diff options
| -rw-r--r-- | fs/fuse/dir.c | 31 | ||||
| -rw-r--r-- | fs/fuse/fuse_i.h | 9 | ||||
| -rw-r--r-- | fs/fuse/inode.c | 1 |
3 files changed, 38 insertions, 3 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index aa0b6ade0e68..dc5e64893375 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -14,6 +14,27 @@ #include <linux/namei.h> #include <linux/slab.h> +static bool fuse_use_readdirplus(struct inode *dir, struct file *filp) +{ + struct fuse_conn *fc = get_fuse_conn(dir); + struct fuse_inode *fi = get_fuse_inode(dir); + + if (!fc->do_readdirplus) + return false; + if (test_and_clear_bit(FUSE_I_ADVISE_RDPLUS, &fi->state)) + return true; + if (filp->f_pos == 0) + return true; + return false; +} + +static void fuse_advise_use_readdirplus(struct inode *dir) +{ + struct fuse_inode *fi = get_fuse_inode(dir); + + set_bit(FUSE_I_ADVISE_RDPLUS, &fi->state); +} + #if BITS_PER_LONG >= 64 static inline void fuse_dentry_settime(struct dentry *entry, u64 time) { @@ -219,6 +240,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags) attr_version); fuse_change_entry_timeout(entry, &outarg); } + fuse_advise_use_readdirplus(inode); return 1; } @@ -355,6 +377,7 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry, else fuse_invalidate_entry_cache(entry); + fuse_advise_use_readdirplus(dir); return newent; out_iput: @@ -1290,7 +1313,7 @@ static int parse_dirplusfile(char *buf, size_t nbytes, struct file *file, static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir) { - int err; + int plus, err; size_t nbytes; struct page *page; struct inode *inode = file->f_path.dentry->d_inode; @@ -1310,11 +1333,13 @@ static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir) fuse_put_request(fc, req); return -ENOMEM; } + + plus = fuse_use_readdirplus(inode, file); req->out.argpages = 1; req->num_pages = 1; req->pages[0] = page; req->page_descs[0].length = PAGE_SIZE; - if (fc->do_readdirplus) { + if (plus) { attr_version = fuse_get_attr_version(fc); fuse_read_fill(req, file, file->f_pos, PAGE_SIZE, FUSE_READDIRPLUS); @@ -1327,7 +1352,7 @@ static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir) err = req->out.h.error; fuse_put_request(fc, req); if (!err) { - if (fc->do_readdirplus) { + if (plus) { err = parse_dirplusfile(page_address(page), nbytes, file, dstbuf, filldir, attr_version); diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index af51c146a9ae..fc55dd33c1e2 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -106,6 +106,15 @@ struct fuse_inode { /** List of writepage requestst (pending or sent) */ struct list_head writepages; + + /** Miscellaneous bits describing inode state */ + unsigned long state; +}; + +/** FUSE inode state bits */ +enum { + /** Advise readdirplus */ + FUSE_I_ADVISE_RDPLUS, }; struct fuse_conn; diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 79b70deb7cd6..9876a87255fe 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -92,6 +92,7 @@ static struct inode *fuse_alloc_inode(struct super_block *sb) fi->attr_version = 0; fi->writectr = 0; fi->orig_ino = 0; + fi->state = 0; INIT_LIST_HEAD(&fi->write_files); INIT_LIST_HEAD(&fi->queued_writes); INIT_LIST_HEAD(&fi->writepages); |