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Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2

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* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2:
  ocfs2: export heartbeat thread pid via configfs
  ocfs2: always unmap in ocfs2_data_convert_worker()
  ocfs2: ignore NULL vfsmnt in ocfs2_should_update_atime()
  ocfs2: Allow direct I/O read past end of file
  ocfs2: don't print error in ocfs2_permission()
This commit is contained in:
Linus Torvalds 2006-12-30 12:02:53 -08:00
commit bfff6e92a3
4 changed files with 54 additions and 10 deletions
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24
fs/ocfs2/aops.c
View file

@ -540,8 +540,7 @@ static int ocfs2_direct_IO_get_blocks(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
int ret;
u64 vbo_max; /* file offset, max_blocks from iblock */
u64 p_blkno;
u64 p_blkno, inode_blocks;
int contig_blocks;
unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits;
unsigned long max_blocks = bh_result->b_size >> inode->i_blkbits;
@ -550,12 +549,23 @@ static int ocfs2_direct_IO_get_blocks(struct inode *inode, sector_t iblock,
* nicely aligned and of the right size, so there's no need
* for us to check any of that. */
vbo_max = ((u64)iblock + max_blocks) << blocksize_bits;
spin_lock(&OCFS2_I(inode)->ip_lock);
if ((iblock + max_blocks) >
ocfs2_clusters_to_blocks(inode->i_sb,
OCFS2_I(inode)->ip_clusters)) {
inode_blocks = ocfs2_clusters_to_blocks(inode->i_sb,
OCFS2_I(inode)->ip_clusters);
/*
* For a read which begins past the end of file, we return a hole.
*/
if (!create && (iblock >= inode_blocks)) {
spin_unlock(&OCFS2_I(inode)->ip_lock);
ret = 0;
goto bail;
}
/*
* Any write past EOF is not allowed because we'd be extending.
*/
if (create && (iblock + max_blocks) > inode_blocks) {
spin_unlock(&OCFS2_I(inode)->ip_lock);
ret = -EIO;
goto bail;

17
fs/ocfs2/cluster/heartbeat.c
View file

@ -1447,6 +1447,15 @@ static ssize_t o2hb_region_dev_write(struct o2hb_region *reg,
return ret;
}
static ssize_t o2hb_region_pid_read(struct o2hb_region *reg,
char *page)
{
if (!reg->hr_task)
return 0;
return sprintf(page, "%u\n", reg->hr_task->pid);
}
struct o2hb_region_attribute {
struct configfs_attribute attr;
ssize_t (*show)(struct o2hb_region *, char *);
@ -1485,11 +1494,19 @@ static struct o2hb_region_attribute o2hb_region_attr_dev = {
.store = o2hb_region_dev_write,
};
static struct o2hb_region_attribute o2hb_region_attr_pid = {
.attr = { .ca_owner = THIS_MODULE,
.ca_name = "pid",
.ca_mode = S_IRUGO | S_IRUSR },
.show = o2hb_region_pid_read,
};
static struct configfs_attribute *o2hb_region_attrs[] = {
&o2hb_region_attr_block_bytes.attr,
&o2hb_region_attr_start_block.attr,
&o2hb_region_attr_blocks.attr,
&o2hb_region_attr_dev.attr,
&o2hb_region_attr_pid.attr,
NULL,
};

10
fs/ocfs2/dlmglue.c
View file

@ -2718,6 +2718,15 @@ static int ocfs2_data_convert_worker(struct ocfs2_lock_res *lockres,
inode = ocfs2_lock_res_inode(lockres);
mapping = inode->i_mapping;
/*
* We need this before the filemap_fdatawrite() so that it can
* transfer the dirty bit from the PTE to the
* page. Unfortunately this means that even for EX->PR
* downconverts, we'll lose our mappings and have to build
* them up again.
*/
unmap_mapping_range(mapping, 0, 0, 0);
if (filemap_fdatawrite(mapping)) {
mlog(ML_ERROR, "Could not sync inode %llu for downconvert!",
(unsigned long long)OCFS2_I(inode)->ip_blkno);
@ -2725,7 +2734,6 @@ static int ocfs2_data_convert_worker(struct ocfs2_lock_res *lockres,
sync_mapping_buffers(mapping);
if (blocking == LKM_EXMODE) {
truncate_inode_pages(mapping, 0);
unmap_mapping_range(mapping, 0, 0, 0);
} else {
/* We only need to wait on the I/O if we're not also
* truncating pages because truncate_inode_pages waits

13
fs/ocfs2/file.c
View file

@ -149,6 +149,17 @@ int ocfs2_should_update_atime(struct inode *inode,
((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode)))
return 0;
/*
* We can be called with no vfsmnt structure - NFSD will
* sometimes do this.
*
* Note that our action here is different than touch_atime() -
* if we can't tell whether this is a noatime mount, then we
* don't know whether to trust the value of s_atime_quantum.
*/
if (vfsmnt == NULL)
return 0;
if ((vfsmnt->mnt_flags & MNT_NOATIME) ||
((vfsmnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode)))
return 0;
@ -966,8 +977,6 @@ int ocfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
}
ret = generic_permission(inode, mask, NULL);
if (ret)
mlog_errno(ret);
ocfs2_meta_unlock(inode, 0);
out: