#include "../afs/sysincludes.h"
#include "../afs/afsincludes.h"
#include "../afs/afs_stats.h"
+#include "../afs/afs_osidnlc.h"
#include "../h/mm.h"
#include "../h/pagemap.h"
#if defined(AFS_LINUX24_ENV)
#endif
extern struct vcache *afs_globalVp;
+extern afs_rwlock_t afs_xvcache;
extern struct dentry_operations *afs_dops;
#if defined(AFS_LINUX24_ENV)
loff_t *offp)
{
ssize_t code;
- struct vcache *vcp = (struct vcache*)fp->f_dentry->d_inode;
+ struct vcache *vcp = ITOAFS(fp->f_dentry->d_inode);
cred_t *credp = crref();
struct vrequest treq;
{
ssize_t code = 0;
int code2;
- struct vcache *vcp = (struct vcache *)fp->f_dentry->d_inode;
+ struct vcache *vcp = ITOAFS(fp->f_dentry->d_inode);
struct vrequest treq;
cred_t *credp = crref();
void *dirbuf, filldir_t filldir)
{
extern struct DirEntry * afs_dir_GetBlob();
- struct vcache *avc = (struct vcache*)FILE_INODE(fp);
+ struct vcache *avc = ITOAFS(FILE_INODE(fp));
struct vrequest treq;
register struct dcache *tdc;
int code;
int len;
afs_size_t origOffset, tlen;
cred_t *credp = crref();
+ struct afs_fakestat_state fakestat;
AFS_GLOCK();
AFS_STATCNT(afs_readdir);
return -code;
}
+ afs_InitFakeStat(&fakestat);
+ code = afs_EvalFakeStat(&avc, &fakestat, &treq);
+ if (code) {
+ afs_PutFakeStat(&fakestat);
+ AFS_GUNLOCK();
+ return -code;
+ }
+
/* update the cache entry */
tagain:
code = afs_VerifyVCache(avc, &treq);
if (code) {
+ afs_PutFakeStat(&fakestat);
AFS_GUNLOCK();
return -code;
}
tdc = afs_GetDCache(avc, (afs_size_t) 0, &treq, &origOffset, &tlen, 1);
len = tlen;
if (!tdc) {
+ afs_PutFakeStat(&fakestat);
AFS_GUNLOCK();
return -ENOENT;
}
ObtainReadLock(&avc->lock);
+ ObtainReadLock(&tdc->lock);
/*
* Make sure that the data in the cache is current. There are two
* cases we need to worry about:
* 2. The cache data is no longer valid
*/
while ((avc->states & CStatd)
- && (tdc->flags & DFFetching)
+ && (tdc->dflags & DFFetching)
&& hsame(avc->m.DataVersion, tdc->f.versionNo)) {
- tdc->flags |= DFWaiting;
+ ReleaseReadLock(&tdc->lock);
ReleaseReadLock(&avc->lock);
afs_osi_Sleep(&tdc->validPos);
ObtainReadLock(&avc->lock);
+ ObtainReadLock(&tdc->lock);
}
if (!(avc->states & CStatd)
|| !hsame(avc->m.DataVersion, tdc->f.versionNo)) {
+ ReleaseReadLock(&tdc->lock);
ReleaseReadLock(&avc->lock);
afs_PutDCache(tdc);
goto tagain;
afid.Fid.Unique=ntohl(de->fid.vunique);
if ((avc->states & CForeign) == 0 &&
(ntohl(de->fid.vnode) & 1)) {
+ type=DT_DIR;
} else if ((tvc=afs_FindVCache(&afid,0,0,0,0))) {
if (tvc->mvstat) {
type=DT_DIR;
*/
fp->f_pos = (loff_t)offset;
+ ReleaseReadLock(&tdc->lock);
afs_PutDCache(tdc);
ReleaseReadLock(&avc->lock);
+ afs_PutFakeStat(&fakestat);
AFS_GUNLOCK();
return 0;
}
if (!vmap->vm_file)
return;
- vcp = (struct vcache*)FILE_INODE(vmap->vm_file);
+ vcp = ITOAFS(FILE_INODE(vmap->vm_file));
if (!vcp)
return;
static int afs_linux_mmap(struct file *fp, struct vm_area_struct *vmap)
{
- struct vcache *vcp = (struct vcache*)FILE_INODE(fp);
+ struct vcache *vcp = ITOAFS(FILE_INODE(fp));
cred_t *credp = crref();
struct vrequest treq;
int code;
{
int code = 0;
cred_t *credp = crref();
- struct vcache *vcp = (struct vcache*)ip;
+ struct vcache *vcp = ITOAFS(ip);
AFS_GLOCK();
#ifdef AFS_LINUX24_ENV
#ifdef AFS_LINUX24_ENV
lock_kernel();
#endif
- code = afs_fsync((struct vcache*)ip, credp);
+ code = afs_fsync(ITOAFS(ip), credp);
#ifdef AFS_LINUX24_ENV
unlock_kernel();
#endif
static int afs_linux_lock(struct file *fp, int cmd, struct file_lock *flp)
{
int code = 0;
- struct vcache *vcp = (struct vcache*)FILE_INODE(fp);
+ struct vcache *vcp = ITOAFS(FILE_INODE(fp));
cred_t *credp = crref();
#ifdef AFS_LINUX24_ENV
struct flock64 flock;
AFS_GLOCK();
code = afs_lockctl(vcp, &flock, cmd, credp);
AFS_GUNLOCK();
+
+ /* Convert flock back to Linux's file_lock */
+ flp->fl_type = flock.l_type;
+ flp->fl_pid = flock.l_pid;
+ flp->fl_start = flock.l_start;
+ flp->fl_end = flock.l_start + flock.l_len;
+
crfree(credp);
return -code;
*/
int afs_linux_flush(struct file *fp)
{
- struct vcache *vcp = (struct vcache *)FILE_INODE(fp);
+ struct vcache *vcp = ITOAFS(FILE_INODE(fp));
int code = 0;
cred_t *credp;
int code;
cred_t *credp;
struct vrequest treq;
- struct vcache *vcp = (struct vcache*)dp->d_inode;
+ struct vcache *vcp = ITOAFS(dp->d_inode);
+ struct vcache *rootvp = NULL;
AFS_GLOCK();
+
+ if (afs_fakestat_enable && vcp->mvstat == 1 && vcp->mvid &&
+ (vcp->states & CMValid) && (vcp->states & CStatd)) {
+ ObtainSharedLock(&afs_xvcache, 680);
+ rootvp = afs_FindVCache(vcp->mvid, 0, 0, 0, 0);
+ ReleaseSharedLock(&afs_xvcache);
+ }
+
#ifdef AFS_LINUX24_ENV
lock_kernel();
#endif
/* Make this a fast path (no crref), since it's called so often. */
if (vcp->states & CStatd) {
- if (*dp->d_name.name != '/' && vcp->mvstat == 2) /* root vnode */
+ if (*dp->d_name.name != '/' && vcp->mvstat == 2) /* root vnode */
check_bad_parent(dp); /* check and correct mvid */
- vcache2inode(vcp);
+ if (rootvp)
+ vcache2fakeinode(rootvp, vcp);
+ else
+ vcache2inode(vcp);
#ifdef AFS_LINUX24_ENV
unlock_kernel();
#endif
+ if (rootvp) afs_PutVCache(rootvp, 0);
AFS_GUNLOCK();
return 0;
}
return -code ;
}
+
+/* Validate a dentry. Return 1 if unchanged, 0 if VFS layer should re-evaluate.
+ * In kernels 2.2.10 and above, we are passed an additional flags var which
+ * may have either the LOOKUP_FOLLOW OR LOOKUP_DIRECTORY set in which case
+ * we are advised to follow the entry if it is a link or to make sure that
+ * it is a directory. But since the kernel itself checks these possibilities
+ * later on, we shouldn't have to do it until later. Perhaps in the future..
+ */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,10)
+static int afs_linux_dentry_revalidate(struct dentry *dp, int flags)
+#else
+static int afs_linux_dentry_revalidate(struct dentry *dp)
+#endif
+{
+ char *name;
+ cred_t *credp = crref();
+ struct vrequest treq;
+ struct vcache *lookupvcp = NULL;
+ int code, bad_dentry = 1;
+ struct sysname_info sysState;
+ struct vcache *vcp = ITOAFS(dp->d_inode);
+ struct vcache *parentvcp = ITOAFS(dp->d_parent->d_inode);
+
+ AFS_GLOCK();
+
+ sysState.allocked = 0;
+
+ /* If it's a negative dentry, then there's nothing to do. */
+ if (!vcp || !parentvcp)
+ goto done;
+
+ /* If it is the AFS root, then there's no chance it needs
+ revalidating */
+ if (vcp == afs_globalVp) {
+ bad_dentry = 0;
+ goto done;
+ }
+
+ if (code = afs_InitReq(&treq, credp))
+ goto done;
+
+ Check_AtSys(parentvcp, dp->d_name.name, &sysState, &treq);
+ name = sysState.name;
+
+ /* First try looking up the DNLC */
+ if (lookupvcp = osi_dnlc_lookup(parentvcp, name, WRITE_LOCK)) {
+ /* Verify that the dentry does not point to an old inode */
+ if (vcp != lookupvcp)
+ goto done;
+ /* Check and correct mvid */
+ if (*name != '/' && vcp->mvstat == 2)
+ check_bad_parent(dp);
+ vcache2inode(vcp);
+ bad_dentry = 0;
+ goto done;
+ }
+
+ /* A DNLC lookup failure cannot be trusted. Try a real lookup */
+ code = afs_lookup(parentvcp, name, &lookupvcp, credp);
+
+ /* Verify that the dentry does not point to an old inode */
+ if (vcp != lookupvcp)
+ goto done;
+
+ bad_dentry = 0;
+
+done:
+ /* Clean up */
+ if (lookupvcp)
+ afs_PutVCache(lookupvcp, WRITE_LOCK);
+ if (sysState.allocked)
+ osi_FreeLargeSpace(name);
+
+ AFS_GUNLOCK();
+ crfree(credp);
+
+ if (bad_dentry) {
+ shrink_dcache_parent(dp);
+ d_drop(dp);
+ }
+
+ return !bad_dentry;
+}
+
+#ifdef notdef
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,10)
static int afs_linux_dentry_revalidate(struct dentry *dp, int flags)
#else
int code;
cred_t *credp;
struct vrequest treq;
- struct inode *ip = (struct inode *)dp->d_inode;
+ struct inode *ip = AFSTOI(dp->d_inode);
unsigned long timeout = 3*HZ; /* 3 seconds */
+ if (!ip)
+ printk("negative dentry: %s\n", dp->d_name.name);
+
if (!(flags & LOOKUP_CONTINUE)) {
long diff = CURRENT_TIME - dp->d_parent->d_inode->i_mtime;
out_bad:
return 0;
}
+#endif
/* afs_dentry_iput */
static void afs_dentry_iput(struct dentry *dp, struct inode *ip)
{
+ if (ICL_SETACTIVE(afs_iclSetp)) {
+ AFS_GLOCK();
+ afs_Trace3(afs_iclSetp, CM_TRACE_DENTRYIPUT,
+ ICL_TYPE_POINTER, ip,
+ ICL_TYPE_STRING, dp->d_parent->d_name.name,
+ ICL_TYPE_STRING, dp->d_name.name);
+ AFS_GUNLOCK();
+ }
+
osi_iput(ip);
}
+static int afs_dentry_delete(struct dentry *dp)
+{
+ if (ICL_SETACTIVE(afs_iclSetp)) {
+ AFS_GLOCK();
+ afs_Trace3(afs_iclSetp, CM_TRACE_DENTRYDELETE, ICL_TYPE_POINTER,
+ dp->d_inode, ICL_TYPE_STRING, dp->d_parent->d_name.name,
+ ICL_TYPE_STRING, dp->d_name.name);
+ AFS_GUNLOCK();
+ }
+
+ if (dp->d_inode && (ITOAFS(dp->d_inode)->states & CUnlinked))
+ return 1; /* bad inode? */
+
+ return 0;
+}
+
#if defined(AFS_LINUX24_ENV)
struct dentry_operations afs_dentry_operations = {
d_revalidate: afs_linux_dentry_revalidate,
d_iput: afs_dentry_iput,
+ d_delete: afs_dentry_delete,
};
struct dentry_operations *afs_dops = &afs_dentry_operations;
#else
afs_linux_dentry_revalidate, /* d_validate(struct dentry *) */
NULL, /* d_hash */
NULL, /* d_compare */
- NULL, /* d_delete(struct dentry *) */
+ afs_dentry_delete, /* d_delete(struct dentry *) */
NULL, /* d_release(struct dentry *) */
afs_dentry_iput /* d_iput(struct dentry *, struct inode *) */
};
vattr.va_mode = mode;
AFS_GLOCK();
- code = afs_create((struct vcache*)dip, name, &vattr, NONEXCL, mode,
+ code = afs_create(ITOAFS(dip), name, &vattr, NONEXCL, mode,
(struct vcache**)&ip, credp);
if (!code) {
struct vcache *vcp=NULL;
const char *comp = dp->d_name.name;
AFS_GLOCK();
- code = afs_lookup((struct vcache *)dip, comp, &vcp, credp);
+ code = afs_lookup(ITOAFS(dip), comp, &vcp, credp);
if (vcp) {
- struct inode *ip = (struct inode*)vcp;
+ struct inode *ip = AFSTOI(vcp);
/* Reset ops if symlink or directory. */
#if defined(AFS_LINUX24_ENV)
if (S_ISREG(ip->i_mode)) {
ip->i_data.a_ops = &afs_symlink_aops;
ip->i_mapping = &ip->i_data;
} else
- printk("afs_linux_lookup: FIXME\n");
+ printk("afs_linux_lookup: ip->i_mode 0x%x dp->d_name.name %s code %d\n", ip->i_mode, dp->d_name.name, code);
#else
if (S_ISDIR(ip->i_mode))
ip->i_op = &afs_dir_iops;
else if (S_ISLNK(ip->i_mode))
ip->i_op = &afs_symlink_iops;
#endif
- }
+ }
dp->d_time = jiffies;
dp->d_op = afs_dops;
- d_add(dp, (struct inode*)vcp);
+ d_add(dp, AFSTOI(vcp));
AFS_GUNLOCK();
crfree(credp);
d_drop(newdp);
AFS_GLOCK();
- code = afs_link((struct vcache*)oldip, (struct vcache*)dip, name, credp);
+ code = afs_link(ITOAFS(oldip), ITOAFS(dip), name, credp);
AFS_GUNLOCK();
crfree(credp);
int code;
cred_t *credp = crref();
const char *name = dp->d_name.name;
- int putback = 0;
-
- if (!list_empty(&dp->d_hash)) {
- d_drop(dp);
- /* Install a definite non-existence if we're the only user. */
-#if defined(AFS_LINUX24_ENV)
- if (atomic_read(&dp->d_count) == 1)
-#else
- if (dp->d_count == 1)
-#endif
- putback = 1;
- }
AFS_GLOCK();
- code = afs_remove((struct vcache*)dip, name, credp);
+ code = afs_remove(ITOAFS(dip), name, credp);
AFS_GUNLOCK();
- if (!code) {
- d_delete(dp);
- if (putback) {
- dp->d_time = jiffies;
- d_add(dp, NULL); /* means definitely does _not_ exist */
- }
- }
+ if (!code)
+ d_drop(dp);
crfree(credp);
return -code;
}
AFS_GLOCK();
VATTR_NULL(&vattr);
- code = afs_symlink((struct vcache*)dip, name, &vattr, target, credp);
+ code = afs_symlink(ITOAFS(dip), name, &vattr, target, credp);
AFS_GUNLOCK();
crfree(credp);
return -code;
VATTR_NULL(&vattr);
vattr.va_mask = ATTR_MODE;
vattr.va_mode = mode;
- code = afs_mkdir((struct vcache*)dip, name, &vattr, &tvcp, credp);
+ code = afs_mkdir(ITOAFS(dip), name, &vattr, &tvcp, credp);
if (tvcp) {
tvcp->v.v_op = &afs_dir_iops;
#endif
dp->d_op = afs_dops;
dp->d_time = jiffies;
- d_instantiate(dp, (struct inode*)tvcp);
+ d_instantiate(dp, AFSTOI(tvcp));
}
+
AFS_GUNLOCK();
crfree(credp);
return -code;
const char *name = dp->d_name.name;
AFS_GLOCK();
- code = afs_rmdir((struct vcache*)dip, name, credp);
+ code = afs_rmdir(ITOAFS(dip), name, credp);
/* Linux likes to see ENOTEMPTY returned from an rmdir() syscall
* that failed because a directory is not empty. So, we map
}
if (!code) {
- d_delete(dp);
+ d_drop(dp);
}
AFS_GUNLOCK();
d_drop(newdp);
}
AFS_GLOCK();
- code = afs_rename((struct vcache*)oldip, oldname, (struct vcache*)newip,
+ code = afs_rename(ITOAFS(oldip), oldname, ITOAFS(newip),
newname, credp);
AFS_GUNLOCK();
struct iovec iov;
setup_uio(&tuio, &iov, target, (afs_offs_t) 0, maxlen, UIO_READ, seg);
- code = afs_readlink((struct vcache*)ip, &tuio, credp);
+ code = afs_readlink(ITOAFS(ip), &tuio, credp);
crfree(credp);
if (!code)
struct iovec iovec;
struct inode *ip = FILE_INODE(fp);
int cnt = atomic_read(&pp->count);
+ struct vcache *avc = ITOAFS(ip);
AFS_GLOCK();
afs_Trace4(afs_iclSetp, CM_TRACE_READPAGE,
setup_uio(&tuio, &iovec, (char*)address, offset, PAGESIZE,
UIO_READ, AFS_UIOSYS);
- code = afs_rdwr((struct vcache*)ip, &tuio, UIO_READ, 0, credp);
+ code = afs_rdwr(avc, &tuio, UIO_READ, 0, credp);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
unlock_kernel();
#endif
free_page(address);
#endif
+ if (!code && AFS_CHUNKOFFSET(offset) == 0) {
+ struct dcache *tdc;
+ struct vrequest treq;
+
+ code = afs_InitReq(&treq, credp);
+ if (!code && !NBObtainWriteLock(&avc->lock, 534)) {
+ tdc = afs_FindDCache(avc, offset);
+ if (tdc) {
+ if (!(tdc->mflags & DFNextStarted))
+ afs_PrefetchChunk(avc, tdc, credp, &treq);
+ afs_PutDCache(tdc);
+ }
+ ReleaseWriteLock(&avc->lock);
+ }
+ }
+
crfree(credp);
afs_Trace4(afs_iclSetp, CM_TRACE_READPAGE,
ICL_TYPE_POINTER, ip,
if (mode & MAY_EXEC) tmp |= VEXEC;
if (mode & MAY_READ) tmp |= VREAD;
if (mode & MAY_WRITE) tmp |= VWRITE;
- code = afs_access((struct vcache*)ip, tmp, credp);
+ code = afs_access(ITOAFS(ip), tmp, credp);
AFS_GUNLOCK();
crfree(credp);
unsigned long offset,
unsigned int count)
{
- struct vcache *vcp = (struct vcache *) ip;
+ struct vcache *vcp = ITOAFS(ip);
char *buffer;
afs_offs_t base;
int code = 0;
ICL_TYPE_POINTER, pp,
ICL_TYPE_INT32, atomic_read(&pp->count),
ICL_TYPE_INT32, 99999);
+
setup_uio(&tuio, &iovec, buffer, base, count, UIO_WRITE, AFS_UIOSYS);
code = afs_write(vcp, &tuio, f_flags, credp, 0);
vcache2inode(vcp);
+ if (!code && afs_stats_cmperf.cacheCurrDirtyChunks >
+ afs_stats_cmperf.cacheMaxDirtyChunks) {
+ struct vrequest treq;
+
+ ObtainWriteLock(&vcp->lock, 533);
+ if (!afs_InitReq(&treq, credp))
+ code = afs_DoPartialWrite(vcp, &treq);
+ ReleaseWriteLock(&vcp->lock);
+ }
code = code ? -code : count - tuio.uio_resid;
+
afs_Trace4(afs_iclSetp, CM_TRACE_UPDATEPAGE, ICL_TYPE_POINTER, vcp,
ICL_TYPE_POINTER, pp,
ICL_TYPE_INT32, atomic_read(&pp->count),
unsigned long offset,
unsigned int count, int sync)
{
- struct vcache *vcp = (struct vcache *)FILE_INODE(fp);
+ struct vcache *vcp = ITOAFS(FILE_INODE(fp));
u8 *page_addr = (u8*) afs_linux_page_address(pp);
int code = 0;
cred_t *credp;
git://git.openafs.org / openafs.git / blobdiff