diff --git a/fs/coda/dir.c b/fs/coda/dir.c index 69fbbea75f1b..96fbeab77f2f 100644 --- a/fs/coda/dir.c +++ b/fs/coda/dir.c @@ -17,7 +17,6 @@ #include #include #include -#include #include #include @@ -117,15 +116,11 @@ static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry, struc goto exit; } - lock_kernel(); - error = venus_lookup(dir->i_sb, coda_i2f(dir), name, length, &type, &resfid); if (!error) error = coda_cnode_make(&inode, &resfid, dir->i_sb); - unlock_kernel(); - if (error && error != -ENOENT) return ERR_PTR(error); @@ -141,28 +136,24 @@ static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry, struc int coda_permission(struct inode *inode, int mask) { - int error = 0; + int error; mask &= MAY_READ | MAY_WRITE | MAY_EXEC; if (!mask) - return 0; + return 0; if ((mask & MAY_EXEC) && !execute_ok(inode)) return -EACCES; - lock_kernel(); - if (coda_cache_check(inode, mask)) - goto out; + return 0; - error = venus_access(inode->i_sb, coda_i2f(inode), mask); + error = venus_access(inode->i_sb, coda_i2f(inode), mask); if (!error) coda_cache_enter(inode, mask); - out: - unlock_kernel(); return error; } @@ -201,41 +192,34 @@ static inline void coda_dir_drop_nlink(struct inode *dir) /* creation routines: create, mknod, mkdir, link, symlink */ static int coda_create(struct inode *dir, struct dentry *de, int mode, struct nameidata *nd) { - int error=0; + int error; const char *name=de->d_name.name; int length=de->d_name.len; struct inode *inode; struct CodaFid newfid; struct coda_vattr attrs; - lock_kernel(); - - if (coda_isroot(dir) && coda_iscontrol(name, length)) { - unlock_kernel(); + if (coda_isroot(dir) && coda_iscontrol(name, length)) return -EPERM; - } error = venus_create(dir->i_sb, coda_i2f(dir), name, length, 0, mode, &newfid, &attrs); - - if ( error ) { - unlock_kernel(); - d_drop(de); - return error; - } + if (error) + goto err_out; inode = coda_iget(dir->i_sb, &newfid, &attrs); - if ( IS_ERR(inode) ) { - unlock_kernel(); - d_drop(de); - return PTR_ERR(inode); + if (IS_ERR(inode)) { + error = PTR_ERR(inode); + goto err_out; } /* invalidate the directory cnode's attributes */ coda_dir_update_mtime(dir); - unlock_kernel(); d_instantiate(de, inode); return 0; +err_out: + d_drop(de); + return error; } static int coda_mkdir(struct inode *dir, struct dentry *de, int mode) @@ -247,36 +231,29 @@ static int coda_mkdir(struct inode *dir, struct dentry *de, int mode) int error; struct CodaFid newfid; - lock_kernel(); - - if (coda_isroot(dir) && coda_iscontrol(name, len)) { - unlock_kernel(); + if (coda_isroot(dir) && coda_iscontrol(name, len)) return -EPERM; - } attrs.va_mode = mode; error = venus_mkdir(dir->i_sb, coda_i2f(dir), name, len, &newfid, &attrs); - - if ( error ) { - unlock_kernel(); - d_drop(de); - return error; - } + if (error) + goto err_out; inode = coda_iget(dir->i_sb, &newfid, &attrs); - if ( IS_ERR(inode) ) { - unlock_kernel(); - d_drop(de); - return PTR_ERR(inode); + if (IS_ERR(inode)) { + error = PTR_ERR(inode); + goto err_out; } /* invalidate the directory cnode's attributes */ coda_dir_inc_nlink(dir); coda_dir_update_mtime(dir); - unlock_kernel(); d_instantiate(de, inode); return 0; +err_out: + d_drop(de); + return error; } /* try to make de an entry in dir_inodde linked to source_de */ @@ -288,52 +265,38 @@ static int coda_link(struct dentry *source_de, struct inode *dir_inode, int len = de->d_name.len; int error; - lock_kernel(); - - if (coda_isroot(dir_inode) && coda_iscontrol(name, len)) { - unlock_kernel(); + if (coda_isroot(dir_inode) && coda_iscontrol(name, len)) return -EPERM; - } error = venus_link(dir_inode->i_sb, coda_i2f(inode), coda_i2f(dir_inode), (const char *)name, len); - if (error) { d_drop(de); - goto out; + return error; } coda_dir_update_mtime(dir_inode); atomic_inc(&inode->i_count); d_instantiate(de, inode); inc_nlink(inode); - -out: - unlock_kernel(); - return(error); + return 0; } static int coda_symlink(struct inode *dir_inode, struct dentry *de, const char *symname) { - const char *name = de->d_name.name; + const char *name = de->d_name.name; int len = de->d_name.len; int symlen; - int error = 0; + int error; - lock_kernel(); - - if (coda_isroot(dir_inode) && coda_iscontrol(name, len)) { - unlock_kernel(); + if (coda_isroot(dir_inode) && coda_iscontrol(name, len)) return -EPERM; - } symlen = strlen(symname); - if ( symlen > CODA_MAXPATHLEN ) { - unlock_kernel(); + if (symlen > CODA_MAXPATHLEN) return -ENAMETOOLONG; - } /* * This entry is now negative. Since we do not create @@ -344,10 +307,9 @@ static int coda_symlink(struct inode *dir_inode, struct dentry *de, symname, symlen); /* mtime is no good anymore */ - if ( !error ) + if (!error) coda_dir_update_mtime(dir_inode); - unlock_kernel(); return error; } @@ -358,17 +320,12 @@ static int coda_unlink(struct inode *dir, struct dentry *de) const char *name = de->d_name.name; int len = de->d_name.len; - lock_kernel(); - error = venus_remove(dir->i_sb, coda_i2f(dir), name, len); - if ( error ) { - unlock_kernel(); + if (error) return error; - } coda_dir_update_mtime(dir); drop_nlink(de->d_inode); - unlock_kernel(); return 0; } @@ -378,8 +335,6 @@ static int coda_rmdir(struct inode *dir, struct dentry *de) int len = de->d_name.len; int error; - lock_kernel(); - error = venus_rmdir(dir->i_sb, coda_i2f(dir), name, len); if (!error) { /* VFS may delete the child */ @@ -390,7 +345,6 @@ static int coda_rmdir(struct inode *dir, struct dentry *de) coda_dir_drop_nlink(dir); coda_dir_update_mtime(dir); } - unlock_kernel(); return error; } @@ -404,15 +358,12 @@ static int coda_rename(struct inode *old_dir, struct dentry *old_dentry, int new_length = new_dentry->d_name.len; int error; - lock_kernel(); - error = venus_rename(old_dir->i_sb, coda_i2f(old_dir), coda_i2f(new_dir), old_length, new_length, (const char *) old_name, (const char *)new_name); - - if ( !error ) { - if ( new_dentry->d_inode ) { - if ( S_ISDIR(new_dentry->d_inode->i_mode) ) { + if (!error) { + if (new_dentry->d_inode) { + if (S_ISDIR(new_dentry->d_inode->i_mode)) { coda_dir_drop_nlink(old_dir); coda_dir_inc_nlink(new_dir); } @@ -424,8 +375,6 @@ static int coda_rename(struct inode *old_dir, struct dentry *old_dentry, coda_flag_inode(new_dir, C_VATTR); } } - unlock_kernel(); - return error; } @@ -595,10 +544,7 @@ static int coda_dentry_revalidate(struct dentry *de, struct nameidata *nd) struct inode *inode = de->d_inode; struct coda_inode_info *cii; - if (!inode) - return 1; - lock_kernel(); - if (coda_isroot(inode)) + if (!inode || coda_isroot(inode)) goto out; if (is_bad_inode(inode)) goto bad; @@ -621,12 +567,9 @@ static int coda_dentry_revalidate(struct dentry *de, struct nameidata *nd) spin_lock(&cii->c_lock); cii->c_flags &= ~(C_VATTR | C_PURGE | C_FLUSH); spin_unlock(&cii->c_lock); - bad: - unlock_kernel(); return 0; out: - unlock_kernel(); return 1; } @@ -659,20 +602,19 @@ static int coda_dentry_delete(struct dentry * dentry) int coda_revalidate_inode(struct dentry *dentry) { struct coda_vattr attr; - int error = 0; + int error; int old_mode; ino_t old_ino; struct inode *inode = dentry->d_inode; struct coda_inode_info *cii = ITOC(inode); - lock_kernel(); - if ( !cii->c_flags ) - goto ok; + if (!cii->c_flags) + return 0; if (cii->c_flags & (C_VATTR | C_PURGE | C_FLUSH)) { error = venus_getattr(inode->i_sb, &(cii->c_fid), &attr); - if ( error ) - goto return_bad; + if (error) + return -EIO; /* this inode may be lost if: - it's ino changed @@ -691,7 +633,7 @@ int coda_revalidate_inode(struct dentry *dentry) /* the following can happen when a local fid is replaced with a global one, here we lose and declare the inode bad */ if (inode->i_ino != old_ino) - goto return_bad; + return -EIO; coda_flag_inode_children(inode, C_FLUSH); @@ -699,12 +641,5 @@ int coda_revalidate_inode(struct dentry *dentry) cii->c_flags &= ~(C_VATTR | C_PURGE | C_FLUSH); spin_unlock(&cii->c_lock); } - -ok: - unlock_kernel(); return 0; - -return_bad: - unlock_kernel(); - return -EIO; } diff --git a/fs/coda/file.c b/fs/coda/file.c index c4e395781d41..c8b50ba4366a 100644 --- a/fs/coda/file.c +++ b/fs/coda/file.c @@ -15,7 +15,6 @@ #include #include #include -#include #include #include #include @@ -144,8 +143,6 @@ int coda_open(struct inode *coda_inode, struct file *coda_file) if (!cfi) return -ENOMEM; - lock_kernel(); - error = venus_open(coda_inode->i_sb, coda_i2f(coda_inode), coda_flags, &host_file); if (!host_file) @@ -153,7 +150,6 @@ int coda_open(struct inode *coda_inode, struct file *coda_file) if (error) { kfree(cfi); - unlock_kernel(); return error; } @@ -165,8 +161,6 @@ int coda_open(struct inode *coda_inode, struct file *coda_file) BUG_ON(coda_file->private_data != NULL); coda_file->private_data = cfi; - - unlock_kernel(); return 0; } @@ -177,9 +171,7 @@ int coda_release(struct inode *coda_inode, struct file *coda_file) struct coda_file_info *cfi; struct coda_inode_info *cii; struct inode *host_inode; - int err = 0; - - lock_kernel(); + int err; cfi = CODA_FTOC(coda_file); BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC); @@ -203,8 +195,6 @@ int coda_release(struct inode *coda_inode, struct file *coda_file) kfree(coda_file->private_data); coda_file->private_data = NULL; - unlock_kernel(); - /* VFS fput ignores the return value from file_operations->release, so * there is no use returning an error here */ return 0; @@ -215,7 +205,7 @@ int coda_fsync(struct file *coda_file, int datasync) struct file *host_file; struct inode *coda_inode = coda_file->f_path.dentry->d_inode; struct coda_file_info *cfi; - int err = 0; + int err; if (!(S_ISREG(coda_inode->i_mode) || S_ISDIR(coda_inode->i_mode) || S_ISLNK(coda_inode->i_mode))) @@ -226,11 +216,8 @@ int coda_fsync(struct file *coda_file, int datasync) host_file = cfi->cfi_container; err = vfs_fsync(host_file, datasync); - if ( !err && !datasync ) { - lock_kernel(); + if (!err && !datasync) err = venus_fsync(coda_inode->i_sb, coda_i2f(coda_inode)); - unlock_kernel(); - } return err; } diff --git a/fs/coda/inode.c b/fs/coda/inode.c index 0553f3bd7b1b..b7fa3e3d772f 100644 --- a/fs/coda/inode.c +++ b/fs/coda/inode.c @@ -150,8 +150,6 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent) int error; int idx; - lock_kernel(); - idx = get_device_index((struct coda_mount_data *) data); /* Ignore errors in data, for backward compatibility */ @@ -161,23 +159,26 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent) printk(KERN_INFO "coda_read_super: device index: %i\n", idx); vc = &coda_comms[idx]; + lock_kernel(); + if (!vc->vc_inuse) { printk("coda_read_super: No pseudo device\n"); - unlock_kernel(); - return -EINVAL; + error = -EINVAL; + goto unlock_out; } - if ( vc->vc_sb ) { + if (vc->vc_sb) { printk("coda_read_super: Device already mounted\n"); - unlock_kernel(); - return -EBUSY; + error = -EBUSY; + goto unlock_out; } error = bdi_setup_and_register(&vc->bdi, "coda", BDI_CAP_MAP_COPY); if (error) - goto bdi_err; + goto unlock_out; vc->vc_sb = sb; + unlock_kernel(); sb->s_fs_info = vc; sb->s_flags |= MS_NOATIME; @@ -206,21 +207,23 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent) printk("coda_read_super: rootinode is %ld dev %s\n", root->i_ino, root->i_sb->s_id); sb->s_root = d_alloc_root(root); - if (!sb->s_root) + if (!sb->s_root) { + error = -EINVAL; goto error; - unlock_kernel(); + } return 0; - error: - bdi_destroy(&vc->bdi); - bdi_err: +error: if (root) iput(root); - if (vc) - vc->vc_sb = NULL; + lock_kernel(); + bdi_destroy(&vc->bdi); + vc->vc_sb = NULL; + sb->s_fs_info = NULL; +unlock_out: unlock_kernel(); - return -EINVAL; + return error; } static void coda_put_super(struct super_block *sb) @@ -253,8 +256,6 @@ int coda_setattr(struct dentry *de, struct iattr *iattr) struct coda_vattr vattr; int error; - lock_kernel(); - memset(&vattr, 0, sizeof(vattr)); inode->i_ctime = CURRENT_TIME_SEC; @@ -264,13 +265,10 @@ int coda_setattr(struct dentry *de, struct iattr *iattr) /* Venus is responsible for truncating the container-file!!! */ error = venus_setattr(inode->i_sb, coda_i2f(inode), &vattr); - if ( !error ) { + if (!error) { coda_vattr_to_iattr(inode, &vattr); coda_cache_clear_inode(inode); } - - unlock_kernel(); - return error; } @@ -284,12 +282,8 @@ static int coda_statfs(struct dentry *dentry, struct kstatfs *buf) { int error; - lock_kernel(); - error = venus_statfs(dentry, buf); - unlock_kernel(); - if (error) { /* fake something like AFS does */ buf->f_blocks = 9000000; diff --git a/fs/coda/pioctl.c b/fs/coda/pioctl.c index 028a9a0f588b..2fd89b5c5c7b 100644 --- a/fs/coda/pioctl.c +++ b/fs/coda/pioctl.c @@ -23,8 +23,6 @@ #include #include -#include - /* pioctl ops */ static int coda_ioctl_permission(struct inode *inode, int mask); static long coda_pioctl(struct file *filp, unsigned int cmd, @@ -58,13 +56,9 @@ static long coda_pioctl(struct file *filp, unsigned int cmd, struct inode *target_inode = NULL; struct coda_inode_info *cnp; - lock_kernel(); - /* get the Pioctl data arguments from user space */ - if (copy_from_user(&data, (void __user *)user_data, sizeof(data))) { - error = -EINVAL; - goto out; - } + if (copy_from_user(&data, (void __user *)user_data, sizeof(data))) + return -EINVAL; /* * Look up the pathname. Note that the pathname is in @@ -76,13 +70,12 @@ static long coda_pioctl(struct file *filp, unsigned int cmd, error = user_lpath(data.path, &path); if (error) - goto out; - else - target_inode = path.dentry->d_inode; + return error; + + target_inode = path.dentry->d_inode; /* return if it is not a Coda inode */ if (target_inode->i_sb != inode->i_sb) { - path_put(&path); error = -EINVAL; goto out; } @@ -91,10 +84,7 @@ static long coda_pioctl(struct file *filp, unsigned int cmd, cnp = ITOC(target_inode); error = venus_pioctl(inode->i_sb, &(cnp->c_fid), cmd, &data); - - path_put(&path); - out: - unlock_kernel(); + path_put(&path); return error; } diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c index fdc2f3ef7ecd..9a9248e632c6 100644 --- a/fs/coda/psdev.c +++ b/fs/coda/psdev.c @@ -108,16 +108,9 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf, return -EFAULT; if (DOWNCALL(hdr.opcode)) { - struct super_block *sb = NULL; - union outputArgs *dcbuf; + union outputArgs *dcbuf; int size = sizeof(*dcbuf); - sb = vcp->vc_sb; - if ( !sb ) { - count = nbytes; - goto out; - } - if ( nbytes < sizeof(struct coda_out_hdr) ) { printk("coda_downcall opc %d uniq %d, not enough!\n", hdr.opcode, hdr.unique); @@ -137,9 +130,7 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf, } /* what downcall errors does Venus handle ? */ - lock_kernel(); - error = coda_downcall(hdr.opcode, dcbuf, sb); - unlock_kernel(); + error = coda_downcall(vcp, hdr.opcode, dcbuf); CODA_FREE(dcbuf, nbytes); if (error) { diff --git a/fs/coda/symlink.c b/fs/coda/symlink.c index 4513b7258458..af78f007a2b0 100644 --- a/fs/coda/symlink.c +++ b/fs/coda/symlink.c @@ -14,7 +14,6 @@ #include #include #include -#include #include #include @@ -29,11 +28,9 @@ static int coda_symlink_filler(struct file *file, struct page *page) unsigned int len = PAGE_SIZE; char *p = kmap(page); - lock_kernel(); cii = ITOC(inode); error = venus_readlink(inode->i_sb, &cii->c_fid, p, &len); - unlock_kernel(); if (error) goto fail; SetPageUptodate(page); diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c index b8893ab6f9e6..4c258cb5266d 100644 --- a/fs/coda/upcall.c +++ b/fs/coda/upcall.c @@ -27,6 +27,7 @@ #include #include #include +#include #include #include #include @@ -667,18 +668,23 @@ static int coda_upcall(struct venus_comm *vcp, { union outputArgs *out; union inputArgs *sig_inputArgs; - struct upc_req *req, *sig_req; - int error = 0; + struct upc_req *req = NULL, *sig_req; + int error; + + lock_kernel(); if (!vcp->vc_inuse) { printk(KERN_NOTICE "coda: Venus dead, not sending upcall\n"); - return -ENXIO; + error = -ENXIO; + goto exit; } /* Format the request message. */ req = kmalloc(sizeof(struct upc_req), GFP_KERNEL); - if (!req) - return -ENOMEM; + if (!req) { + error = -ENOMEM; + goto exit; + } req->uc_data = (void *)buffer; req->uc_flags = 0; @@ -759,6 +765,7 @@ static int coda_upcall(struct venus_comm *vcp, exit: kfree(req); + unlock_kernel(); return error; } @@ -796,21 +803,24 @@ static int coda_upcall(struct venus_comm *vcp, * * CODA_REPLACE -- replace one CodaFid with another throughout the name cache */ -int coda_downcall(int opcode, union outputArgs * out, struct super_block *sb) +int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out) { struct inode *inode = NULL; struct CodaFid *fid, *newfid; + struct super_block *sb; /* Handle invalidation requests. */ - if ( !sb || !sb->s_root) - return 0; + lock_kernel(); + sb = vcp->vc_sb; + if (!sb || !sb->s_root) + goto unlock_out; switch (opcode) { case CODA_FLUSH: coda_cache_clear_all(sb); shrink_dcache_sb(sb); if (sb->s_root->d_inode) - coda_flag_inode(sb->s_root->d_inode, C_FLUSH); + coda_flag_inode(sb->s_root->d_inode, C_FLUSH); break; case CODA_PURGEUSER: @@ -855,9 +865,11 @@ int coda_downcall(int opcode, union outputArgs * out, struct super_block *sb) break; } +unlock_out: + unlock_kernel(); + if (inode) iput(inode); - return 0; } diff --git a/include/linux/coda_psdev.h b/include/linux/coda_psdev.h index 284b520934a0..1e60c5a41a5b 100644 --- a/include/linux/coda_psdev.h +++ b/include/linux/coda_psdev.h @@ -63,7 +63,7 @@ int venus_symlink(struct super_block *sb, struct CodaFid *fid, int venus_access(struct super_block *sb, struct CodaFid *fid, int mask); int venus_pioctl(struct super_block *sb, struct CodaFid *fid, unsigned int cmd, struct PioctlData *data); -int coda_downcall(int opcode, union outputArgs *out, struct super_block *sb); +int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out); int venus_fsync(struct super_block *sb, struct CodaFid *fid); int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);