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Diffstat (limited to 'fs/ext4/move_extent.c')
-rw-r--r--fs/ext4/move_extent.c84
1 files changed, 24 insertions, 60 deletions
diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
index 7fa4d855dbd..2484c7ec6a7 100644
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -57,8 +57,8 @@ get_ext_path(struct inode *inode, ext4_lblk_t lblock,
static void
copy_extent_status(struct ext4_extent *src, struct ext4_extent *dest)
{
- if (ext4_ext_is_uninitialized(src))
- ext4_ext_mark_uninitialized(dest);
+ if (ext4_ext_is_unwritten(src))
+ ext4_ext_mark_unwritten(dest);
else
dest->ee_len = cpu_to_le16(ext4_ext_get_actual_len(dest));
}
@@ -76,7 +76,7 @@ copy_extent_status(struct ext4_extent *src, struct ext4_extent *dest)
* ext4_ext_path structure refers to the last extent, or a negative error
* value on failure.
*/
-static int
+int
mext_next_extent(struct inode *inode, struct ext4_ext_path *path,
struct ext4_extent **extent)
{
@@ -391,6 +391,7 @@ mext_insert_extents(handle_t *handle, struct inode *orig_inode,
if (depth) {
/* Register to journal */
+ BUFFER_TRACE(orig_path->p_bh, "get_write_access");
ret = ext4_journal_get_write_access(handle, orig_path->p_bh);
if (ret)
return ret;
@@ -593,14 +594,14 @@ mext_calc_swap_extents(struct ext4_extent *tmp_dext,
* @inode: inode in question
* @from: block offset of inode
* @count: block count to be checked
- * @uninit: extents expected to be uninitialized
+ * @unwritten: extents expected to be unwritten
* @err: pointer to save error value
*
* Return 1 if all extents in range has expected type, and zero otherwise.
*/
static int
mext_check_coverage(struct inode *inode, ext4_lblk_t from, ext4_lblk_t count,
- int uninit, int *err)
+ int unwritten, int *err)
{
struct ext4_ext_path *path = NULL;
struct ext4_extent *ext;
@@ -611,7 +612,7 @@ mext_check_coverage(struct inode *inode, ext4_lblk_t from, ext4_lblk_t count,
if (*err)
goto out;
ext = path[ext_depth(inode)].p_ext;
- if (uninit != ext4_ext_is_uninitialized(ext))
+ if (unwritten != ext4_ext_is_unwritten(ext))
goto out;
from += ext4_ext_get_actual_len(ext);
ext4_ext_drop_refs(path);
@@ -861,8 +862,7 @@ mext_page_mkuptodate(struct page *page, unsigned from, unsigned to)
}
if (!buffer_mapped(bh)) {
zero_user(page, block_start, blocksize);
- if (!err)
- set_buffer_uptodate(bh);
+ set_buffer_uptodate(bh);
continue;
}
}
@@ -895,7 +895,7 @@ out:
* @orig_page_offset: page index on original file
* @data_offset_in_page: block index where data swapping starts
* @block_len_in_page: the number of blocks to be swapped
- * @uninit: orig extent is uninitialized or not
+ * @unwritten: orig extent is unwritten or not
* @err: pointer to save return value
*
* Save the data in original inode blocks and replace original inode extents
@@ -906,7 +906,7 @@ out:
static int
move_extent_per_page(struct file *o_filp, struct inode *donor_inode,
pgoff_t orig_page_offset, int data_offset_in_page,
- int block_len_in_page, int uninit, int *err)
+ int block_len_in_page, int unwritten, int *err)
{
struct inode *orig_inode = file_inode(o_filp);
struct page *pagep[2] = {NULL, NULL};
@@ -963,27 +963,27 @@ again:
if (unlikely(*err < 0))
goto stop_journal;
/*
- * If orig extent was uninitialized it can become initialized
+ * If orig extent was unwritten it can become initialized
* at any time after i_data_sem was dropped, in order to
* serialize with delalloc we have recheck extent while we
* hold page's lock, if it is still the case data copy is not
* necessary, just swap data blocks between orig and donor.
*/
- if (uninit) {
+ if (unwritten) {
ext4_double_down_write_data_sem(orig_inode, donor_inode);
/* If any of extents in range became initialized we have to
* fallback to data copying */
- uninit = mext_check_coverage(orig_inode, orig_blk_offset,
- block_len_in_page, 1, err);
+ unwritten = mext_check_coverage(orig_inode, orig_blk_offset,
+ block_len_in_page, 1, err);
if (*err)
goto drop_data_sem;
- uninit &= mext_check_coverage(donor_inode, orig_blk_offset,
- block_len_in_page, 1, err);
+ unwritten &= mext_check_coverage(donor_inode, orig_blk_offset,
+ block_len_in_page, 1, err);
if (*err)
goto drop_data_sem;
- if (!uninit) {
+ if (!unwritten) {
ext4_double_up_write_data_sem(orig_inode, donor_inode);
goto data_copy;
}
@@ -1203,42 +1203,6 @@ mext_check_arguments(struct inode *orig_inode,
}
/**
- * ext4_inode_double_lock - Lock i_mutex on both @inode1 and @inode2
- *
- * @inode1: the inode structure
- * @inode2: the inode structure
- *
- * Lock two inodes' i_mutex
- */
-void
-ext4_inode_double_lock(struct inode *inode1, struct inode *inode2)
-{
- BUG_ON(inode1 == inode2);
- if (inode1 < inode2) {
- mutex_lock_nested(&inode1->i_mutex, I_MUTEX_PARENT);
- mutex_lock_nested(&inode2->i_mutex, I_MUTEX_CHILD);
- } else {
- mutex_lock_nested(&inode2->i_mutex, I_MUTEX_PARENT);
- mutex_lock_nested(&inode1->i_mutex, I_MUTEX_CHILD);
- }
-}
-
-/**
- * ext4_inode_double_unlock - Release i_mutex on both @inode1 and @inode2
- *
- * @inode1: the inode that is released first
- * @inode2: the inode that is released second
- *
- */
-
-void
-ext4_inode_double_unlock(struct inode *inode1, struct inode *inode2)
-{
- mutex_unlock(&inode1->i_mutex);
- mutex_unlock(&inode2->i_mutex);
-}
-
-/**
* ext4_move_extents - Exchange the specified range of a file
*
* @o_filp: file structure of the original file
@@ -1296,7 +1260,7 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp,
int blocks_per_page = PAGE_CACHE_SIZE >> orig_inode->i_blkbits;
int data_offset_in_page;
int block_len_in_page;
- int uninit;
+ int unwritten;
if (orig_inode->i_sb != donor_inode->i_sb) {
ext4_debug("ext4 move extent: The argument files "
@@ -1327,7 +1291,7 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp,
return -EINVAL;
}
/* Protect orig and donor inodes against a truncate */
- ext4_inode_double_lock(orig_inode, donor_inode);
+ lock_two_nondirectories(orig_inode, donor_inode);
/* Wait for all existing dio workers */
ext4_inode_block_unlocked_dio(orig_inode);
@@ -1428,8 +1392,8 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp,
!last_extent)
continue;
- /* Is original extent is uninitialized */
- uninit = ext4_ext_is_uninitialized(ext_prev);
+ /* Is original extent is unwritten */
+ unwritten = ext4_ext_is_unwritten(ext_prev);
data_offset_in_page = seq_start % blocks_per_page;
@@ -1469,8 +1433,8 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp,
o_filp, donor_inode,
orig_page_offset,
data_offset_in_page,
- block_len_in_page, uninit,
- &ret);
+ block_len_in_page,
+ unwritten, &ret);
/* Count how many blocks we have exchanged */
*moved_len += block_len_in_page;
@@ -1535,7 +1499,7 @@ out:
ext4_double_up_write_data_sem(orig_inode, donor_inode);
ext4_inode_resume_unlocked_dio(orig_inode);
ext4_inode_resume_unlocked_dio(donor_inode);
- ext4_inode_double_unlock(orig_inode, donor_inode);
+ unlock_two_nondirectories(orig_inode, donor_inode);
return ret;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-05 08:19:58 +0000