提交 79ecb043 编写于 作者: L Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  GFS2: Use MAX_LFS_FILESIZE for meta inode size
  GFS2: Fix gfs2_xattr_acl_chmod()
  GFS2: Fix locking bug in rename
  GFS2: Ensure uptodate inode size when using O_APPEND
......@@ -569,6 +569,40 @@ static int gfs2_fsync(struct file *file, struct dentry *dentry, int datasync)
return ret;
}
/**
* gfs2_file_aio_write - Perform a write to a file
* @iocb: The io context
* @iov: The data to write
* @nr_segs: Number of @iov segments
* @pos: The file position
*
* We have to do a lock/unlock here to refresh the inode size for
* O_APPEND writes, otherwise we can land up writing at the wrong
* offset. There is still a race, but provided the app is using its
* own file locking, this will make O_APPEND work as expected.
*
*/
static ssize_t gfs2_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
struct file *file = iocb->ki_filp;
if (file->f_flags & O_APPEND) {
struct dentry *dentry = file->f_dentry;
struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
struct gfs2_holder gh;
int ret;
ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh);
if (ret)
return ret;
gfs2_glock_dq_uninit(&gh);
}
return generic_file_aio_write(iocb, iov, nr_segs, pos);
}
#ifdef CONFIG_GFS2_FS_LOCKING_DLM
/**
......@@ -711,7 +745,7 @@ const struct file_operations gfs2_file_fops = {
.read = do_sync_read,
.aio_read = generic_file_aio_read,
.write = do_sync_write,
.aio_write = generic_file_aio_write,
.aio_write = gfs2_file_aio_write,
.unlocked_ioctl = gfs2_ioctl,
.mmap = gfs2_mmap,
.open = gfs2_open,
......@@ -741,7 +775,7 @@ const struct file_operations gfs2_file_fops_nolock = {
.read = do_sync_read,
.aio_read = generic_file_aio_read,
.write = do_sync_write,
.aio_write = generic_file_aio_write,
.aio_write = gfs2_file_aio_write,
.unlocked_ioctl = gfs2_ioctl,
.mmap = gfs2_mmap,
.open = gfs2_open,
......
......@@ -121,7 +121,7 @@ struct inode *gfs2_aspace_get(struct gfs2_sbd *sdp)
if (aspace) {
mapping_set_gfp_mask(aspace->i_mapping, GFP_NOFS);
aspace->i_mapping->a_ops = &aspace_aops;
aspace->i_size = ~0ULL;
aspace->i_size = MAX_LFS_FILESIZE;
ip = GFS2_I(aspace);
clear_bit(GIF_USER, &ip->i_flags);
insert_inode_hash(aspace);
......
......@@ -748,7 +748,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
struct gfs2_rgrpd *nrgd;
unsigned int num_gh;
int dir_rename = 0;
int alloc_required;
int alloc_required = 0;
unsigned int x;
int error;
......@@ -867,7 +867,9 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
goto out_gunlock;
}
alloc_required = error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name);
if (nip == NULL)
alloc_required = gfs2_diradd_alloc_required(ndir, &ndentry->d_name);
error = alloc_required;
if (error < 0)
goto out_gunlock;
error = 0;
......
......@@ -1296,6 +1296,7 @@ static int ea_acl_chmod_unstuffed(struct gfs2_inode *ip,
int gfs2_xattr_acl_chmod(struct gfs2_inode *ip, struct iattr *attr, char *data)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_ea_location el;
struct buffer_head *dibh;
int error;
......@@ -1305,16 +1306,17 @@ int gfs2_xattr_acl_chmod(struct gfs2_inode *ip, struct iattr *attr, char *data)
return error;
if (GFS2_EA_IS_STUFFED(el.el_ea)) {
error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + RES_EATTR, 0);
if (error)
return error;
gfs2_trans_add_bh(ip->i_gl, el.el_bh, 1);
memcpy(GFS2_EA2DATA(el.el_ea), data,
GFS2_EA_DATA_LEN(el.el_ea));
} else
error = gfs2_trans_begin(sdp, RES_DINODE + RES_EATTR, 0);
if (error == 0) {
gfs2_trans_add_bh(ip->i_gl, el.el_bh, 1);
memcpy(GFS2_EA2DATA(el.el_ea), data,
GFS2_EA_DATA_LEN(el.el_ea));
}
} else {
error = ea_acl_chmod_unstuffed(ip, el.el_ea, data);
}
brelse(el.el_bh);
if (error)
return error;
......@@ -1327,8 +1329,7 @@ int gfs2_xattr_acl_chmod(struct gfs2_inode *ip, struct iattr *attr, char *data)
brelse(dibh);
}
gfs2_trans_end(GFS2_SB(&ip->i_inode));
gfs2_trans_end(sdp);
return error;
}
......
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