diff --git a/fs/9p/cache.c b/fs/9p/cache.c index 5b335c5086a1..945aa5f02f9b 100644 --- a/fs/9p/cache.c +++ b/fs/9p/cache.c @@ -108,11 +108,10 @@ static uint16_t v9fs_cache_inode_get_key(const void *cookie_netfs_data, void *buffer, uint16_t bufmax) { const struct v9fs_inode *v9inode = cookie_netfs_data; - memcpy(buffer, &v9inode->fscache_key->path, - sizeof(v9inode->fscache_key->path)); + memcpy(buffer, &v9inode->qid.path, sizeof(v9inode->qid.path)); P9_DPRINTK(P9_DEBUG_FSC, "inode %p get key %llu", &v9inode->vfs_inode, - v9inode->fscache_key->path); - return sizeof(v9inode->fscache_key->path); + v9inode->qid.path); + return sizeof(v9inode->qid.path); } static void v9fs_cache_inode_get_attr(const void *cookie_netfs_data, @@ -129,11 +128,10 @@ static uint16_t v9fs_cache_inode_get_aux(const void *cookie_netfs_data, void *buffer, uint16_t buflen) { const struct v9fs_inode *v9inode = cookie_netfs_data; - memcpy(buffer, &v9inode->fscache_key->version, - sizeof(v9inode->fscache_key->version)); + memcpy(buffer, &v9inode->qid.version, sizeof(v9inode->qid.version)); P9_DPRINTK(P9_DEBUG_FSC, "inode %p get aux %u", &v9inode->vfs_inode, - v9inode->fscache_key->version); - return sizeof(v9inode->fscache_key->version); + v9inode->qid.version); + return sizeof(v9inode->qid.version); } static enum @@ -143,11 +141,11 @@ fscache_checkaux v9fs_cache_inode_check_aux(void *cookie_netfs_data, { const struct v9fs_inode *v9inode = cookie_netfs_data; - if (buflen != sizeof(v9inode->fscache_key->version)) + if (buflen != sizeof(v9inode->qid.version)) return FSCACHE_CHECKAUX_OBSOLETE; - if (memcmp(buffer, &v9inode->fscache_key->version, - sizeof(v9inode->fscache_key->version))) + if (memcmp(buffer, &v9inode->qid.version, + sizeof(v9inode->qid.version))) return FSCACHE_CHECKAUX_OBSOLETE; return FSCACHE_CHECKAUX_OKAY; diff --git a/fs/9p/cache.h b/fs/9p/cache.h index 049507a5b01c..40cc54ced5d9 100644 --- a/fs/9p/cache.h +++ b/fs/9p/cache.h @@ -93,15 +93,6 @@ static inline void v9fs_uncache_page(struct inode *inode, struct page *page) BUG_ON(PageFsCache(page)); } -static inline void v9fs_fscache_set_key(struct inode *inode, - struct p9_qid *qid) -{ - struct v9fs_inode *v9inode = V9FS_I(inode); - spin_lock(&v9inode->fscache_lock); - v9inode->fscache_key = qid; - spin_unlock(&v9inode->fscache_lock); -} - static inline void v9fs_fscache_wait_on_page_write(struct inode *inode, struct page *page) { diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c index c82b017f51f3..8b7c6be2450b 100644 --- a/fs/9p/v9fs.c +++ b/fs/9p/v9fs.c @@ -487,8 +487,8 @@ static void v9fs_inode_init_once(void *foo) struct v9fs_inode *v9inode = (struct v9fs_inode *)foo; #ifdef CONFIG_9P_FSCACHE v9inode->fscache = NULL; - v9inode->fscache_key = NULL; #endif + memset(&v9inode->qid, 0, sizeof(v9inode->qid)); inode_init_once(&v9inode->vfs_inode); } diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h index e5ebedfc5ed8..5d7392ead24b 100644 --- a/fs/9p/v9fs.h +++ b/fs/9p/v9fs.h @@ -125,8 +125,8 @@ struct v9fs_inode { #ifdef CONFIG_9P_FSCACHE spinlock_t fscache_lock; struct fscache_cookie *fscache; - struct p9_qid *fscache_key; #endif + struct p9_qid qid; unsigned int cache_validity; struct p9_fid *writeback_fid; struct mutex v_mutex; diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index a5a95372cd68..3d8a18ee78e6 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -216,7 +216,6 @@ struct inode *v9fs_alloc_inode(struct super_block *sb) return NULL; #ifdef CONFIG_9P_FSCACHE v9inode->fscache = NULL; - v9inode->fscache_key = NULL; spin_lock_init(&v9inode->fscache_lock); #endif v9inode->writeback_fid = NULL; @@ -433,6 +432,37 @@ void v9fs_evict_inode(struct inode *inode) } } +static int v9fs_test_inode(struct inode *inode, void *data) +{ + int umode; + struct v9fs_inode *v9inode = V9FS_I(inode); + struct p9_wstat *st = (struct p9_wstat *)data; + struct v9fs_session_info *v9ses = v9fs_inode2v9ses(inode); + + umode = p9mode2unixmode(v9ses, st->mode); + /* don't match inode of different type */ + if ((inode->i_mode & S_IFMT) != (umode & S_IFMT)) + return 0; + + /* compare qid details */ + if (memcmp(&v9inode->qid.version, + &st->qid.version, sizeof(v9inode->qid.version))) + return 0; + + if (v9inode->qid.type != st->qid.type) + return 0; + return 1; +} + +static int v9fs_set_inode(struct inode *inode, void *data) +{ + struct v9fs_inode *v9inode = V9FS_I(inode); + struct p9_wstat *st = (struct p9_wstat *)data; + + memcpy(&v9inode->qid, &st->qid, sizeof(st->qid)); + return 0; +} + static struct inode *v9fs_qid_iget(struct super_block *sb, struct p9_qid *qid, struct p9_wstat *st) @@ -443,7 +473,7 @@ static struct inode *v9fs_qid_iget(struct super_block *sb, struct v9fs_session_info *v9ses = sb->s_fs_info; i_ino = v9fs_qid2ino(qid); - inode = iget_locked(sb, i_ino); + inode = iget5_locked(sb, i_ino, v9fs_test_inode, v9fs_set_inode, st); if (!inode) return ERR_PTR(-ENOMEM); if (!(inode->i_state & I_NEW)) @@ -453,6 +483,7 @@ static struct inode *v9fs_qid_iget(struct super_block *sb, * FIXME!! we may need support for stale inodes * later. */ + inode->i_ino = i_ino; umode = p9mode2unixmode(v9ses, st->mode); retval = v9fs_init_inode(v9ses, inode, umode); if (retval) @@ -460,7 +491,6 @@ static struct inode *v9fs_qid_iget(struct super_block *sb, v9fs_stat2inode(st, inode, sb); #ifdef CONFIG_9P_FSCACHE - v9fs_fscache_set_key(inode, &st->qid); v9fs_cache_inode_get_cookie(inode); #endif unlock_new_inode(inode); diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index 32bbbe5aa689..dc9e7de38202 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -86,6 +86,38 @@ static struct dentry *v9fs_dentry_from_dir_inode(struct inode *inode) return dentry; } +static int v9fs_test_inode_dotl(struct inode *inode, void *data) +{ + struct v9fs_inode *v9inode = V9FS_I(inode); + struct p9_stat_dotl *st = (struct p9_stat_dotl *)data; + + /* don't match inode of different type */ + if ((inode->i_mode & S_IFMT) != (st->st_mode & S_IFMT)) + return 0; + + if (inode->i_generation != st->st_gen) + return 0; + + /* compare qid details */ + if (memcmp(&v9inode->qid.version, + &st->qid.version, sizeof(v9inode->qid.version))) + return 0; + + if (v9inode->qid.type != st->qid.type) + return 0; + return 1; +} + +static int v9fs_set_inode_dotl(struct inode *inode, void *data) +{ + struct v9fs_inode *v9inode = V9FS_I(inode); + struct p9_stat_dotl *st = (struct p9_stat_dotl *)data; + + memcpy(&v9inode->qid, &st->qid, sizeof(st->qid)); + inode->i_generation = st->st_gen; + return 0; +} + static struct inode *v9fs_qid_iget_dotl(struct super_block *sb, struct p9_qid *qid, struct p9_fid *fid, @@ -97,7 +129,8 @@ static struct inode *v9fs_qid_iget_dotl(struct super_block *sb, struct v9fs_session_info *v9ses = sb->s_fs_info; i_ino = v9fs_qid2ino(qid); - inode = iget_locked(sb, i_ino); + inode = iget5_locked(sb, i_ino, v9fs_test_inode_dotl, + v9fs_set_inode_dotl, st); if (!inode) return ERR_PTR(-ENOMEM); if (!(inode->i_state & I_NEW)) @@ -107,13 +140,13 @@ static struct inode *v9fs_qid_iget_dotl(struct super_block *sb, * FIXME!! we may need support for stale inodes * later. */ + inode->i_ino = i_ino; retval = v9fs_init_inode(v9ses, inode, st->st_mode); if (retval) goto error; v9fs_stat2inode_dotl(st, inode); #ifdef CONFIG_9P_FSCACHE - v9fs_fscache_set_key(inode, &st->qid); v9fs_cache_inode_get_cookie(inode); #endif retval = v9fs_get_acl(inode, fid); @@ -136,7 +169,7 @@ v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid, struct p9_stat_dotl *st; struct inode *inode = NULL; - st = p9_client_getattr_dotl(fid, P9_STATS_BASIC); + st = p9_client_getattr_dotl(fid, P9_STATS_BASIC | P9_STATS_GEN); if (IS_ERR(st)) return ERR_CAST(st); @@ -547,7 +580,7 @@ v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode) inode->i_blocks = stat->st_blocks; } if (stat->st_result_mask & P9_STATS_GEN) - inode->i_generation = stat->st_gen; + inode->i_generation = stat->st_gen; /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION * because the inode structure does not have fields for them.