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-rw-r--r--libglusterfsclient/src/libglusterfsclient-dentry.c68
-rwxr-xr-xlibglusterfsclient/src/libglusterfsclient-internals.h13
-rwxr-xr-xlibglusterfsclient/src/libglusterfsclient.c140
3 files changed, 94 insertions, 127 deletions
diff --git a/libglusterfsclient/src/libglusterfsclient-dentry.c b/libglusterfsclient/src/libglusterfsclient-dentry.c
index 089a2c38c..09820457b 100644
--- a/libglusterfsclient/src/libglusterfsclient-dentry.c
+++ b/libglusterfsclient/src/libglusterfsclient-dentry.c
@@ -91,9 +91,8 @@ strcpy_till (char *dest, const char *dname, char delim)
* return - should never return NULL. should at least return '/' inode.
*/
static inode_t *
-__libgf_client_path_to_parenti (inode_table_t *itable,
- const char *path,
- time_t lookup_timeout,
+__libgf_client_path_to_parenti (libglusterfs_client_ctx_t *ctx,
+ inode_table_t *itable, const char *path,
char **reslv)
{
char *resolved_till = NULL;
@@ -104,10 +103,6 @@ __libgf_client_path_to_parenti (inode_table_t *itable,
inode_t *curr = NULL;
inode_t *parent = NULL;
size_t pathlen = 0;
- time_t current, prev;
- libglusterfs_client_inode_ctx_t *inode_ctx = NULL;
- uint64_t ptr = 0;
- int32_t op_ret = 0;
pathlen = STRLEN_0 (path);
resolved_till = CALLOC (1, pathlen);
@@ -126,27 +121,9 @@ __libgf_client_path_to_parenti (inode_table_t *itable,
if (!curr) {
break;
}
-
- op_ret = inode_ctx_get (curr, itable->xl, &ptr);
- if (op_ret == -1) {
- errno = EINVAL;
+ if (!libgf_is_iattr_cache_valid (ctx, curr, NULL,
+ LIBGF_VALIDATE_LOOKUP))
break;
- }
-
- inode_ctx = (libglusterfs_client_inode_ctx_t *)(long)ptr;
- memset (&current, 0, sizeof (current));
- current = time (NULL);
-
- pthread_mutex_lock (&inode_ctx->lock);
- {
- prev = inode_ctx->previous_lookup_time;
- }
- pthread_mutex_unlock (&inode_ctx->lock);
-
- if ((prev < 0)
- || (lookup_timeout < (current - prev))) {
- break;
- }
/* It is OK to append the component even if it is the
last component in the path, because, if 'next_component'
@@ -237,9 +214,6 @@ __do_path_resolve (loc_t *loc, libglusterfs_client_ctx_t *ctx,
loc_t new_loc = {0, };
char *pathname = NULL, *directory = NULL;
char *file = NULL;
- time_t current, prev;
- libglusterfs_client_inode_ctx_t *inode_ctx = NULL;
- uint64_t ptr = 0;
parent = loc->parent;
if (parent) {
@@ -251,9 +225,8 @@ __do_path_resolve (loc_t *loc, libglusterfs_client_ctx_t *ctx,
resolved = strdup (loc->path);
resolved = dirname (resolved);
} else {
- parent = __libgf_client_path_to_parenti (ctx->itable, loc->path,
- ctx->lookup_timeout,
- &resolved);
+ parent = __libgf_client_path_to_parenti (ctx, ctx->itable,
+ loc->path, &resolved);
}
if (parent == NULL) {
@@ -292,29 +265,14 @@ __do_path_resolve (loc_t *loc, libglusterfs_client_ctx_t *ctx,
new_loc.inode = inode_search (ctx->itable, parent->ino, file);
if (new_loc.inode) {
- op_ret = inode_ctx_get (new_loc.inode, ctx->itable->xl,
- &ptr);
- if (op_ret != -1) {
- inode_ctx = (libglusterfs_client_inode_ctx_t *)(long)ptr;
- memset (&current, 0, sizeof (current));
- current = time (NULL);
-
- pthread_mutex_lock (&inode_ctx->lock);
- {
- prev = inode_ctx->previous_lookup_time;
- }
- pthread_mutex_unlock (&inode_ctx->lock);
-
- if ((prev >= 0)
- && (ctx->lookup_timeout
- >= (current - prev))) {
- dentry = dentry_search_for_inode (new_loc.inode,
- parent->ino,
- file);
- }
- }
+ if (libgf_is_iattr_cache_valid (ctx, new_loc.inode,
+ NULL,
+ LIBGF_VALIDATE_LOOKUP))
+ dentry = dentry_search_for_inode (new_loc.inode,
+ parent->ino,
+ file);
}
-
+
if (dentry == NULL) {
op_ret = libgf_client_lookup (ctx, &new_loc, NULL, NULL,
0);
diff --git a/libglusterfsclient/src/libglusterfsclient-internals.h b/libglusterfsclient/src/libglusterfsclient-internals.h
index 40ad6f692..42ce5d4ca 100755
--- a/libglusterfsclient/src/libglusterfsclient-internals.h
+++ b/libglusterfsclient/src/libglusterfsclient-internals.h
@@ -235,5 +235,18 @@ struct vmp_entry {
glusterfs_handle_t handle;
};
+#define LIBGF_UPDATE_LOOKUP 0x1
+#define LIBGF_UPDATE_STAT 0x2
+#define LIBGF_UPDATE_ALL (LIBGF_UPDATE_LOOKUP | LIBGF_UPDATE_STAT)
+
+#define LIBGF_VALIDATE_LOOKUP 0x1
+#define LIBGF_VALIDATE_STAT 0x2
+
+int
+libgf_is_iattr_cache_valid (libglusterfs_client_ctx_t *ctx, inode_t *inode,
+ struct stat *sbuf, int flags);
+
+int
+libgf_update_iattr_cache (inode_t *inode, int flags, struct stat *buf);
#endif
diff --git a/libglusterfsclient/src/libglusterfsclient.c b/libglusterfsclient/src/libglusterfsclient.c
index 993257b96..89e64b2e7 100755
--- a/libglusterfsclient/src/libglusterfsclient.c
+++ b/libglusterfsclient/src/libglusterfsclient.c
@@ -281,10 +281,6 @@ out:
return ictx;
}
-#define LIBGF_UPDATE_LOOKUP 0x1
-#define LIBGF_UPDATE_STAT 0x2
-#define LIBGF_UPDATE_ALL (LIBGF_UPDATE_LOOKUP | LIBGF_UPDATE_STAT)
-
int
libgf_update_iattr_cache (inode_t *inode, int flags, struct stat *buf)
{
@@ -329,6 +325,58 @@ out:
return op_ret;
}
+int
+libgf_is_iattr_cache_valid (libglusterfs_client_ctx_t *ctx, inode_t *inode,
+ struct stat *sbuf, int flags)
+{
+ time_t current = 0;
+ time_t prev = 0;
+ libglusterfs_client_inode_ctx_t *inode_ctx = NULL;
+ int cache_valid = 0;
+ time_t timeout = 0;
+
+ if (inode == NULL)
+ return 0;
+
+ inode_ctx = libgf_get_inode_ctx (inode);
+ pthread_mutex_lock (&inode_ctx->lock);
+ {
+ current = time (NULL);
+ if (flags & LIBGF_VALIDATE_LOOKUP) {
+ prev = inode_ctx->previous_lookup_time;
+ timeout = ctx->lookup_timeout;
+ } else {
+ prev = inode_ctx->previous_stat_time;
+ timeout = ctx->stat_timeout;
+ }
+
+ /* Cache infinely */
+ if (timeout == (time_t)-1) {
+ cache_valid = 1;
+ goto iattr_unlock_out;
+ }
+
+ /* Disable caching completely */
+ if (timeout == 0) {
+ cache_valid = 0;
+ goto iattr_unlock_out;
+ }
+
+ if ((prev > 0) && (timeout >= (current - prev)))
+ cache_valid = 1;
+
+ if (flags & LIBGF_VALIDATE_LOOKUP)
+ goto iattr_unlock_out;
+
+ if ((cache_valid) && (sbuf))
+ *sbuf = inode_ctx->stbuf;
+ }
+iattr_unlock_out:
+ pthread_mutex_unlock (&inode_ctx->lock);
+
+ return cache_valid;
+}
+
int32_t
libgf_client_releasedir (xlator_t *this,
fd_t *fd)
@@ -3658,7 +3706,6 @@ glusterfs_lseek (glusterfs_file_t fd, off_t offset, int whence)
int32_t op_ret = -1;
fd_t *__fd = (fd_t *)fd;
libglusterfs_client_fd_ctx_t *fd_ctx = NULL;
- libglusterfs_client_inode_ctx_t *inode_ctx = NULL;
libglusterfs_client_ctx_t *ctx = NULL;
fd_ctx = libgf_get_fd_ctx (fd);
@@ -3690,28 +3737,14 @@ glusterfs_lseek (glusterfs_file_t fd, off_t offset, int whence)
{
char cache_valid = 0;
off_t end = 0;
- time_t prev, current;
loc_t loc = {0, };
struct stat stbuf = {0, };
- if ((inode_ctx = libgf_get_inode_ctx (__fd->inode))) {
- memset (&current, 0, sizeof (current));
- current = time (NULL);
-
- pthread_mutex_lock (&inode_ctx->lock);
- {
- prev = inode_ctx->previous_lookup_time;
- }
- pthread_mutex_unlock (&inode_ctx->lock);
-
- if ((prev >= 0)
- && (ctx->lookup_timeout >= (current - prev))) {
- cache_valid = 1;
- }
- }
-
- if (cache_valid) {
- end = inode_ctx->stbuf.st_size;
+ cache_valid = libgf_is_iattr_cache_valid (ctx, __fd->inode,
+ &stbuf,
+ LIBGF_VALIDATE_STAT);
+ if (cache_valid) {
+ end = stbuf.st_size;
} else {
op_ret = libgf_client_loc_fill (&loc, ctx,
__fd->inode->ino, 0,
@@ -3789,33 +3822,16 @@ libgf_client_stat (libglusterfs_client_ctx_t *ctx,
{
call_stub_t *stub = NULL;
int32_t op_ret = 0;
- time_t prev, current;
- libglusterfs_client_inode_ctx_t *inode_ctx = NULL;
libgf_client_local_t *local = NULL;
+ struct stat cachedbuf = {0, };
- inode_ctx = libgf_get_inode_ctx (loc->inode);
- if (!inode_ctx) {
- errno = EINVAL;
- op_ret = -1;
+ if (libgf_is_iattr_cache_valid (ctx, loc->inode, &cachedbuf,
+ LIBGF_VALIDATE_STAT)) {
+ if (stbuf)
+ memcpy (stbuf, &cachedbuf, sizeof (struct stat));
goto out;
}
- current = time (NULL);
- pthread_mutex_lock (&inode_ctx->lock);
- {
- prev = inode_ctx->previous_lookup_time;
- }
- pthread_mutex_unlock (&inode_ctx->lock);
- if ((current - prev) <= ctx->stat_timeout) {
- pthread_mutex_lock (&inode_ctx->lock);
- {
- memcpy (stbuf, &inode_ctx->stbuf, sizeof (*stbuf));
- }
- pthread_mutex_unlock (&inode_ctx->lock);
- op_ret = 0;
- goto out;
- }
-
LIBGF_CLIENT_FOP (ctx, stub, stat, local, loc);
op_ret = stub->args.stat_cbk.op_ret;
@@ -4031,37 +4047,17 @@ libgf_client_fstat (libglusterfs_client_ctx_t *ctx,
{
call_stub_t *stub = NULL;
int32_t op_ret = 0;
- fd_t *__fd = fd;
- time_t current, prev;
- libglusterfs_client_inode_ctx_t *inode_ctx = NULL;
libgf_client_local_t *local = NULL;
+ struct stat cachedbuf = {0, };
- current = time (NULL);
-
- inode_ctx = libgf_get_inode_ctx (__fd->inode);
- if (!inode_ctx) {
- errno = EINVAL;
- op_ret = -1;
+ if (libgf_is_iattr_cache_valid (ctx, fd->inode, &cachedbuf,
+ LIBGF_VALIDATE_STAT)) {
+ if (buf)
+ memcpy (buf, &cachedbuf, sizeof (struct stat));
goto out;
}
- pthread_mutex_lock (&inode_ctx->lock);
- {
- prev = inode_ctx->previous_stat_time;
- }
- pthread_mutex_unlock (&inode_ctx->lock);
-
- if ((current - prev) <= ctx->stat_timeout) {
- pthread_mutex_lock (&inode_ctx->lock);
- {
- memcpy (buf, &inode_ctx->stbuf, sizeof (*buf));
- }
- pthread_mutex_unlock (&inode_ctx->lock);
- op_ret = 0;
- goto out;
- }
-
- LIBGF_CLIENT_FOP (ctx, stub, fstat, local, __fd);
+ LIBGF_CLIENT_FOP (ctx, stub, fstat, local, fd);
op_ret = stub->args.fstat_cbk.op_ret;
errno = stub->args.fstat_cbk.op_errno;
generated by cgit (git 2.34.1) at 2024-11-02 16:29:26 +0000