From 4ca488eb45692520f745f96abc00ea4e268a87d4 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 11 Oct 2007 18:09:40 +1000 Subject: [PATCH] [XFS] Kill off xfs_statvfs. We were already filling the Linux struct statfs anyway, and doing this trivial task directly in xfs_fs_statfs makes the code quite a bit cleaner. While I was at it I also moved copying attributes that don't change over the lifetime of the filesystem outside the superblock lock. xfs_fs_fill_super used to get the magic number and blocksize through xfs_statvfs, but assigning them directly is a lot cleaner and will save some stack space during mount. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:29802a Signed-off-by: Christoph Hellwig Signed-off-by: Tim Shimmin --- fs/xfs/linux-2.6/xfs_linux.h | 4 --- fs/xfs/linux-2.6/xfs_super.c | 51 +++++++++++++++++++++++++++------- fs/xfs/xfs_vfsops.c | 53 ------------------------------------ fs/xfs/xfs_vfsops.h | 2 -- 4 files changed, 41 insertions(+), 69 deletions(-) diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index ec51ecd13877..9bf4f7e965c7 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -207,10 +207,6 @@ #define xfs_stack_trace() dump_stack() #define xfs_itruncate_data(ip, off) \ (-vmtruncate(vn_to_inode(XFS_ITOV(ip)), (off))) -#define xfs_statvfs_fsid(statp, mp) \ - ({ u64 id = huge_encode_dev((mp)->m_ddev_targp->bt_dev); \ - __kernel_fsid_t *fsid = &(statp)->f_fsid; \ - (fsid->val[0] = (u32)id, fsid->val[1] = (u32)(id >> 32)); }) /* Move the kernel do_div definition off to one side */ diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index 400ed2f20717..c0549737f7ea 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -681,8 +681,44 @@ xfs_fs_statfs( struct dentry *dentry, struct kstatfs *statp) { - return -xfs_statvfs(XFS_M(dentry->d_sb), statp, - vn_from_inode(dentry->d_inode)); + struct xfs_mount *mp = XFS_M(dentry->d_sb); + xfs_sb_t *sbp = &mp->m_sb; + __uint64_t fakeinos, id; + xfs_extlen_t lsize; + + statp->f_type = XFS_SB_MAGIC; + statp->f_namelen = MAXNAMELEN - 1; + + id = huge_encode_dev(mp->m_ddev_targp->bt_dev); + statp->f_fsid.val[0] = (u32)id; + statp->f_fsid.val[1] = (u32)(id >> 32); + + xfs_icsb_sync_counters_flags(mp, XFS_ICSB_LAZY_COUNT); + + spin_lock(&mp->m_sb_lock); + statp->f_bsize = sbp->sb_blocksize; + lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; + statp->f_blocks = sbp->sb_dblocks - lsize; + statp->f_bfree = statp->f_bavail = + sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); + fakeinos = statp->f_bfree << sbp->sb_inopblog; +#if XFS_BIG_INUMS + fakeinos += mp->m_inoadd; +#endif + statp->f_files = + MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); + if (mp->m_maxicount) +#if XFS_BIG_INUMS + if (!mp->m_inoadd) +#endif + statp->f_files = min_t(typeof(statp->f_files), + statp->f_files, + mp->m_maxicount); + statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); + spin_unlock(&mp->m_sb_lock); + + XFS_QM_DQSTATVFS(XFS_I(dentry->d_inode), statp); + return 0; } STATIC int @@ -777,7 +813,6 @@ xfs_fs_fill_super( struct inode *rootvp; struct xfs_mount *mp = NULL; struct xfs_mount_args *args = xfs_args_allocate(sb, silent); - struct kstatfs statvfs; int error; mp = xfs_mount_init(); @@ -805,14 +840,10 @@ xfs_fs_fill_super( if (error) goto fail_vfsop; - error = xfs_statvfs(mp, &statvfs, NULL); - if (error) - goto fail_unmount; - sb->s_dirt = 1; - sb->s_magic = statvfs.f_type; - sb->s_blocksize = statvfs.f_bsize; - sb->s_blocksize_bits = ffs(statvfs.f_bsize) - 1; + sb->s_magic = XFS_SB_MAGIC; + sb->s_blocksize = mp->m_sb.sb_blocksize; + sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); sb->s_time_gran = 1; set_posix_acl_flag(sb); diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c index f5844678d45e..1249548aa12e 100644 --- a/fs/xfs/xfs_vfsops.c +++ b/fs/xfs/xfs_vfsops.c @@ -838,59 +838,6 @@ xfs_root( return 0; } -/* - * xfs_statvfs - * - * Fill in the statvfs structure for the given file system. We use - * the superblock lock in the mount structure to ensure a consistent - * snapshot of the counters returned. - */ -int -xfs_statvfs( - xfs_mount_t *mp, - bhv_statvfs_t *statp, - bhv_vnode_t *vp) -{ - __uint64_t fakeinos; - xfs_extlen_t lsize; - xfs_sb_t *sbp; - - sbp = &(mp->m_sb); - - statp->f_type = XFS_SB_MAGIC; - - xfs_icsb_sync_counters_flags(mp, XFS_ICSB_LAZY_COUNT); - spin_lock(&mp->m_sb_lock); - statp->f_bsize = sbp->sb_blocksize; - lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; - statp->f_blocks = sbp->sb_dblocks - lsize; - statp->f_bfree = statp->f_bavail = - sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); - fakeinos = statp->f_bfree << sbp->sb_inopblog; -#if XFS_BIG_INUMS - fakeinos += mp->m_inoadd; -#endif - statp->f_files = - MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); - if (mp->m_maxicount) -#if XFS_BIG_INUMS - if (!mp->m_inoadd) -#endif - statp->f_files = min_t(typeof(statp->f_files), - statp->f_files, - mp->m_maxicount); - statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); - spin_unlock(&mp->m_sb_lock); - - xfs_statvfs_fsid(statp, mp); - statp->f_namelen = MAXNAMELEN - 1; - - if (vp) - XFS_QM_DQSTATVFS(xfs_vtoi(vp), statp); - return 0; -} - - /* * xfs_sync flushes any pending I/O to file system vfsp. * diff --git a/fs/xfs/xfs_vfsops.h b/fs/xfs/xfs_vfsops.h index a592fe02a339..ce3eb9454de4 100644 --- a/fs/xfs/xfs_vfsops.h +++ b/fs/xfs/xfs_vfsops.h @@ -14,8 +14,6 @@ int xfs_unmount(struct xfs_mount *mp, int flags, struct cred *credp); int xfs_mntupdate(struct xfs_mount *mp, int *flags, struct xfs_mount_args *args); int xfs_root(struct xfs_mount *mp, bhv_vnode_t **vpp); -int xfs_statvfs(struct xfs_mount *mp, struct kstatfs *statp, - bhv_vnode_t *vp); int xfs_sync(struct xfs_mount *mp, int flags); int xfs_vget(struct xfs_mount *mp, bhv_vnode_t **vpp, struct xfs_fid *xfid); int xfs_parseargs(struct xfs_mount *mp, char *options,