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-rw-r--r--fs/cifs/cache.c83
-rw-r--r--fs/cifs/cifsfs.c7
-rw-r--r--fs/cifs/cifsglob.h3
-rw-r--r--fs/cifs/file.c6
-rw-r--r--fs/cifs/fscache.c68
-rw-r--r--fs/cifs/fscache.h12
-rw-r--r--fs/cifs/inode.c4
7 files changed, 183 insertions, 0 deletions
diff --git a/fs/cifs/cache.c b/fs/cifs/cache.c
index 15532abdac1..b2649cfd3a0 100644
--- a/fs/cifs/cache.c
+++ b/fs/cifs/cache.c
@@ -215,3 +215,86 @@ const struct fscache_cookie_def cifs_fscache_super_index_def = {
.check_aux = cifs_fscache_super_check_aux,
};
+/*
+ * Auxiliary data attached to CIFS inode within the cache
+ */
+struct cifs_fscache_inode_auxdata {
+ struct timespec last_write_time;
+ struct timespec last_change_time;
+ u64 eof;
+};
+
+static uint16_t cifs_fscache_inode_get_key(const void *cookie_netfs_data,
+ void *buffer, uint16_t maxbuf)
+{
+ const struct cifsInodeInfo *cifsi = cookie_netfs_data;
+ uint16_t keylen;
+
+ /* use the UniqueId as the key */
+ keylen = sizeof(cifsi->uniqueid);
+ if (keylen > maxbuf)
+ keylen = 0;
+ else
+ memcpy(buffer, &cifsi->uniqueid, keylen);
+
+ return keylen;
+}
+
+static void
+cifs_fscache_inode_get_attr(const void *cookie_netfs_data, uint64_t *size)
+{
+ const struct cifsInodeInfo *cifsi = cookie_netfs_data;
+
+ *size = cifsi->vfs_inode.i_size;
+}
+
+static uint16_t
+cifs_fscache_inode_get_aux(const void *cookie_netfs_data, void *buffer,
+ uint16_t maxbuf)
+{
+ struct cifs_fscache_inode_auxdata auxdata;
+ const struct cifsInodeInfo *cifsi = cookie_netfs_data;
+
+ memset(&auxdata, 0, sizeof(auxdata));
+ auxdata.eof = cifsi->server_eof;
+ auxdata.last_write_time = cifsi->vfs_inode.i_mtime;
+ auxdata.last_change_time = cifsi->vfs_inode.i_ctime;
+
+ if (maxbuf > sizeof(auxdata))
+ maxbuf = sizeof(auxdata);
+
+ memcpy(buffer, &auxdata, maxbuf);
+
+ return maxbuf;
+}
+
+static enum
+fscache_checkaux cifs_fscache_inode_check_aux(void *cookie_netfs_data,
+ const void *data,
+ uint16_t datalen)
+{
+ struct cifs_fscache_inode_auxdata auxdata;
+ struct cifsInodeInfo *cifsi = cookie_netfs_data;
+
+ if (datalen != sizeof(auxdata))
+ return FSCACHE_CHECKAUX_OBSOLETE;
+
+ memset(&auxdata, 0, sizeof(auxdata));
+ auxdata.eof = cifsi->server_eof;
+ auxdata.last_write_time = cifsi->vfs_inode.i_mtime;
+ auxdata.last_change_time = cifsi->vfs_inode.i_ctime;
+
+ if (memcmp(data, &auxdata, datalen) != 0)
+ return FSCACHE_CHECKAUX_OBSOLETE;
+
+ return FSCACHE_CHECKAUX_OKAY;
+}
+
+const struct fscache_cookie_def cifs_fscache_inode_object_def = {
+ .name = "CIFS.uniqueid",
+ .type = FSCACHE_COOKIE_TYPE_DATAFILE,
+ .get_key = cifs_fscache_inode_get_key,
+ .get_attr = cifs_fscache_inode_get_attr,
+ .get_aux = cifs_fscache_inode_get_aux,
+ .check_aux = cifs_fscache_inode_check_aux,
+};
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 24d7f4ab3b6..8a2cf129e53 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -330,6 +330,12 @@ cifs_destroy_inode(struct inode *inode)
}
static void
+cifs_clear_inode(struct inode *inode)
+{
+ cifs_fscache_release_inode_cookie(inode);
+}
+
+static void
cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server)
{
seq_printf(s, ",addr=");
@@ -490,6 +496,7 @@ static const struct super_operations cifs_super_ops = {
.alloc_inode = cifs_alloc_inode,
.destroy_inode = cifs_destroy_inode,
.drop_inode = cifs_drop_inode,
+ .clear_inode = cifs_clear_inode,
/* .delete_inode = cifs_delete_inode, */ /* Do not need above
function unless later we add lazy close of inodes or unless the
kernel forgets to call us with the same number of releases (closes)
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index a3e403e7e16..9b7cf9aa3a0 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -390,6 +390,9 @@ struct cifsInodeInfo {
bool invalid_mapping:1; /* pagecache is invalid */
u64 server_eof; /* current file size on server */
u64 uniqueid; /* server inode number */
+#ifdef CONFIG_CIFS_FSCACHE
+ struct fscache_cookie *fscache;
+#endif
struct inode vfs_inode;
};
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index b5fb2a0607b..d302d941f9a 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -40,6 +40,7 @@
#include "cifs_unicode.h"
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
+#include "fscache.h"
static inline int cifs_convert_flags(unsigned int flags)
{
@@ -282,6 +283,9 @@ int cifs_open(struct inode *inode, struct file *file)
CIFSSMBClose(xid, tcon, netfid);
rc = -ENOMEM;
}
+
+ cifs_fscache_set_inode_cookie(inode, file);
+
goto out;
} else if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
if (tcon->ses->serverNOS)
@@ -373,6 +377,8 @@ int cifs_open(struct inode *inode, struct file *file)
goto out;
}
+ cifs_fscache_set_inode_cookie(inode, file);
+
if (oplock & CIFS_CREATE_ACTION) {
/* time to set mode which we can not set earlier due to
problems creating new read-only files */
diff --git a/fs/cifs/fscache.c b/fs/cifs/fscache.c
index eba9beb94a4..6c8d96758dd 100644
--- a/fs/cifs/fscache.c
+++ b/fs/cifs/fscache.c
@@ -21,6 +21,7 @@
#include "fscache.h"
#include "cifsglob.h"
#include "cifs_debug.h"
+#include "cifs_fs_sb.h"
void cifs_fscache_get_client_cookie(struct TCP_Server_Info *server)
{
@@ -56,3 +57,70 @@ void cifs_fscache_release_super_cookie(struct cifsTconInfo *tcon)
fscache_relinquish_cookie(tcon->fscache, 0);
tcon->fscache = NULL;
}
+
+static void cifs_fscache_enable_inode_cookie(struct inode *inode)
+{
+ struct cifsInodeInfo *cifsi = CIFS_I(inode);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+
+ if (cifsi->fscache)
+ return;
+
+ cifsi->fscache = fscache_acquire_cookie(cifs_sb->tcon->fscache,
+ &cifs_fscache_inode_object_def,
+ cifsi);
+ cFYI(1, "CIFS: got FH cookie (0x%p/0x%p)",
+ cifs_sb->tcon->fscache, cifsi->fscache);
+}
+
+void cifs_fscache_release_inode_cookie(struct inode *inode)
+{
+ struct cifsInodeInfo *cifsi = CIFS_I(inode);
+
+ if (cifsi->fscache) {
+ cFYI(1, "CIFS releasing inode cookie (0x%p)",
+ cifsi->fscache);
+ fscache_relinquish_cookie(cifsi->fscache, 0);
+ cifsi->fscache = NULL;
+ }
+}
+
+static void cifs_fscache_disable_inode_cookie(struct inode *inode)
+{
+ struct cifsInodeInfo *cifsi = CIFS_I(inode);
+
+ if (cifsi->fscache) {
+ cFYI(1, "CIFS disabling inode cookie (0x%p)",
+ cifsi->fscache);
+ fscache_relinquish_cookie(cifsi->fscache, 1);
+ cifsi->fscache = NULL;
+ }
+}
+
+void cifs_fscache_set_inode_cookie(struct inode *inode, struct file *filp)
+{
+ if ((filp->f_flags & O_ACCMODE) != O_RDONLY)
+ cifs_fscache_disable_inode_cookie(inode);
+ else {
+ cifs_fscache_enable_inode_cookie(inode);
+ cFYI(1, "CIFS: fscache inode cookie set");
+ }
+}
+
+void cifs_fscache_reset_inode_cookie(struct inode *inode)
+{
+ struct cifsInodeInfo *cifsi = CIFS_I(inode);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct fscache_cookie *old = cifsi->fscache;
+
+ if (cifsi->fscache) {
+ /* retire the current fscache cache and get a new one */
+ fscache_relinquish_cookie(cifsi->fscache, 1);
+
+ cifsi->fscache = fscache_acquire_cookie(cifs_sb->tcon->fscache,
+ &cifs_fscache_inode_object_def,
+ cifsi);
+ cFYI(1, "CIFS: new cookie 0x%p oldcookie 0x%p",
+ cifsi->fscache, old);
+ }
+}
diff --git a/fs/cifs/fscache.h b/fs/cifs/fscache.h
index d2ba628b72c..1008f405083 100644
--- a/fs/cifs/fscache.h
+++ b/fs/cifs/fscache.h
@@ -30,6 +30,8 @@
extern struct fscache_netfs cifs_fscache_netfs;
extern const struct fscache_cookie_def cifs_fscache_server_index_def;
extern const struct fscache_cookie_def cifs_fscache_super_index_def;
+extern const struct fscache_cookie_def cifs_fscache_inode_object_def;
+
extern int cifs_fscache_register(void);
extern void cifs_fscache_unregister(void);
@@ -42,6 +44,10 @@ extern void cifs_fscache_release_client_cookie(struct TCP_Server_Info *);
extern void cifs_fscache_get_super_cookie(struct cifsTconInfo *);
extern void cifs_fscache_release_super_cookie(struct cifsTconInfo *);
+extern void cifs_fscache_release_inode_cookie(struct inode *);
+extern void cifs_fscache_set_inode_cookie(struct inode *, struct file *);
+extern void cifs_fscache_reset_inode_cookie(struct inode *);
+
#else /* CONFIG_CIFS_FSCACHE */
static inline int cifs_fscache_register(void) { return 0; }
static inline void cifs_fscache_unregister(void) {}
@@ -54,6 +60,12 @@ static inline void cifs_fscache_get_super_cookie(struct cifsTconInfo *tcon) {}
static inline void
cifs_fscache_release_super_cookie(struct cifsTconInfo *tcon) {}
+static inline void cifs_fscache_release_inode_cookie(struct inode *inode) {}
+static inline void cifs_fscache_set_inode_cookie(struct inode *inode,
+ struct file *filp) {}
+static inline void cifs_fscache_reset_inode_cookie(struct inode *inode) {}
+
+
#endif /* CONFIG_CIFS_FSCACHE */
#endif /* _CIFS_FSCACHE_H */
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index f884cb51622..5a68b92a0f9 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -29,6 +29,7 @@
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
+#include "fscache.h"
static void cifs_set_ops(struct inode *inode, const bool is_dfs_referral)
@@ -776,6 +777,8 @@ retry_iget5_locked:
inode->i_flags |= S_NOATIME | S_NOCMTIME;
if (inode->i_state & I_NEW) {
inode->i_ino = hash;
+ /* initialize per-inode cache cookie pointer */
+ CIFS_I(inode)->fscache = NULL;
unlock_new_inode(inode);
}
}
@@ -1571,6 +1574,7 @@ cifs_invalidate_mapping(struct inode *inode)
cifs_i->write_behind_rc = rc;
}
invalidate_remote_inode(inode);
+ cifs_fscache_reset_inode_cookie(inode);
}
int cifs_revalidate_file(struct file *filp)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 03:35:00 +0000