[7] = GFS2_DIF_NOATIME,
[12] = GFS2_DIF_EXHASH,
[14] = GFS2_DIF_INHERIT_JDATA,
+ [17] = GFS2_DIF_TOPDIR,
};
static const u32 gfs2_to_fsflags[32] = {
[gfs2fl_AppendOnly] = FS_APPEND_FL,
[gfs2fl_NoAtime] = FS_NOATIME_FL,
[gfs2fl_ExHash] = FS_INDEX_FL,
+ [gfs2fl_TopLevel] = FS_TOPDIR_FL,
[gfs2fl_InheritJdata] = FS_JOURNAL_DATA_FL,
};
GFS2_DIF_NOATIME| \
GFS2_DIF_SYNC| \
GFS2_DIF_SYSTEM| \
+ GFS2_DIF_TOPDIR| \
GFS2_DIF_INHERIT_JDATA)
/**
gfsflags = fsflags_cvt(fsflags_to_gfs2, fsflags);
if (!S_ISDIR(inode->i_mode)) {
+ gfsflags &= ~GFS2_DIF_TOPDIR;
if (gfsflags & GFS2_DIF_INHERIT_JDATA)
gfsflags ^= (GFS2_DIF_JDATA | GFS2_DIF_INHERIT_JDATA);
return do_gfs2_set_flags(filp, gfsflags, ~0);
return -ENOTTY;
}
+/**
+ * gfs2_size_hint - Give a hint to the size of a write request
+ * @file: The struct file
+ * @offset: The file offset of the write
+ * @size: The length of the write
+ *
+ * When we are about to do a write, this function records the total
+ * write size in order to provide a suitable hint to the lower layers
+ * about how many blocks will be required.
+ *
+ */
+
+static void gfs2_size_hint(struct file *filep, loff_t offset, size_t size)
+{
+ struct inode *inode = filep->f_dentry->d_inode;
+ struct gfs2_sbd *sdp = GFS2_SB(inode);
+ struct gfs2_inode *ip = GFS2_I(inode);
+ size_t blks = (size + sdp->sd_sb.sb_bsize - 1) >> sdp->sd_sb.sb_bsize_shift;
+ int hint = min_t(size_t, INT_MAX, blks);
+
+ atomic_set(&ip->i_res->rs_sizehint, hint);
+}
+
/**
* gfs2_allocate_page_backing - Use bmap to allocate blocks
* @page: The (locked) page to allocate backing for
u64 pos = page->index << PAGE_CACHE_SHIFT;
unsigned int data_blocks, ind_blocks, rblocks;
struct gfs2_holder gh;
- struct gfs2_qadata *qa;
loff_t size;
int ret;
- /* Wait if fs is frozen. This is racy so we check again later on
- * and retry if the fs has been frozen after the page lock has
- * been acquired
- */
- vfs_check_frozen(inode->i_sb, SB_FREEZE_WRITE);
+ sb_start_pagefault(inode->i_sb);
+
+ /* Update file times before taking page lock */
+ file_update_time(vma->vm_file);
+
+ ret = gfs2_rs_alloc(ip);
+ if (ret)
+ return ret;
+
+ gfs2_size_hint(vma->vm_file, pos, PAGE_CACHE_SIZE);
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
ret = gfs2_glock_nq(&gh);
goto out_unlock;
}
- ret = -ENOMEM;
- qa = gfs2_qadata_get(ip);
- if (qa == NULL)
+ ret = gfs2_rindex_update(sdp);
+ if (ret)
goto out_unlock;
ret = gfs2_quota_lock_check(ip);
if (ret)
- goto out_alloc_put;
+ goto out_unlock;
gfs2_write_calc_reserv(ip, PAGE_CACHE_SIZE, &data_blocks, &ind_blocks);
ret = gfs2_inplace_reserve(ip, data_blocks + ind_blocks);
if (ret)
gfs2_inplace_release(ip);
out_quota_unlock:
gfs2_quota_unlock(ip);
-out_alloc_put:
- gfs2_qadata_put(ip);
out_unlock:
gfs2_glock_dq(&gh);
out:
gfs2_holder_uninit(&gh);
if (ret == 0) {
set_page_dirty(page);
- /* This check must be post dropping of transaction lock */
- if (inode->i_sb->s_frozen == SB_UNFROZEN) {
- wait_on_page_writeback(page);
- } else {
- ret = -EAGAIN;
- unlock_page(page);
- }
+ wait_on_page_writeback(page);
}
+ sb_end_pagefault(inode->i_sb);
return block_page_mkwrite_return(ret);
}
static int gfs2_release(struct inode *inode, struct file *file)
{
- struct gfs2_sbd *sdp = inode->i_sb->s_fs_info;
- struct gfs2_file *fp;
+ struct gfs2_inode *ip = GFS2_I(inode);
- fp = file->private_data;
+ kfree(file->private_data);
file->private_data = NULL;
- if (gfs2_assert_warn(sdp, fp))
- return -EIO;
-
- kfree(fp);
+ if ((file->f_mode & FMODE_WRITE) &&
+ (atomic_read(&inode->i_writecount) == 1))
+ gfs2_rs_delete(ip);
return 0;
}
unsigned long nr_segs, loff_t pos)
{
struct file *file = iocb->ki_filp;
+ size_t writesize = iov_length(iov, nr_segs);
+ struct dentry *dentry = file->f_dentry;
+ struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
+ struct gfs2_sbd *sdp;
+ int ret;
+
+ sdp = GFS2_SB(file->f_mapping->host);
+ ret = gfs2_rs_alloc(ip);
+ if (ret)
+ return ret;
+
+ gfs2_size_hint(file, pos, writesize);
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)
struct gfs2_inode *ip = GFS2_I(inode);
unsigned int data_blocks = 0, ind_blocks = 0, rblocks;
loff_t bytes, max_bytes;
- struct gfs2_qadata *qa;
int error;
const loff_t pos = offset;
const loff_t count = len;
if (bytes == 0)
bytes = sdp->sd_sb.sb_bsize;
+ error = gfs2_rs_alloc(ip);
+ if (error)
+ return error;
+
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &ip->i_gh);
error = gfs2_glock_nq(&ip->i_gh);
if (unlikely(error))
goto out_uninit;
+ gfs2_size_hint(file, offset, len);
+
while (len > 0) {
if (len < bytes)
bytes = len;
offset += bytes;
continue;
}
- qa = gfs2_qadata_get(ip);
- if (!qa) {
- error = -ENOMEM;
- goto out_unlock;
- }
-
error = gfs2_quota_lock_check(ip);
if (error)
- goto out_alloc_put;
+ goto out_unlock;
retry:
gfs2_write_calc_reserv(ip, bytes, &data_blocks, &ind_blocks);
offset += max_bytes;
gfs2_inplace_release(ip);
gfs2_quota_unlock(ip);
- gfs2_qadata_put(ip);
}
if (error == 0)
gfs2_inplace_release(ip);
out_qunlock:
gfs2_quota_unlock(ip);
-out_alloc_put:
- gfs2_qadata_put(ip);
out_unlock:
gfs2_glock_dq(&ip->i_gh);
out_uninit:
projects / deliverable / linux.git / blobdiff