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Commit 60ad4466 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (60 commits)
  ext4: prevent memory leaks from ext4_mb_init_backend() on error path
  ext4: use EXT4_BAD_INO for buddy cache to avoid colliding with valid inode #
  ext4: use ext4_msg() instead of printk in mballoc
  ext4: use ext4_kvzalloc()/ext4_kvmalloc() for s_group_desc and s_group_info
  ext4: introduce ext4_kvmalloc(), ext4_kzalloc(), and ext4_kvfree()
  ext4: use the correct error exit path in ext4_init_inode_table()
  ext4: add missing kfree() on error return path in add_new_gdb()
  ext4: change umode_t in tracepoint headers to be an explicit __u16
  ext4: fix races in ext4_sync_parent()
  ext4: Fix overflow caused by missing cast in ext4_fallocate()
  ext4: add action of moving index in ext4_ext_rm_idx for Punch Hole
  ext4: simplify parameters of reserve_backup_gdb()
  ext4: simplify parameters of add_new_gdb()
  ext4: remove lock_buffer in bclean() and setup_new_group_blocks()
  ext4: simplify journal handling in setup_new_group_blocks()
  ext4: let setup_new_group_blocks() set multiple bits at a time
  ext4: fix a typo in ext4_group_extend()
  ext4: let ext4_group_add_blocks() handle 0 blocks quickly
  ext4: let ext4_group_add_blocks() return an error code
  ext4: rename ext4_add_groupblocks() to ext4_group_add_blocks()
  ...

Fix up conflict in fs/ext4/inode.c: commit aacfc19c ("fs: simplify
the blockdev_direct_IO prototype") had changed the ext4_ind_direct_IO()
function for the new simplified calling convention, while commit
dae1e52c ("ext4: move ext4_ind_* functions from inode.c to
indirect.c") moved the function to another file.
parents 1b8e9499 79a77c5a

fs/ext4/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -7,7 +7,7 @@ obj-$(CONFIG_EXT4_FS) += ext4.o 
ext4-y	:= balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o page-io.o \

		ioctl.o namei.o super.o symlink.o hash.o resize.o extents.o \

		ext4_jbd2.o migrate.o mballoc.o block_validity.o move_extent.o \

		mmp.o

		mmp.o indirect.o



ext4-$(CONFIG_EXT4_FS_XATTR)		+= xattr.o xattr_user.o xattr_trusted.o

ext4-$(CONFIG_EXT4_FS_POSIX_ACL)	+= acl.o

fs/ext4/balloc.c

+48 −0
Original line number Diff line number Diff line
@@ -620,3 +620,51 @@ unsigned long ext4_bg_num_gdb(struct super_block *sb, ext4_group_t group) 


}



/**

 *	ext4_inode_to_goal_block - return a hint for block allocation

 *	@inode: inode for block allocation

 *

 *	Return the ideal location to start allocating blocks for a

 *	newly created inode.

 */

ext4_fsblk_t ext4_inode_to_goal_block(struct inode *inode)

{

	struct ext4_inode_info *ei = EXT4_I(inode);

	ext4_group_t block_group;

	ext4_grpblk_t colour;

	int flex_size = ext4_flex_bg_size(EXT4_SB(inode->i_sb));

	ext4_fsblk_t bg_start;

	ext4_fsblk_t last_block;



	block_group = ei->i_block_group;

	if (flex_size >= EXT4_FLEX_SIZE_DIR_ALLOC_SCHEME) {

		/*

		 * If there are at least EXT4_FLEX_SIZE_DIR_ALLOC_SCHEME

		 * block groups per flexgroup, reserve the first block

		 * group for directories and special files.  Regular

		 * files will start at the second block group.  This

		 * tends to speed up directory access and improves

		 * fsck times.

		 */

		block_group &= ~(flex_size-1);

		if (S_ISREG(inode->i_mode))

			block_group++;

	}

	bg_start = ext4_group_first_block_no(inode->i_sb, block_group);

	last_block = ext4_blocks_count(EXT4_SB(inode->i_sb)->s_es) - 1;



	/*

	 * If we are doing delayed allocation, we don't need take

	 * colour into account.

	 */

	if (test_opt(inode->i_sb, DELALLOC))

		return bg_start;



	if (bg_start + EXT4_BLOCKS_PER_GROUP(inode->i_sb) <= last_block)

		colour = (current->pid % 16) *

			(EXT4_BLOCKS_PER_GROUP(inode->i_sb) / 16);

	else

		colour = (current->pid % 16) * ((last_block - bg_start) / 16);

	return bg_start + colour;

}

fs/ext4/block_validity.c

+21 −0
Original line number Diff line number Diff line
@@ -246,3 +246,24 @@ int ext4_data_block_valid(struct ext4_sb_info *sbi, ext4_fsblk_t start_blk, 
	return 1;

}



int ext4_check_blockref(const char *function, unsigned int line,

			struct inode *inode, __le32 *p, unsigned int max)

{

	struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;

	__le32 *bref = p;

	unsigned int blk;



	while (bref < p+max) {

		blk = le32_to_cpu(*bref++);

		if (blk &&

		    unlikely(!ext4_data_block_valid(EXT4_SB(inode->i_sb),

						    blk, 1))) {

			es->s_last_error_block = cpu_to_le64(blk);

			ext4_error_inode(inode, function, line, blk,

					 "invalid block");

			return -EIO;

		}

	}

	return 0;

}

fs/ext4/ext4.h

+52 −3
Original line number Diff line number Diff line
@@ -526,6 +526,7 @@ struct ext4_new_group_data { 
#define EXT4_FREE_BLOCKS_METADATA	0x0001

#define EXT4_FREE_BLOCKS_FORGET		0x0002

#define EXT4_FREE_BLOCKS_VALIDATED	0x0004

#define EXT4_FREE_BLOCKS_NO_QUOT_UPDATE	0x0008



/*

 * ioctl commands
@@ -939,6 +940,8 @@ struct ext4_inode_info { 
#define ext4_find_next_zero_bit		find_next_zero_bit_le

#define ext4_find_next_bit		find_next_bit_le



extern void ext4_set_bits(void *bm, int cur, int len);



/*

 * Maximal mount counts between two filesystem checks

 */
@@ -1126,7 +1129,8 @@ struct ext4_sb_info { 
	struct journal_s *s_journal;

	struct list_head s_orphan;

	struct mutex s_orphan_lock;

	struct mutex s_resize_lock;

	unsigned long s_resize_flags;		/* Flags indicating if there

						   is a resizer */

	unsigned long s_commit_interval;

	u32 s_max_batch_time;

	u32 s_min_batch_time;
@@ -1214,6 +1218,9 @@ struct ext4_sb_info { 


	/* Kernel thread for multiple mount protection */

	struct task_struct *s_mmp_tsk;



	/* record the last minlen when FITRIM is called. */

	atomic_t s_last_trim_minblks;

};



static inline struct ext4_sb_info *EXT4_SB(struct super_block *sb)
@@ -1743,6 +1750,7 @@ extern unsigned ext4_init_block_bitmap(struct super_block *sb, 
				       struct ext4_group_desc *desc);

#define ext4_free_blocks_after_init(sb, group, desc)			\

		ext4_init_block_bitmap(sb, NULL, group, desc)

ext4_fsblk_t ext4_inode_to_goal_block(struct inode *);



/* dir.c */

extern int __ext4_check_dir_entry(const char *, unsigned int, struct inode *,
@@ -1793,7 +1801,7 @@ extern void ext4_free_blocks(handle_t *handle, struct inode *inode, 
			     unsigned long count, int flags);

extern int ext4_mb_add_groupinfo(struct super_block *sb,

		ext4_group_t i, struct ext4_group_desc *desc);

extern void ext4_add_groupblocks(handle_t *handle, struct super_block *sb,

extern int ext4_group_add_blocks(handle_t *handle, struct super_block *sb,

				ext4_fsblk_t block, unsigned long count);

extern int ext4_trim_fs(struct super_block *, struct fstrim_range *);
@@ -1834,6 +1842,17 @@ extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); 
extern qsize_t *ext4_get_reserved_space(struct inode *inode);

extern void ext4_da_update_reserve_space(struct inode *inode,

					int used, int quota_claim);



/* indirect.c */

extern int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,

				struct ext4_map_blocks *map, int flags);

extern ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb,

				const struct iovec *iov, loff_t offset,

				unsigned long nr_segs);

extern int ext4_ind_calc_metadata_amount(struct inode *inode, sector_t lblock);

extern int ext4_ind_trans_blocks(struct inode *inode, int nrblocks, int chunk);

extern void ext4_ind_truncate(struct inode *inode);



/* ioctl.c */

extern long ext4_ioctl(struct file *, unsigned int, unsigned long);

extern long ext4_compat_ioctl(struct file *, unsigned int, unsigned long);
@@ -1855,6 +1874,9 @@ extern int ext4_group_extend(struct super_block *sb, 
				ext4_fsblk_t n_blocks_count);



/* super.c */

extern void *ext4_kvmalloc(size_t size, gfp_t flags);

extern void *ext4_kvzalloc(size_t size, gfp_t flags);

extern void ext4_kvfree(void *ptr);

extern void __ext4_error(struct super_block *, const char *, unsigned int,

			 const char *, ...)

	__attribute__ ((format (printf, 4, 5)));
@@ -2068,10 +2090,18 @@ struct ext4_group_info { 
};



#define EXT4_GROUP_INFO_NEED_INIT_BIT		0

#define EXT4_GROUP_INFO_WAS_TRIMMED_BIT		1



#define EXT4_MB_GRP_NEED_INIT(grp)	\

	(test_bit(EXT4_GROUP_INFO_NEED_INIT_BIT, &((grp)->bb_state)))



#define EXT4_MB_GRP_WAS_TRIMMED(grp)	\

	(test_bit(EXT4_GROUP_INFO_WAS_TRIMMED_BIT, &((grp)->bb_state)))

#define EXT4_MB_GRP_SET_TRIMMED(grp)	\

	(set_bit(EXT4_GROUP_INFO_WAS_TRIMMED_BIT, &((grp)->bb_state)))

#define EXT4_MB_GRP_CLEAR_TRIMMED(grp)	\

	(clear_bit(EXT4_GROUP_INFO_WAS_TRIMMED_BIT, &((grp)->bb_state)))



#define EXT4_MAX_CONTENTION		8

#define EXT4_CONTENTION_THRESHOLD	2
@@ -2122,6 +2152,19 @@ static inline void ext4_mark_super_dirty(struct super_block *sb) 
		sb->s_dirt =1;

}



/*

 * Block validity checking

 */

#define ext4_check_indirect_blockref(inode, bh)				\

	ext4_check_blockref(__func__, __LINE__, inode,			\

			    (__le32 *)(bh)->b_data,			\

			    EXT4_ADDR_PER_BLOCK((inode)->i_sb))



#define ext4_ind_check_inode(inode)					\

	ext4_check_blockref(__func__, __LINE__, inode,			\

			    EXT4_I(inode)->i_data,			\

			    EXT4_NDIR_BLOCKS)



/*

 * Inodes and files operations

 */
@@ -2151,6 +2194,8 @@ extern void ext4_exit_system_zone(void); 
extern int ext4_data_block_valid(struct ext4_sb_info *sbi,

				 ext4_fsblk_t start_blk,

				 unsigned int count);

extern int ext4_check_blockref(const char *, unsigned int,

			       struct inode *, __le32 *, unsigned int);



/* extents.c */

extern int ext4_ext_tree_init(handle_t *handle, struct inode *);
@@ -2230,6 +2275,10 @@ static inline void set_bitmap_uptodate(struct buffer_head *bh) 
extern wait_queue_head_t ext4__ioend_wq[EXT4_WQ_HASH_SZ];

extern struct mutex ext4__aio_mutex[EXT4_WQ_HASH_SZ];



#define EXT4_RESIZING	0

extern int ext4_resize_begin(struct super_block *sb);

extern void ext4_resize_end(struct super_block *sb);



#endif	/* __KERNEL__ */



#endif	/* _EXT4_H */

fs/ext4/extents.c

+59 −70
Original line number Diff line number Diff line
@@ -114,12 +114,6 @@ static ext4_fsblk_t ext4_ext_find_goal(struct inode *inode, 
			      struct ext4_ext_path *path,

			      ext4_lblk_t block)

{

	struct ext4_inode_info *ei = EXT4_I(inode);

	ext4_fsblk_t bg_start;

	ext4_fsblk_t last_block;

	ext4_grpblk_t colour;

	ext4_group_t block_group;

	int flex_size = ext4_flex_bg_size(EXT4_SB(inode->i_sb));

	int depth;



	if (path) {
@@ -161,36 +155,7 @@ static ext4_fsblk_t ext4_ext_find_goal(struct inode *inode, 
	}



	/* OK. use inode's group */

	block_group = ei->i_block_group;

	if (flex_size >= EXT4_FLEX_SIZE_DIR_ALLOC_SCHEME) {

		/*

		 * If there are at least EXT4_FLEX_SIZE_DIR_ALLOC_SCHEME

		 * block groups per flexgroup, reserve the first block

		 * group for directories and special files.  Regular

		 * files will start at the second block group.  This

		 * tends to speed up directory access and improves

		 * fsck times.

		 */

		block_group &= ~(flex_size-1);

		if (S_ISREG(inode->i_mode))

			block_group++;

	}

	bg_start = ext4_group_first_block_no(inode->i_sb, block_group);

	last_block = ext4_blocks_count(EXT4_SB(inode->i_sb)->s_es) - 1;



	/*

	 * If we are doing delayed allocation, we don't need take

	 * colour into account.

	 */

	if (test_opt(inode->i_sb, DELALLOC))

		return bg_start;



	if (bg_start + EXT4_BLOCKS_PER_GROUP(inode->i_sb) <= last_block)

		colour = (current->pid % 16) *

			(EXT4_BLOCKS_PER_GROUP(inode->i_sb) / 16);

	else

		colour = (current->pid % 16) * ((last_block - bg_start) / 16);

	return bg_start + colour + block;

	return ext4_inode_to_goal_block(inode);

}



/*
@@ -776,6 +741,16 @@ static int ext4_ext_insert_index(handle_t *handle, struct inode *inode, 
				 logical, le32_to_cpu(curp->p_idx->ei_block));

		return -EIO;

	}



	if (unlikely(le16_to_cpu(curp->p_hdr->eh_entries)

			     >= le16_to_cpu(curp->p_hdr->eh_max))) {

		EXT4_ERROR_INODE(inode,

				 "eh_entries %d >= eh_max %d!",

				 le16_to_cpu(curp->p_hdr->eh_entries),

				 le16_to_cpu(curp->p_hdr->eh_max));

		return -EIO;

	}



	len = EXT_MAX_INDEX(curp->p_hdr) - curp->p_idx;

	if (logical > le32_to_cpu(curp->p_idx->ei_block)) {

		/* insert after */
@@ -805,13 +780,6 @@ static int ext4_ext_insert_index(handle_t *handle, struct inode *inode, 
	ext4_idx_store_pblock(ix, ptr);

	le16_add_cpu(&curp->p_hdr->eh_entries, 1);



	if (unlikely(le16_to_cpu(curp->p_hdr->eh_entries)

			     > le16_to_cpu(curp->p_hdr->eh_max))) {

		EXT4_ERROR_INODE(inode,

				 "logical %d == ei_block %d!",

				 logical, le32_to_cpu(curp->p_idx->ei_block));

		return -EIO;

	}

	if (unlikely(ix > EXT_LAST_INDEX(curp->p_hdr))) {

		EXT4_ERROR_INODE(inode, "ix > EXT_LAST_INDEX!");

		return -EIO;
@@ -1446,8 +1414,7 @@ ext4_ext_next_allocated_block(struct ext4_ext_path *path) 
 * ext4_ext_next_leaf_block:

 * returns first allocated block from next leaf or EXT_MAX_BLOCKS

 */

static ext4_lblk_t ext4_ext_next_leaf_block(struct inode *inode,

					struct ext4_ext_path *path)

static ext4_lblk_t ext4_ext_next_leaf_block(struct ext4_ext_path *path)

{

	int depth;
@@ -1757,7 +1724,6 @@ int ext4_ext_insert_extent(handle_t *handle, struct inode *inode, 
		goto merge;

	}



repeat:

	depth = ext_depth(inode);

	eh = path[depth].p_hdr;

	if (le16_to_cpu(eh->eh_entries) < le16_to_cpu(eh->eh_max))
@@ -1765,9 +1731,10 @@ repeat: 


	/* probably next leaf has space for us? */

	fex = EXT_LAST_EXTENT(eh);

	next = ext4_ext_next_leaf_block(inode, path);

	if (le32_to_cpu(newext->ee_block) > le32_to_cpu(fex->ee_block)

	    && next != EXT_MAX_BLOCKS) {

	next = EXT_MAX_BLOCKS;

	if (le32_to_cpu(newext->ee_block) > le32_to_cpu(fex->ee_block))

		next = ext4_ext_next_leaf_block(path);

	if (next != EXT_MAX_BLOCKS) {

		ext_debug("next leaf block - %d\n", next);

		BUG_ON(npath != NULL);

		npath = ext4_ext_find_extent(inode, next, NULL);
@@ -1779,7 +1746,7 @@ repeat: 
			ext_debug("next leaf isn't full(%d)\n",

				  le16_to_cpu(eh->eh_entries));

			path = npath;

			goto repeat;

			goto has_space;

		}

		ext_debug("next leaf has no free space(%d,%d)\n",

			  le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max));
@@ -1839,7 +1806,7 @@ has_space: 
				ext4_ext_pblock(newext),

				ext4_ext_is_uninitialized(newext),

				ext4_ext_get_actual_len(newext),

				nearex, len, nearex + 1, nearex + 2);

				nearex, len, nearex, nearex + 1);

		memmove(nearex + 1, nearex, len);

		path[depth].p_ext = nearex;

	}
@@ -2052,7 +2019,7 @@ ext4_ext_put_gap_in_cache(struct inode *inode, struct ext4_ext_path *path, 
}



/*

 * ext4_ext_in_cache()

 * ext4_ext_check_cache()

 * Checks to see if the given block is in the cache.

 * If it is, the cached extent is stored in the given

 * cache extent pointer.  If the cached extent is a hole,
@@ -2134,8 +2101,6 @@ ext4_ext_in_cache(struct inode *inode, ext4_lblk_t block, 
/*

 * ext4_ext_rm_idx:

 * removes index from the index block.

 * It's used in truncate case only, thus all requests are for

 * last index in the block only.

 */

static int ext4_ext_rm_idx(handle_t *handle, struct inode *inode,

			struct ext4_ext_path *path)
@@ -2153,6 +2118,13 @@ static int ext4_ext_rm_idx(handle_t *handle, struct inode *inode, 
	err = ext4_ext_get_access(handle, inode, path);

	if (err)

		return err;



	if (path->p_idx != EXT_LAST_INDEX(path->p_hdr)) {

		int len = EXT_LAST_INDEX(path->p_hdr) - path->p_idx;

		len *= sizeof(struct ext4_extent_idx);

		memmove(path->p_idx, path->p_idx + 1, len);

	}



	le16_add_cpu(&path->p_hdr->eh_entries, -1);

	err = ext4_ext_dirty(handle, inode, path);

	if (err)
@@ -2534,8 +2506,7 @@ ext4_ext_more_to_rm(struct ext4_ext_path *path) 
	return 1;

}



static int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start,

				ext4_lblk_t end)

static int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start)

{

	struct super_block *sb = inode->i_sb;

	int depth = ext_depth(inode);
@@ -2575,7 +2546,7 @@ again: 
		if (i == depth) {

			/* this is leaf block */

			err = ext4_ext_rm_leaf(handle, inode, path,

					start, end);

					start, EXT_MAX_BLOCKS - 1);

			/* root level has p_bh == NULL, brelse() eats this */

			brelse(path[i].p_bh);

			path[i].p_bh = NULL;
@@ -3107,12 +3078,10 @@ static int ext4_convert_unwritten_extents_endio(handle_t *handle, 
					      struct ext4_ext_path *path)

{

	struct ext4_extent *ex;

	struct ext4_extent_header *eh;

	int depth;

	int err = 0;



	depth = ext_depth(inode);

	eh = path[depth].p_hdr;

	ex = path[depth].p_ext;



	ext_debug("ext4_convert_unwritten_extents_endio: inode %lu, logical"
@@ -3357,8 +3326,8 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, 
	trace_ext4_ext_map_blocks_enter(inode, map->m_lblk, map->m_len, flags);



	/* check in cache */

	if (ext4_ext_in_cache(inode, map->m_lblk, &newex) &&

		((flags & EXT4_GET_BLOCKS_PUNCH_OUT_EXT) == 0)) {

	if (!(flags & EXT4_GET_BLOCKS_PUNCH_OUT_EXT) &&

		ext4_ext_in_cache(inode, map->m_lblk, &newex)) {

		if (!newex.ee_start_lo && !newex.ee_start_hi) {

			if ((flags & EXT4_GET_BLOCKS_CREATE) == 0) {

				/*
@@ -3497,8 +3466,27 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, 


			ext4_ext_mark_uninitialized(ex);



			err = ext4_ext_remove_space(inode, map->m_lblk,

				map->m_lblk + punched_out);

			ext4_ext_invalidate_cache(inode);



			err = ext4_ext_rm_leaf(handle, inode, path,

				map->m_lblk, map->m_lblk + punched_out);



			if (!err && path->p_hdr->eh_entries == 0) {

				/*

				 * Punch hole freed all of this sub tree,

				 * so we need to correct eh_depth

				 */

				err = ext4_ext_get_access(handle, inode, path);

				if (err == 0) {

					ext_inode_hdr(inode)->eh_depth = 0;

					ext_inode_hdr(inode)->eh_max =

					cpu_to_le16(ext4_ext_space_root(

						inode, 0));



					err = ext4_ext_dirty(

						handle, inode, path);

				}

			}



			goto out2;

		}
@@ -3596,17 +3584,18 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, 
	}



	err = check_eofblocks_fl(handle, inode, map->m_lblk, path, ar.len);

	if (err)

		goto out2;



	err = ext4_ext_insert_extent(handle, inode, path, &newex, flags);

	if (!err)

		err = ext4_ext_insert_extent(handle, inode, path,

					     &newex, flags);

	if (err) {

		int fb_flags = flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE ?

			EXT4_FREE_BLOCKS_NO_QUOT_UPDATE : 0;

		/* free data blocks we just allocated */

		/* not a good idea to call discard here directly,

		 * but otherwise we'd need to call it every free() */

		ext4_discard_preallocations(inode);

		ext4_free_blocks(handle, inode, NULL, ext4_ext_pblock(&newex),

				 ext4_ext_get_actual_len(&newex), 0);

				 ext4_ext_get_actual_len(&newex), fb_flags);

		goto out2;

	}
@@ -3699,7 +3688,7 @@ void ext4_ext_truncate(struct inode *inode) 


	last_block = (inode->i_size + sb->s_blocksize - 1)

			>> EXT4_BLOCK_SIZE_BITS(sb);

	err = ext4_ext_remove_space(inode, last_block, EXT_MAX_BLOCKS - 1);

	err = ext4_ext_remove_space(inode, last_block);



	/* In a multi-transaction truncate, we only make the final

	 * transaction synchronous.
@@ -3835,7 +3824,7 @@ retry: 
						blkbits) >> blkbits))

			new_size = offset + len;

		else

			new_size = (map.m_lblk + ret) << blkbits;

			new_size = ((loff_t) map.m_lblk + ret) << blkbits;



		ext4_falloc_update_inode(inode, mode, new_size,

					 (map.m_flags & EXT4_MAP_NEW));