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-rw-r--r--fs/ext4/inode.c75
1 files changed, 53 insertions, 22 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index ef9d5be..9f7f9e4 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -39,7 +39,9 @@
#include <linux/bio.h>
#include <linux/workqueue.h>
#include <linux/kernel.h>
+#include <linux/printk.h>
#include <linux/slab.h>
+#include <linux/ratelimit.h>
#include "ext4_jbd2.h"
#include "xattr.h"
@@ -54,10 +56,17 @@ static inline int ext4_begin_ordered_truncate(struct inode *inode,
loff_t new_size)
{
trace_ext4_begin_ordered_truncate(inode, new_size);
- return jbd2_journal_begin_ordered_truncate(
- EXT4_SB(inode->i_sb)->s_journal,
- &EXT4_I(inode)->jinode,
- new_size);
+ /*
+ * If jinode is zero, then we never opened the file for
+ * writing, so there's no need to call
+ * jbd2_journal_begin_ordered_truncate() since there's no
+ * outstanding writes we need to flush.
+ */
+ if (!EXT4_I(inode)->jinode)
+ return 0;
+ return jbd2_journal_begin_ordered_truncate(EXT4_JOURNAL(inode),
+ EXT4_I(inode)->jinode,
+ new_size);
}
static void ext4_invalidatepage(struct page *page, unsigned long offset);
@@ -552,7 +561,7 @@ static ext4_fsblk_t ext4_find_goal(struct inode *inode, ext4_lblk_t block,
}
/**
- * ext4_blks_to_allocate: Look up the block map and count the number
+ * ext4_blks_to_allocate - Look up the block map and count the number
* of direct blocks need to be allocated for the given branch.
*
* @branch: chain of indirect blocks
@@ -591,13 +600,19 @@ static int ext4_blks_to_allocate(Indirect *branch, int k, unsigned int blks,
/**
* ext4_alloc_blocks: multiple allocate blocks needed for a branch
+ * @handle: handle for this transaction
+ * @inode: inode which needs allocated blocks
+ * @iblock: the logical block to start allocated at
+ * @goal: preferred physical block of allocation
* @indirect_blks: the number of blocks need to allocate for indirect
* blocks
- *
+ * @blks: number of desired blocks
* @new_blocks: on return it will store the new block numbers for
* the indirect blocks(if needed) and the first direct block,
- * @blks: on return it will store the total number of allocated
- * direct blocks
+ * @err: on return it will store the error code
+ *
+ * This function will return the number of blocks allocated as
+ * requested by the passed-in parameters.
*/
static int ext4_alloc_blocks(handle_t *handle, struct inode *inode,
ext4_lblk_t iblock, ext4_fsblk_t goal,
@@ -711,9 +726,11 @@ failed_out:
/**
* ext4_alloc_branch - allocate and set up a chain of blocks.
+ * @handle: handle for this transaction
* @inode: owner
* @indirect_blks: number of allocated indirect blocks
* @blks: number of allocated direct blocks
+ * @goal: preferred place for allocation
* @offsets: offsets (in the blocks) to store the pointers to next.
* @branch: place to store the chain in.
*
@@ -826,6 +843,7 @@ failed:
/**
* ext4_splice_branch - splice the allocated branch onto inode.
+ * @handle: handle for this transaction
* @inode: owner
* @block: (logical) number of block we are adding
* @chain: chain of indirect blocks (with a missing link - see
@@ -1081,7 +1099,7 @@ static int ext4_indirect_calc_metadata_amount(struct inode *inode,
* Calculate the number of metadata blocks need to reserve
* to allocate a block located at @lblock
*/
-static int ext4_calc_metadata_amount(struct inode *inode, sector_t lblock)
+static int ext4_calc_metadata_amount(struct inode *inode, ext4_lblk_t lblock)
{
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
return ext4_ext_calc_metadata_amount(inode, lblock);
@@ -1320,7 +1338,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
* avoid double accounting
*/
if (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE)
- EXT4_I(inode)->i_delalloc_reserved_flag = 1;
+ ext4_set_inode_state(inode, EXT4_STATE_DELALLOC_RESERVED);
/*
* We need to check for EXT4 here because migrate
* could have changed the inode type in between
@@ -1350,7 +1368,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
ext4_da_update_reserve_space(inode, retval, 1);
}
if (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE)
- EXT4_I(inode)->i_delalloc_reserved_flag = 0;
+ ext4_clear_inode_state(inode, EXT4_STATE_DELALLOC_RESERVED);
up_write((&EXT4_I(inode)->i_data_sem));
if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) {
@@ -1878,7 +1896,7 @@ static int ext4_journalled_write_end(struct file *file,
/*
* Reserve a single block located at lblock
*/
-static int ext4_da_reserve_space(struct inode *inode, sector_t lblock)
+static int ext4_da_reserve_space(struct inode *inode, ext4_lblk_t lblock)
{
int retries = 0;
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
@@ -2239,7 +2257,7 @@ static void mpage_da_map_and_submit(struct mpage_da_data *mpd)
* affects functions in many different parts of the allocation
* call path. This flag exists primarily because we don't
* want to change *many* call functions, so ext4_map_blocks()
- * will set the magic i_delalloc_reserved_flag once the
+ * will set the EXT4_STATE_DELALLOC_RESERVED flag once the
* inode's allocation semaphore is taken.
*
* If the blocks in questions were delalloc blocks, set
@@ -3720,8 +3738,7 @@ static int ext4_set_bh_endio(struct buffer_head *bh, struct inode *inode)
retry:
io_end = ext4_init_io_end(inode, GFP_ATOMIC);
if (!io_end) {
- if (printk_ratelimit())
- printk(KERN_WARNING "%s: allocation fail\n", __func__);
+ pr_warn_ratelimited("%s: allocation fail\n", __func__);
schedule();
goto retry;
}
@@ -4045,7 +4062,7 @@ int ext4_block_truncate_page(handle_t *handle,
if (ext4_should_journal_data(inode)) {
err = ext4_handle_dirty_metadata(handle, inode, bh);
} else {
- if (ext4_should_order_data(inode))
+ if (ext4_should_order_data(inode) && EXT4_I(inode)->jinode)
err = ext4_jbd2_file_inode(handle, inode);
mark_buffer_dirty(bh);
}
@@ -4169,6 +4186,7 @@ static int ext4_clear_blocks(handle_t *handle, struct inode *inode,
{
__le32 *p;
int flags = EXT4_FREE_BLOCKS_FORGET | EXT4_FREE_BLOCKS_VALIDATED;
+ int err;
if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))
flags |= EXT4_FREE_BLOCKS_METADATA;
@@ -4184,11 +4202,23 @@ static int ext4_clear_blocks(handle_t *handle, struct inode *inode,
if (try_to_extend_transaction(handle, inode)) {
if (bh) {
BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
- ext4_handle_dirty_metadata(handle, inode, bh);
+ err = ext4_handle_dirty_metadata(handle, inode, bh);
+ if (unlikely(err)) {
+ ext4_std_error(inode->i_sb, err);
+ return 1;
+ }
+ }
+ err = ext4_mark_inode_dirty(handle, inode);
+ if (unlikely(err)) {
+ ext4_std_error(inode->i_sb, err);
+ return 1;
+ }
+ err = ext4_truncate_restart_trans(handle, inode,
+ blocks_for_truncate(inode));
+ if (unlikely(err)) {
+ ext4_std_error(inode->i_sb, err);
+ return 1;
}
- ext4_mark_inode_dirty(handle, inode);
- ext4_truncate_restart_trans(handle, inode,
- blocks_for_truncate(inode));
if (bh) {
BUFFER_TRACE(bh, "retaking write access");
ext4_journal_get_write_access(handle, bh);
@@ -4349,6 +4379,7 @@ static void ext4_free_branches(handle_t *handle, struct inode *inode,
(__le32 *) bh->b_data,
(__le32 *) bh->b_data + addr_per_block,
depth);
+ brelse(bh);
/*
* Everything below this this pointer has been
@@ -4859,7 +4890,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
}
inode->i_nlink = le16_to_cpu(raw_inode->i_links_count);
- ei->i_state_flags = 0;
+ ext4_clear_state_flags(ei); /* Only relevant on 32-bit archs */
ei->i_dir_start_lookup = 0;
ei->i_dtime = le32_to_cpu(raw_inode->i_dtime);
/* We now have enough fields to check if the inode was active or not.
@@ -5118,7 +5149,7 @@ static int ext4_do_update_inode(handle_t *handle,
if (ext4_inode_blocks_set(handle, raw_inode, ei))
goto out_brelse;
raw_inode->i_dtime = cpu_to_le32(ei->i_dtime);
- raw_inode->i_flags = cpu_to_le32(ei->i_flags);
+ raw_inode->i_flags = cpu_to_le32(ei->i_flags & 0xFFFFFFFF);
if (EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
cpu_to_le32(EXT4_OS_HURD))
raw_inode->i_file_acl_high =
generated by cgit v1.1 at 2024-05-25 20:19:58 +0000