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author | Steven Whitehouse <swhiteho@redhat.com> | 2011-05-13 10:34:59 +0100 |
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committer | Steven Whitehouse <swhiteho@redhat.com> | 2011-05-13 10:34:59 +0100 |
commit | 160b4026dc3e75c0693d0123eca805e88cd200b6 (patch) | |
tree | 32aa1a6e23b09be65cabdbcd6be2a8fc3d50527f /fs/gfs2 | |
parent | e2d0a13bba051d7a9618b0952d91fac68175a71a (diff) | |
download | linux-160b4026dc3e75c0693d0123eca805e88cd200b6.tar.gz linux-160b4026dc3e75c0693d0123eca805e88cd200b6.tar.bz2 linux-160b4026dc3e75c0693d0123eca805e88cd200b6.zip |
GFS2: Clean up symlink creation
This moves the symlink specific parts of inode creation
into the function where we initialise the rest of the
dinode. As a result we have one less place where we need
to look up the inode's buffer.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2')
-rw-r--r-- | fs/gfs2/inode.c | 65 | ||||
-rw-r--r-- | fs/gfs2/inode.h | 3 |
2 files changed, 29 insertions, 39 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 4aee9dd464f7..c2a3d9cd0bc8 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -443,7 +443,8 @@ static void gfs2_init_dir(struct buffer_head *dibh, const struct gfs2_inode *par static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, const struct gfs2_inum_host *inum, unsigned int mode, unsigned int uid, unsigned int gid, - const u64 *generation, dev_t dev, struct buffer_head **bhp) + const u64 *generation, dev_t dev, const char *symname, + unsigned size, struct buffer_head **bhp) { struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); struct gfs2_dinode *di; @@ -462,7 +463,7 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, di->di_uid = cpu_to_be32(uid); di->di_gid = cpu_to_be32(gid); di->di_nlink = 0; - di->di_size = 0; + di->di_size = cpu_to_be64(size); di->di_blocks = cpu_to_be64(1); di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(tv.tv_sec); di->di_major = cpu_to_be32(MAJOR(dev)); @@ -483,18 +484,24 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, di->di_mtime_nsec = cpu_to_be32(tv.tv_nsec); di->di_ctime_nsec = cpu_to_be32(tv.tv_nsec); memset(&di->di_reserved, 0, sizeof(di->di_reserved)); - - if (S_ISREG(mode)) { + + switch(mode & S_IFMT) { + case S_IFREG: if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) || gfs2_tune_get(sdp, gt_new_files_jdata)) di->di_flags |= cpu_to_be32(GFS2_DIF_JDATA); - } else if (S_ISDIR(mode)) { + break; + case S_IFDIR: di->di_flags |= cpu_to_be32(dip->i_diskflags & GFS2_DIF_INHERIT_JDATA); di->di_flags |= cpu_to_be32(GFS2_DIF_JDATA); di->di_size = cpu_to_be64(sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)); di->di_entries = cpu_to_be32(2); gfs2_init_dir(dibh, dip); + break; + case S_IFLNK: + memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname, size); + break; } set_buffer_uptodate(dibh); @@ -504,7 +511,8 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, unsigned int mode, const struct gfs2_inum_host *inum, - const u64 *generation, dev_t dev, struct buffer_head **bhp) + const u64 *generation, dev_t dev, const char *symname, + unsigned int size, struct buffer_head **bhp) { struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); unsigned int uid, gid; @@ -526,7 +534,7 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, if (error) goto out_quota; - init_dinode(dip, gl, inum, mode, uid, gid, generation, dev, bhp); + init_dinode(dip, gl, inum, mode, uid, gid, generation, dev, symname, size, bhp); gfs2_quota_change(dip, +1, uid, gid); gfs2_trans_end(sdp); @@ -651,8 +659,10 @@ static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip, * Returns: An inode */ -struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, - unsigned int mode, dev_t dev) +static struct inode *gfs2_createi(struct gfs2_holder *ghs, + const struct qstr *name, unsigned int mode, + dev_t dev, const char *symname, + unsigned int size) { struct inode *inode = NULL; struct gfs2_inode *dip = ghs->gh_gl->gl_object; @@ -685,7 +695,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, if (error) goto fail_gunlock; - error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev, &bh); + error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev, symname, size, &bh); if (error) goto fail_gunlock2; @@ -745,7 +755,7 @@ static int gfs2_create(struct inode *dir, struct dentry *dentry, gfs2_holder_init(dip->i_gl, 0, 0, ghs); for (;;) { - inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode, 0); + inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode, 0, NULL, 0); if (!IS_ERR(inode)) { gfs2_trans_end(sdp); if (dip->i_alloc->al_rgd) @@ -1140,40 +1150,24 @@ out_parent: static int gfs2_symlink(struct inode *dir, struct dentry *dentry, const char *symname) { - struct gfs2_inode *dip = GFS2_I(dir), *ip; + struct gfs2_inode *dip = GFS2_I(dir); struct gfs2_sbd *sdp = GFS2_SB(dir); struct gfs2_holder ghs[2]; struct inode *inode; - struct buffer_head *dibh; - int size; - int error; + unsigned int size; - /* Must be stuffed with a null terminator for gfs2_follow_link() */ size = strlen(symname); if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1) return -ENAMETOOLONG; gfs2_holder_init(dip->i_gl, 0, 0, ghs); - inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO, 0); + inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO, 0, symname, size); if (IS_ERR(inode)) { gfs2_holder_uninit(ghs); return PTR_ERR(inode); } - ip = ghs[1].gh_gl->gl_object; - - i_size_write(inode, size); - - error = gfs2_meta_inode_buffer(ip, &dibh); - - if (!gfs2_assert_withdraw(sdp, !error)) { - gfs2_dinode_out(ip, dibh->b_data); - memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname, - size); - brelse(dibh); - } - gfs2_trans_end(sdp); if (dip->i_alloc->al_rgd) gfs2_inplace_release(dip); @@ -1206,7 +1200,7 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) gfs2_holder_init(dip->i_gl, 0, 0, ghs); - inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode, 0); + inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode, 0, NULL, 0); if (IS_ERR(inode)) { gfs2_holder_uninit(ghs); return PTR_ERR(inode); @@ -1245,7 +1239,7 @@ static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode, gfs2_holder_init(dip->i_gl, 0, 0, ghs); - inode = gfs2_createi(ghs, &dentry->d_name, mode, dev); + inode = gfs2_createi(ghs, &dentry->d_name, mode, dev, NULL, 0); if (IS_ERR(inode)) { gfs2_holder_uninit(ghs); return PTR_ERR(inode); @@ -1572,7 +1566,7 @@ static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) struct gfs2_inode *ip = GFS2_I(dentry->d_inode); struct gfs2_holder i_gh; struct buffer_head *dibh; - unsigned int x, size; + unsigned int size; char *buf; int error; @@ -1597,12 +1591,11 @@ static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) goto out; } - x = size + 1; - buf = kmalloc(x, GFP_NOFS); + buf = kzalloc(size + 1, GFP_NOFS); if (!buf) buf = ERR_PTR(-ENOMEM); else - memcpy(buf, dibh->b_data + sizeof(struct gfs2_dinode), x); + memcpy(buf, dibh->b_data + sizeof(struct gfs2_dinode), size); brelse(dibh); out: gfs2_glock_dq_uninit(&i_gh); diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h index 7ed60aa1b61f..31606076f701 100644 --- a/fs/gfs2/inode.h +++ b/fs/gfs2/inode.h @@ -108,9 +108,6 @@ extern int gfs2_inode_refresh(struct gfs2_inode *ip); extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name, int is_root); -extern struct inode *gfs2_createi(struct gfs2_holder *ghs, - const struct qstr *name, - unsigned int mode, dev_t dev); extern int gfs2_permission(struct inode *inode, int mask, unsigned int flags); extern int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr); extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name); |