Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755291Ab0KRHhI (ORCPT ); Thu, 18 Nov 2010 02:37:08 -0500 Received: from mx1.redhat.com ([209.132.183.28]:64190 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752366Ab0KRHhF (ORCPT ); Thu, 18 Nov 2010 02:37:05 -0500 From: Lukas Czerner To: tytso@mit.edu Cc: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, hch@infradead.org, sandeen@redhat.com, lczerner@redhat.com Subject: [PATCH 1/2] fs: Do not dispatch FITRIM through separate super_operation Date: Thu, 18 Nov 2010 08:36:48 +0100 Message-Id: <1290065809-3976-1-git-send-email-lczerner@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3003 Lines: 104 There was concern that FITRIM ioctl is not common enough to be included in core vfs ioctl, as Christoph Hellwig pointed out there's no real point in dispatching this out to a separate vector instead of just through ->ioctl. So this commit removes ioctl_fstrim() from vfs ioctl and trim_fs from super_operation structure. Signed-off-by: Lukas Czerner --- fs/ext4/super.c | 1 - fs/ioctl.c | 39 --------------------------------------- include/linux/fs.h | 1 - 3 files changed, 0 insertions(+), 41 deletions(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 61182fe..1d3c2aa 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1197,7 +1197,6 @@ static const struct super_operations ext4_sops = { .quota_write = ext4_quota_write, #endif .bdev_try_to_free_page = bdev_try_to_free_page, - .trim_fs = ext4_trim_fs }; static const struct super_operations ext4_nojournal_sops = { diff --git a/fs/ioctl.c b/fs/ioctl.c index e92fdbb..f855ea4 100644 --- a/fs/ioctl.c +++ b/fs/ioctl.c @@ -530,41 +530,6 @@ static int ioctl_fsthaw(struct file *filp) return thaw_super(sb); } -static int ioctl_fstrim(struct file *filp, void __user *argp) -{ - struct super_block *sb = filp->f_path.dentry->d_inode->i_sb; - struct fstrim_range range; - int ret = 0; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - /* If filesystem doesn't support trim feature, return. */ - if (sb->s_op->trim_fs == NULL) - return -EOPNOTSUPP; - - /* If a blockdevice-backed filesystem isn't specified, return EINVAL. */ - if (sb->s_bdev == NULL) - return -EINVAL; - - if (argp == NULL) { - range.start = 0; - range.len = ULLONG_MAX; - range.minlen = 0; - } else if (copy_from_user(&range, argp, sizeof(range))) - return -EFAULT; - - ret = sb->s_op->trim_fs(sb, &range); - if (ret < 0) - return ret; - - if ((argp != NULL) && - (copy_to_user(argp, &range, sizeof(range)))) - return -EFAULT; - - return 0; -} - /* * When you add any new common ioctls to the switches above and below * please update compat_sys_ioctl() too. @@ -615,10 +580,6 @@ int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd, error = ioctl_fsthaw(filp); break; - case FITRIM: - error = ioctl_fstrim(filp, argp); - break; - case FS_IOC_FIEMAP: return ioctl_fiemap(filp, arg); diff --git a/include/linux/fs.h b/include/linux/fs.h index 334d68a..eedc00b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1612,7 +1612,6 @@ struct super_operations { ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t); #endif int (*bdev_try_to_free_page)(struct super_block*, struct page*, gfp_t); - int (*trim_fs) (struct super_block *, struct fstrim_range *); }; /* -- 1.7.2.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/