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Commit b8a327be authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-pull 

* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-pull: (64 commits)
  [XFS] Remove vn_revalidate calls in xfs.
  [XFS] Now that xfs_setattr is only used for attributes set from ->setattr
  [XFS] xfs_setattr currently doesn't just handle the attributes set through
  [XFS] fix use after free with external logs or real-time devices
  [XFS] A bug was found in xfs_bmap_add_extent_unwritten_real(). In a
  [XFS] fix compilation without CONFIG_PROC_FS
  [XFS] s/XFS_PURGE_INODE/IRELE/g s/VN_HOLD(XFS_ITOV())/IHOLD()/
  [XFS] fix mount option parsing in remount
  [XFS] Disable queue flag test in barrier check.
  [XFS] streamline init/exit path
  [XFS] Fix up problem when CONFIG_XFS_POSIX_ACL is not set and yet we still
  [XFS] Don't assert if trying to mount with blocksize > pagesize
  [XFS] Don't update mtime on rename source
  [XFS] Allow xfs_bmbt_split() to fallback to the lowspace allocator
  [XFS] Restore the lowspace extent allocator algorithm
  [XFS] use minleft when allocating in xfs_bmbt_split()
  [XFS] attrmulti cleanup
  [XFS] Check for invalid flags in xfs_attrlist_by_handle.
  [XFS] Fix CI lookup in leaf-form directories
  [XFS] Use the generic xattr methods.
  ...
parents 46bd58ea f13fae2d

fs/dcache.c

+102 −0
Original line number Diff line number Diff line
@@ -1220,6 +1220,107 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry) 
	return new;

}



/**

 * d_add_ci - lookup or allocate new dentry with case-exact name

 * @inode:  the inode case-insensitive lookup has found

 * @dentry: the negative dentry that was passed to the parent's lookup func

 * @name:   the case-exact name to be associated with the returned dentry

 *

 * This is to avoid filling the dcache with case-insensitive names to the

 * same inode, only the actual correct case is stored in the dcache for

 * case-insensitive filesystems.

 *

 * For a case-insensitive lookup match and if the the case-exact dentry

 * already exists in in the dcache, use it and return it.

 *

 * If no entry exists with the exact case name, allocate new dentry with

 * the exact case, and return the spliced entry.

 */

struct dentry *d_add_ci(struct inode *inode, struct dentry *dentry,

			struct qstr *name)

{

	int error;

	struct dentry *found;

	struct dentry *new;



	/* Does a dentry matching the name exist already? */

	found = d_hash_and_lookup(dentry->d_parent, name);

	/* If not, create it now and return */

	if (!found) {

		new = d_alloc(dentry->d_parent, name);

		if (!new) {

			error = -ENOMEM;

			goto err_out;

		}

		found = d_splice_alias(inode, new);

		if (found) {

			dput(new);

			return found;

		}

		return new;

	}

	/* Matching dentry exists, check if it is negative. */

	if (found->d_inode) {

		if (unlikely(found->d_inode != inode)) {

			/* This can't happen because bad inodes are unhashed. */

			BUG_ON(!is_bad_inode(inode));

			BUG_ON(!is_bad_inode(found->d_inode));

		}

		/*

		 * Already have the inode and the dentry attached, decrement

		 * the reference count to balance the iget() done

		 * earlier on.  We found the dentry using d_lookup() so it

		 * cannot be disconnected and thus we do not need to worry

		 * about any NFS/disconnectedness issues here.

		 */

		iput(inode);

		return found;

	}

	/*

	 * Negative dentry: instantiate it unless the inode is a directory and

	 * has a 'disconnected' dentry (i.e. IS_ROOT and DCACHE_DISCONNECTED),

	 * in which case d_move() that in place of the found dentry.

	 */

	if (!S_ISDIR(inode->i_mode)) {

		/* Not a directory; everything is easy. */

		d_instantiate(found, inode);

		return found;

	}

	spin_lock(&dcache_lock);

	if (list_empty(&inode->i_dentry)) {

		/*

		 * Directory without a 'disconnected' dentry; we need to do

		 * d_instantiate() by hand because it takes dcache_lock which

		 * we already hold.

		 */

		list_add(&found->d_alias, &inode->i_dentry);

		found->d_inode = inode;

		spin_unlock(&dcache_lock);

		security_d_instantiate(found, inode);

		return found;

	}

	/*

	 * Directory with a 'disconnected' dentry; get a reference to the

	 * 'disconnected' dentry.

	 */

	new = list_entry(inode->i_dentry.next, struct dentry, d_alias);

	dget_locked(new);

	spin_unlock(&dcache_lock);

	/* Do security vodoo. */

	security_d_instantiate(found, inode);

	/* Move new in place of found. */

	d_move(new, found);

	/* Balance the iget() we did above. */

	iput(inode);

	/* Throw away found. */

	dput(found);

	/* Use new as the actual dentry. */

	return new;



err_out:

	iput(inode);

	return ERR_PTR(error);

}



/**

 * d_lookup - search for a dentry
@@ -2254,6 +2355,7 @@ EXPORT_SYMBOL(d_path); 
EXPORT_SYMBOL(d_prune_aliases);

EXPORT_SYMBOL(d_rehash);

EXPORT_SYMBOL(d_splice_alias);

EXPORT_SYMBOL(d_add_ci);

EXPORT_SYMBOL(d_validate);

EXPORT_SYMBOL(dget_locked);

EXPORT_SYMBOL(dput);

fs/xfs/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -106,7 +106,8 @@ xfs-y += $(addprefix $(XFS_LINUX)/, \ 
				   xfs_iops.o \

				   xfs_lrw.o \

				   xfs_super.o \

				   xfs_vnode.o)

				   xfs_vnode.o \

				   xfs_xattr.o)



# Objects in support/

xfs-y				+= $(addprefix support/, \

fs/xfs/linux-2.6/kmem.c

+3 −3
Original line number Diff line number Diff line
@@ -90,7 +90,7 @@ kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize, 
}



void

kmem_free(void *ptr, size_t size)

kmem_free(const void *ptr)

{

	if (!is_vmalloc_addr(ptr)) {

		kfree(ptr);
@@ -100,7 +100,7 @@ kmem_free(void *ptr, size_t size) 
}



void *

kmem_realloc(void *ptr, size_t newsize, size_t oldsize,

kmem_realloc(const void *ptr, size_t newsize, size_t oldsize,

	     unsigned int __nocast flags)

{

	void	*new;
@@ -110,7 +110,7 @@ kmem_realloc(void *ptr, size_t newsize, size_t oldsize, 
		if (new)

			memcpy(new, ptr,

				((oldsize < newsize) ? oldsize : newsize));

		kmem_free(ptr, oldsize);

		kmem_free(ptr);

	}

	return new;

}

fs/xfs/linux-2.6/kmem.h

+2 −2
Original line number Diff line number Diff line
@@ -57,8 +57,8 @@ kmem_flags_convert(unsigned int __nocast flags) 
extern void *kmem_alloc(size_t, unsigned int __nocast);

extern void *kmem_zalloc(size_t, unsigned int __nocast);

extern void *kmem_zalloc_greedy(size_t *, size_t, size_t, unsigned int __nocast);

extern void *kmem_realloc(void *, size_t, size_t, unsigned int __nocast);

extern void  kmem_free(void *, size_t);

extern void *kmem_realloc(const void *, size_t, size_t, unsigned int __nocast);

extern void  kmem_free(const void *);



/*

 * Zone interfaces

fs/xfs/linux-2.6/xfs_aops.c

+2 −3
Original line number Diff line number Diff line
@@ -409,7 +409,6 @@ xfs_start_buffer_writeback( 
STATIC void

xfs_start_page_writeback(

	struct page		*page,

	struct writeback_control *wbc,

	int			clear_dirty,

	int			buffers)

{
@@ -858,7 +857,7 @@ xfs_convert_page( 
				done = 1;

			}

		}

		xfs_start_page_writeback(page, wbc, !page_dirty, count);

		xfs_start_page_writeback(page, !page_dirty, count);

	}



	return done;
@@ -1130,7 +1129,7 @@ xfs_page_state_convert( 
		SetPageUptodate(page);



	if (startio)

		xfs_start_page_writeback(page, wbc, 1, count);

		xfs_start_page_writeback(page, 1, count);



	if (ioend && iomap_valid) {

		offset = (iomap.iomap_offset + iomap.iomap_bsize - 1) >>