 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -85,6 +85,7 @@ static void sysfs_unlink_sibling(struct sysfs_dirent *sd)
/**
* sysfs_get_dentry - get dentry for the given sysfs_dirent
+ * @sb: superblock of the dentry to return
* @sd: sysfs_dirent of interest
*
* Get dentry for @sd. Dentry is looked up if currently not
@@ -97,9 +98,10 @@ static void sysfs_unlink_sibling(struct sysfs_dirent *sd)
* RETURNS:
* Pointer to found dentry on success, ERR_PTR() value on error.
*/
-struct dentry *sysfs_get_dentry(struct sysfs_dirent *sd)
+struct dentry *sysfs_get_dentry(struct super_block *sb,
+ struct sysfs_dirent *sd)
{
- struct dentry *dentry = dget(sysfs_sb->s_root);
+ struct dentry *dentry = dget(sb->s_root);
while (dentry->d_fsdata != sd) {
struct sysfs_dirent *cur;
@@ -636,6 +638,7 @@ struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
return sd;
}
+EXPORT_SYMBOL_GPL(sysfs_get_dirent);
static int create_dir(struct kobject *kobj, struct sysfs_dirent *parent_sd,
const char *name, struct sysfs_dirent **p_sd)
@@ -792,68 +795,177 @@ void sysfs_remove_dir(struct kobject * kobj)
__sysfs_remove_dir(sd);
}
+/**
+ * __sysfs_get_dentry - get dentry for the given sysfs_dirent
+ * @sb: superblock of the dentry to return
+ * @sd: sysfs_dirent of interest
+ *
+ * Get dentry for @sd. Only return a dentry if one currently
+ * exists.
+ *
+ * LOCKING:
+ * Kernel thread context (may sleep)
+ *
+ * RETURNS:
+ * Pointer to found dentry on success, NULL on failure.
+ */
+static struct dentry *__sysfs_get_dentry(struct super_block *sb,
+ struct sysfs_dirent *sd)
+{
+ struct inode *inode;
+ struct dentry *dentry = NULL;
+
+ inode = ilookup5_nowait(sysfs_sb, sd->s_ino, sysfs_ilookup_test, sd);
+ if (inode && !(inode->i_state & I_NEW)) {
+ struct dentry *alias;
+ spin_lock(&dcache_lock);
+ list_for_each_entry(alias, &inode->i_dentry, d_alias) {
+ if (!IS_ROOT(alias) && d_unhashed(alias))
+ continue;
+ if (alias->d_sb != sb)
+ continue;
+ dentry = alias;
+ dget_locked(dentry);
+ break;
+ }
+ spin_unlock(&dcache_lock);
+ }
+ iput(inode);
+ return dentry;
+}
+
+struct sysfs_rename_struct {
+ struct list_head list;
+ struct dentry *old_dentry;
+ struct dentry *new_dentry;
+ struct dentry *old_parent;
+ struct dentry *new_parent;
+};
+
+static void post_rename(struct list_head *head)
+{
+ struct sysfs_rename_struct *srs;
+ while (!list_empty(head)) {
+ srs = list_entry(head->next, struct sysfs_rename_struct, list);
+ dput(srs->old_dentry);
+ dput(srs->new_dentry);
+ dput(srs->old_parent);
+ dput(srs->new_parent);
+ list_del(&srs->list);
+ kfree(srs);
+ }
+}
+
+static int prep_rename(struct list_head *head,
+ struct sysfs_dirent *sd, struct sysfs_dirent *new_parent_sd,
+ const char *name)
+{
+ struct sysfs_rename_struct *srs;
+ struct super_block *sb;
+ struct dentry *dentry;
+ int error;
+
+ list_for_each_entry(sb, &sysfs_fs_type.fs_supers, s_instances) {
+ dentry = sysfs_get_dentry(sb, sd);
+ if (dentry == ERR_PTR(-EXDEV))
+ continue;
+ if (IS_ERR(dentry)) {
+ error = PTR_ERR(dentry);
+ goto err_out;
+ }
+
+ srs = kzalloc(sizeof(*srs), GFP_KERNEL);
+ if (!srs) {
+ error = -ENOMEM;
+ dput(dentry);
+ goto err_out;
+ }
+
+ INIT_LIST_HEAD(&srs->list);
+ list_add(head, &srs->list);
+ srs->old_dentry = dentry;
+ srs->old_parent = dget(dentry->d_parent);
+
+ dentry = sysfs_get_dentry(sb, new_parent_sd);
+ if (IS_ERR(dentry)) {
+ error = PTR_ERR(dentry);
+ goto err_out;
+ }
+ srs->new_parent = dentry;
+
+ error = -ENOMEM;
+ dentry = d_alloc_name(srs->new_parent, name);
+ if (!dentry)
+ goto err_out;
+ srs->new_dentry = dentry;
+ }
+ return 0;
+
+err_out:
+ post_rename(head);
+ return error;
+}
+
int sysfs_rename_dir(struct kobject * kobj, const char *new_name)
{
struct sysfs_dirent *sd = kobj->sd;
- struct dentry *parent = NULL;
- struct dentry *old_dentry = NULL, *new_dentry = NULL;
+ struct list_head todo;
+ struct sysfs_rename_struct *srs;
+ struct inode *parent_inode = NULL;
const char *dup_name = NULL;
int error;
+ INIT_LIST_HEAD(&todo);
mutex_lock(&sysfs_rename_mutex);
error = 0;
if (strcmp(sd->s_name, new_name) == 0)
goto out; /* nothing to rename */
- /* get the original dentry */
- old_dentry = sysfs_get_dentry(sd);
- if (IS_ERR(old_dentry)) {
- error = PTR_ERR(old_dentry);
- old_dentry = NULL;
- goto out;
- }
+ sysfs_grab_supers();
+ error = prep_rename(&todo, sd, sd->s_parent, new_name);
+ if (error)
+ goto out_release;
- parent = old_dentry->d_parent;
+ error = -ENOMEM;
+ mutex_lock(&sysfs_mutex);
+ parent_inode = sysfs_get_inode(sd->s_parent);
+ mutex_unlock(&sysfs_mutex);
+ if (!parent_inode)
+ goto out_release;
- /* lock parent and get dentry for new name */
- mutex_lock(&parent->d_inode->i_mutex);
+ mutex_lock(&parent_inode->i_mutex);
mutex_lock(&sysfs_mutex);
error = -EEXIST;
if (sysfs_find_dirent(sd->s_parent, new_name))
goto out_unlock;
- error = -ENOMEM;
- new_dentry = d_alloc_name(parent, new_name);
- if (!new_dentry)
- goto out_unlock;
-
- /* rename kobject and sysfs_dirent */
+ /* rename sysfs_dirent */
error = -ENOMEM;
new_name = dup_name = kstrdup(new_name, GFP_KERNEL);
if (!new_name)
goto out_unlock;
- error = kobject_set_name(kobj, "%s", new_name);
- if (error)
- goto out_unlock;
-
dup_name = sd->s_name;
sd->s_name = new_name;
/* rename */
- d_add(new_dentry, NULL);
- d_move(old_dentry, new_dentry);
+ list_for_each_entry(srs, &todo, list) {
+ d_add(srs->new_dentry, NULL);
+ d_move(srs->old_dentry, srs->new_dentry);
+ }
error = 0;
- out_unlock:
+out_unlock:
mutex_unlock(&sysfs_mutex);
- mutex_unlock(&parent->d_inode->i_mutex);
+ mutex_unlock(&parent_inode->i_mutex);
kfree(dup_name);
- dput(old_dentry);
- dput(new_dentry);
- out:
+out_release:
+ iput(parent_inode);
+ post_rename(&todo);
+ sysfs_release_supers();
+out:
mutex_unlock(&sysfs_rename_mutex);
return error;
}
@@ -862,10 +974,12 @@ int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent_kobj)
{
struct sysfs_dirent *sd = kobj->sd;
struct sysfs_dirent *new_parent_sd;
- struct dentry *old_parent, *new_parent = NULL;
- struct dentry *old_dentry = NULL, *new_dentry = NULL;
+ struct list_head todo;
+ struct sysfs_rename_struct *srs;
+ struct inode *old_parent_inode = NULL, *new_parent_inode = NULL;
int error;
+ INIT_LIST_HEAD(&todo);
mutex_lock(&sysfs_rename_mutex);
BUG_ON(!sd->s_parent);
new_parent_sd = new_parent_kobj->sd ? new_parent_kobj->sd : &sysfs_root;
@@ -874,26 +988,29 @@ int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent_kobj)
if (sd->s_parent == new_parent_sd)
goto out; /* nothing to move */
- /* get dentries */
- old_dentry = sysfs_get_dentry(sd);
- if (IS_ERR(old_dentry)) {
- error = PTR_ERR(old_dentry);
- old_dentry = NULL;
- goto out;
- }
- old_parent = old_dentry->d_parent;
+ sysfs_grab_supers();
+ error = prep_rename(&todo, sd, new_parent_sd, sd->s_name);
+ if (error)
+ goto out_release;
- new_parent = sysfs_get_dentry(new_parent_sd);
- if (IS_ERR(new_parent)) {
- error = PTR_ERR(new_parent);
- new_parent = NULL;
- goto out;
- }
+ error = -ENOMEM;
+ mutex_lock(&sysfs_mutex);
+ old_parent_inode = sysfs_get_inode(sd->s_parent);
+ mutex_unlock(&sysfs_mutex);
+ if (!old_parent_inode)
+ goto out_release;
+
+ error = -ENOMEM;
+ mutex_lock(&sysfs_mutex);
+ new_parent_inode = sysfs_get_inode(new_parent_sd);
+ mutex_unlock(&sysfs_mutex);
+ if (!new_parent_inode)
+ goto out_release;
again:
- mutex_lock(&old_parent->d_inode->i_mutex);
- if (!mutex_trylock(&new_parent->d_inode->i_mutex)) {
- mutex_unlock(&old_parent->d_inode->i_mutex);
+ mutex_lock(&old_parent_inode->i_mutex);
+ if (!mutex_trylock(&new_parent_inode->i_mutex)) {
+ mutex_unlock(&old_parent_inode->i_mutex);
goto again;
}
mutex_lock(&sysfs_mutex);
@@ -902,14 +1019,11 @@ again:
if (sysfs_find_dirent(new_parent_sd, sd->s_name))
goto out_unlock;
- error = -ENOMEM;
- new_dentry = d_alloc_name(new_parent, sd->s_name);
- if (!new_dentry)
- goto out_unlock;
-
error = 0;
- d_add(new_dentry, NULL);
- d_move(old_dentry, new_dentry);
+ list_for_each_entry(srs, &todo, list) {
+ d_add(srs->new_dentry, NULL);
+ d_move(srs->old_dentry, srs->new_dentry);
+ }
/* Remove from old parent's list and insert into new parent's list. */
sysfs_unlink_sibling(sd);
@@ -918,14 +1032,17 @@ again:
sd->s_parent = new_parent_sd;
sysfs_link_sibling(sd);
- out_unlock:
+out_unlock:
mutex_unlock(&sysfs_mutex);
- mutex_unlock(&new_parent->d_inode->i_mutex);
- mutex_unlock(&old_parent->d_inode->i_mutex);
- out:
- dput(new_parent);
- dput(old_dentry);
- dput(new_dentry);
+ mutex_unlock(&new_parent_inode->i_mutex);
+ mutex_unlock(&old_parent_inode->i_mutex);
+
+out_release:
+ iput(new_parent_inode);
+ iput(old_parent_inode);
+ post_rename(&todo);
+ sysfs_release_supers();
+out:
mutex_unlock(&sysfs_rename_mutex);
return error;
}
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index c9e4e5091da1..61c34768e7b2 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -19,10 +19,18 @@
#include <linux/poll.h>
#include <linux/list.h>
#include <linux/mutex.h>
+#include <linux/limits.h>
#include <asm/uaccess.h>
#include "sysfs.h"
+/* used in crash dumps to help with debugging */
+static char last_sysfs_file[PATH_MAX];
+void sysfs_printk_last_file(void)
+{
+ printk(KERN_EMERG "last sysfs file: %s\n", last_sysfs_file);
+}
+
/*
* There's one sysfs_buffer for each open file and one
* sysfs_open_dirent for each sysfs_dirent with one or more open
@@ -328,6 +336,11 @@ static int sysfs_open_file(struct inode *inode, struct file *file)
struct sysfs_buffer *buffer;
struct sysfs_ops *ops;
int error = -EACCES;
+ char *p;
+
+ p = d_path(&file->f_path, last_sysfs_file, sizeof(last_sysfs_file));
+ if (p)
+ memmove(last_sysfs_file, p, strlen(p) + 1);
/* need attr_sd for attr and ops, its parent for kobj */
if (!sysfs_get_active_two(attr_sd))
@@ -440,6 +453,22 @@ static unsigned int sysfs_poll(struct file *filp, poll_table *wait)
return POLLERR|POLLPRI;
}
+void sysfs_notify_dirent(struct sysfs_dirent *sd)
+{
+ struct sysfs_open_dirent *od;
+
+ spin_lock(&sysfs_open_dirent_lock);
+
+ od = sd->s_attr.open;
+ if (od) {
+ atomic_inc(&od->event);
+ wake_up_interruptible(&od->poll);
+ }
+
+ spin_unlock(&sysfs_open_dirent_lock);
+}
+EXPORT_SYMBOL_GPL(sysfs_notify_dirent);
+
void sysfs_notify(struct kobject *k, char *dir, char *attr)
{
struct sysfs_dirent *sd = k->sd;
@@ -450,19 +479,8 @@ void sysfs_notify(struct kobject *k, char *dir, char *attr)
sd = sysfs_find_dirent(sd, dir);
if (sd && attr)
sd = sysfs_find_dirent(sd, attr);
- if (sd) {
- struct sysfs_open_dirent *od;
-
- spin_lock(&sysfs_open_dirent_lock);
-
- od = sd->s_attr.open;
- if (od) {
- atomic_inc(&od->event);
- wake_up_interruptible(&od->poll);
- }
-
- spin_unlock(&sysfs_open_dirent_lock);
- }
+ if (sd)
+ sysfs_notify_dirent(sd);
mutex_unlock(&sysfs_mutex);
}
@@ -560,8 +578,8 @@ EXPORT_SYMBOL_GPL(sysfs_add_file_to_group);
int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
{
struct sysfs_dirent *victim_sd = NULL;
- struct dentry *victim = NULL;
- struct inode * inode;
+ struct super_block *sb;
+ struct inode * inode = NULL;
struct iattr newattrs;
int rc;
@@ -570,34 +588,42 @@ int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
if (!victim_sd)
goto out;
- mutex_lock(&sysfs_rename_mutex);
- victim = sysfs_get_dentry(victim_sd);
- mutex_unlock(&sysfs_rename_mutex);
- if (IS_ERR(victim)) {
- rc = PTR_ERR(victim);
- victim = NULL;
- goto out;
- }
-
- inode = victim->d_inode;
+ rc = -ENOENT;
+ mutex_lock(&sysfs_mutex);
+ inode = sysfs_get_inode(victim_sd);
+ mutex_unlock(&sysfs_mutex);
+ if (!inode)
+ goto out;
+ mutex_lock(&sysfs_rename_mutex);
+ sysfs_grab_supers();
mutex_lock(&inode->i_mutex);
newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
newattrs.ia_ctime = current_fs_time(inode->i_sb);
- rc = sysfs_setattr(victim, &newattrs);
+ rc = sysfs_sd_setattr(victim_sd, inode, &newattrs);
+ if (rc)
+ goto out_unlock;
+
+ list_for_each_entry(sb, &sysfs_fs_type.fs_supers, s_instances) {
+ /* Ignore it when the dentry does not exist on the
+ * target superblock.
+ */
+ struct dentry * victim = sysfs_get_dentry(sb, victim_sd);
+ if (IS_ERR(victim))
+ continue;
- if (rc == 0) {
fsnotify_change(victim, newattrs.ia_valid);
- mutex_lock(&sysfs_mutex);
- victim_sd->s_mode = newattrs.ia_mode;
- mutex_unlock(&sysfs_mutex);
+ dput(victim);
}
+ out_unlock:
mutex_unlock(&inode->i_mutex);
+ sysfs_release_supers();
+ mutex_unlock(&sysfs_rename_mutex);
out:
- dput(victim);
+ iput(inode);
sysfs_put(victim_sd);
return rc;
}
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index eb53c632f856..80f8fd4b2f92 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -42,10 +42,9 @@ int __init sysfs_inode_init(void)
return bdi_init(&sysfs_backing_dev_info);
}
-int sysfs_setattr(struct dentry * dentry, struct iattr * iattr)
+int sysfs_sd_setattr(struct sysfs_dirent *sd, struct inode *inode,
+ struct iattr * iattr)
{
- struct inode * inode = dentry->d_inode;
- struct sysfs_dirent * sd = dentry->d_fsdata;
struct iattr * sd_iattr;
unsigned int ia_valid = iattr->ia_valid;
int error;
@@ -55,10 +54,6 @@ int sysfs_setattr(struct dentry * dentry, struct iattr * iattr)
sd_iattr = sd->s_iattr;
- error = inode_change_ok(inode, iattr);
- if (error)
- return error;
-
iattr->ia_valid &= ~ATTR_SIZE; /* ignore size changes */
error = inode_setattr(inode, iattr);
@@ -104,6 +99,20 @@ int sysfs_setattr(struct dentry * dentry, struct iattr * iattr)
return error;
}
+int sysfs_setattr(struct dentry *dentry, struct iattr *iattr)
+{
+ struct inode * inode = dentry->d_inode;
+ struct sysfs_dirent * sd = dentry->d_fsdata;
+ int error;
+
+ error = inode_change_ok(inode, iattr);
+ if (error)
+ return error;
+
+ return sysfs_sd_setattr(sd, inode, iattr);
+}
+
+
static inline void set_default_inode_attr(struct inode * inode, mode_t mode)
{
inode->i_mode = mode;
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index 14f0023984d7..6ebda1a40918 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -16,6 +16,7 @@
#include <linux/mount.h>
#include <linux/pagemap.h>
#include <linux/init.h>
+#include <linux/module.h>
#include "sysfs.h"
@@ -41,47 +42,110 @@ struct sysfs_dirent sysfs_root = {
static int sysfs_fill_super(struct super_block *sb, void *data, int silent)
{
- struct inode *inode;
- struct dentry *root;
+ struct sysfs_super_info *info = NULL;
+ struct inode *inode = NULL;
+ struct dentry *root = NULL;
+ int error;
sb->s_blocksize = PAGE_CACHE_SIZE;
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
sb->s_magic = SYSFS_MAGIC;
sb->s_op = &sysfs_ops;
sb->s_time_gran = 1;
- sysfs_sb = sb;
+ if (!sysfs_sb)
+ sysfs_sb = sb;
+
+ error = -ENOMEM;
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ goto out_err;
/* get root inode, initialize and unlock it */
+ error = -ENOMEM;
inode = sysfs_get_inode(&sysfs_root);
if (!inode) {
pr_debug("sysfs: could not get root inode\n");
- return -ENOMEM;
+ goto out_err;
}
/* instantiate and link root dentry */
+ error = -ENOMEM;
root = d_alloc_root(inode);
if (!root) {
pr_debug("%s: could not get root dentry!\n",__func__);
- iput(inode);
- return -ENOMEM;
+ goto out_err;
}
root->d_fsdata = &sysfs_root;
sb->s_root = root;
+ sb->s_fs_info = info;
return 0;
+
+out_err:
+ dput(root);
+ iput(inode);
+ kfree(info);
+ if (sysfs_sb == sb)
+ sysfs_sb = NULL;
+ return error;
}
static int sysfs_get_sb(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
- return get_sb_single(fs_type, flags, data, sysfs_fill_super, mnt);
+ int rc;
+ mutex_lock(&sysfs_rename_mutex);
+ rc = get_sb_single(fs_type, flags, data, sysfs_fill_super, mnt);
+ mutex_unlock(&sysfs_rename_mutex);
+ return rc;
}
-static struct file_system_type sysfs_fs_type = {
+struct file_system_type sysfs_fs_type = {
.name = "sysfs",
.get_sb = sysfs_get_sb,
.kill_sb = kill_anon_super,
};
+void sysfs_grab_supers(void)
+{
+ /* must hold sysfs_rename_mutex */
+ struct super_block *sb;
+ /* Loop until I have taken s_umount on all sysfs superblocks */
+restart:
+ spin_lock(&sb_lock);
+ list_for_each_entry(sb, &sysfs_fs_type.fs_supers, s_instances) {
+ if (sysfs_info(sb)->grabbed)
+ continue;
+ /* Wait for unmount activity to complete. */
+ if (sb->s_count < S_BIAS) {
+ sb->s_count += 1;
+ spin_unlock(&sb_lock);
+ down_read(&sb->s_umount);
+ drop_super(sb);
+ goto restart;
+ }
+ atomic_inc(&sb->s_active);
+ sysfs_info(sb)->grabbed = 1;
+ }
+ spin_unlock(&sb_lock);
+}
+
+void sysfs_release_supers(void)
+{
+ /* must hold sysfs_rename_mutex */
+ struct super_block *sb;
+restart:
+ spin_lock(&sb_lock);
+ list_for_each_entry(sb, &sysfs_fs_type.fs_supers, s_instances) {
+ if (!sysfs_info(sb)->grabbed)
+ continue;
+ sysfs_info(sb)->grabbed = 0;
+ spin_unlock(&sb_lock);
+ deactivate_super(sb);
+ goto restart;
+ }
+ spin_unlock(&sb_lock);
+}
+
int __init sysfs_init(void)
{
int err = -ENOMEM;
@@ -115,3 +179,17 @@ out_err:
sysfs_dir_cachep = NULL;
goto out;
}
+
+#undef sysfs_get
+struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd)
+{
+ return __sysfs_get(sd);
+}
+EXPORT_SYMBOL_GPL(sysfs_get);
+
+#undef sysfs_put
+void sysfs_put(struct sysfs_dirent *sd)
+{
+ __sysfs_put(sd);
+}
+EXPORT_SYMBOL_GPL(sysfs_put);
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index a5db496f71c7..f0e5ecb38b6e 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -85,12 +85,22 @@ struct sysfs_addrm_cxt {
int cnt;
};
+struct sysfs_super_info {
+ int grabbed;
+};
+
+#define sysfs_info(SB) ((struct sysfs_super_info *)(SB)->s_fs_info)
+
/*
* mount.c
*/
extern struct sysfs_dirent sysfs_root;
extern struct super_block *sysfs_sb;
extern struct kmem_cache *sysfs_dir_cachep;
+extern struct file_system_type sysfs_fs_type;
+
+void sysfs_grab_supers(void);
+void sysfs_release_supers(void);
/*
* dir.c
@@ -102,7 +112,8 @@ extern spinlock_t sysfs_assoc_lock;
extern const struct file_operations sysfs_dir_operations;
extern const struct inode_operations sysfs_dir_inode_operations;
-struct dentry *sysfs_get_dentry(struct sysfs_dirent *sd);
+struct dentry *sysfs_get_dentry(struct super_block *sb,
+ struct sysfs_dirent *sd);
struct sysfs_dirent *sysfs_get_active_two(struct sysfs_dirent *sd);
void sysfs_put_active_two(struct sysfs_dirent *sd);
void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt,
@@ -124,7 +135,7 @@ int sysfs_create_subdir(struct kobject *kobj, const char *name,
struct sysfs_dirent **p_sd);
void sysfs_remove_subdir(struct sysfs_dirent *sd);
-static inline struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd)
+static inline struct sysfs_dirent *__sysfs_get(struct sysfs_dirent *sd)
{
if (sd) {
WARN_ON(!atomic_read(&sd->s_count));
@@ -132,17 +143,20 @@ static inline struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd)
}
return sd;
}
+#define sysfs_get(sd) __sysfs_get(sd)
-static inline void sysfs_put(struct sysfs_dirent *sd)
+static inline void __sysfs_put(struct sysfs_dirent *sd)
{
if (sd && atomic_dec_and_test(&sd->s_count))
release_sysfs_dirent(sd);
}
+#define sysfs_put(sd) __sysfs_put(sd)
/*
* inode.c
*/
struct inode *sysfs_get_inode(struct sysfs_dirent *sd);
+int sysfs_sd_setattr(struct sysfs_dirent *sd, struct inode *inode, struct iattr *iattr);
int sysfs_setattr(struct dentry *dentry, struct iattr *iattr);
int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const char *name);
int sysfs_inode_init(void);
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 73c65f19e549..7d4bdfdd7853 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -1815,8 +1815,17 @@ xfs_fs_get_sb(
void *data,
struct vfsmount *mnt)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super,
+ int error;
+
+ error = get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super,
mnt);
+ if (!error) {
+ xfs_mount_t *mp = XFS_M(mnt->mnt_sb);
+
+ mp->m_vfsmount = mnt;
+ }
+
+ return error;
}
static struct super_operations xfs_super_operations = {
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index f3c1024b1241..64116b58329c 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -341,6 +341,7 @@ typedef struct xfs_mount {
spinlock_t m_sync_lock; /* work item list lock */
int m_sync_seq; /* sync thread generation no. */
wait_queue_head_t m_wait_single_sync_task;
+ struct vfsmount *m_vfsmount;
} xfs_mount_t;
/*
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-06 21:04:24 +0000