diff options
Diffstat (limited to 'fs')
-rw-r--r-- | fs/ecryptfs/mmap.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c index 7def4be83e61..b731b09499cb 100644 --- a/fs/ecryptfs/mmap.c +++ b/fs/ecryptfs/mmap.c | |||
@@ -446,6 +446,7 @@ static int ecryptfs_write_inode_size_to_header(struct file *lower_file, | |||
446 | const struct address_space_operations *lower_a_ops; | 446 | const struct address_space_operations *lower_a_ops; |
447 | u64 file_size; | 447 | u64 file_size; |
448 | 448 | ||
449 | retry: | ||
449 | header_page = grab_cache_page(lower_inode->i_mapping, 0); | 450 | header_page = grab_cache_page(lower_inode->i_mapping, 0); |
450 | if (!header_page) { | 451 | if (!header_page) { |
451 | ecryptfs_printk(KERN_ERR, "grab_cache_page for " | 452 | ecryptfs_printk(KERN_ERR, "grab_cache_page for " |
@@ -456,9 +457,10 @@ static int ecryptfs_write_inode_size_to_header(struct file *lower_file, | |||
456 | lower_a_ops = lower_inode->i_mapping->a_ops; | 457 | lower_a_ops = lower_inode->i_mapping->a_ops; |
457 | rc = lower_a_ops->prepare_write(lower_file, header_page, 0, 8); | 458 | rc = lower_a_ops->prepare_write(lower_file, header_page, 0, 8); |
458 | if (rc) { | 459 | if (rc) { |
459 | if (rc == AOP_TRUNCATED_PAGE) | 460 | if (rc == AOP_TRUNCATED_PAGE) { |
460 | ecryptfs_release_lower_page(header_page, 0); | 461 | ecryptfs_release_lower_page(header_page, 0); |
461 | else | 462 | goto retry; |
463 | } else | ||
462 | ecryptfs_release_lower_page(header_page, 1); | 464 | ecryptfs_release_lower_page(header_page, 1); |
463 | goto out; | 465 | goto out; |
464 | } | 466 | } |
@@ -473,9 +475,10 @@ static int ecryptfs_write_inode_size_to_header(struct file *lower_file, | |||
473 | if (rc < 0) | 475 | if (rc < 0) |
474 | ecryptfs_printk(KERN_ERR, "Error commiting header page " | 476 | ecryptfs_printk(KERN_ERR, "Error commiting header page " |
475 | "write\n"); | 477 | "write\n"); |
476 | if (rc == AOP_TRUNCATED_PAGE) | 478 | if (rc == AOP_TRUNCATED_PAGE) { |
477 | ecryptfs_release_lower_page(header_page, 0); | 479 | ecryptfs_release_lower_page(header_page, 0); |
478 | else | 480 | goto retry; |
481 | } else | ||
479 | ecryptfs_release_lower_page(header_page, 1); | 482 | ecryptfs_release_lower_page(header_page, 1); |
480 | lower_inode->i_mtime = lower_inode->i_ctime = CURRENT_TIME; | 483 | lower_inode->i_mtime = lower_inode->i_ctime = CURRENT_TIME; |
481 | mark_inode_dirty_sync(inode); | 484 | mark_inode_dirty_sync(inode); |
@@ -565,6 +568,7 @@ int ecryptfs_get_lower_page(struct page **lower_page, struct inode *lower_inode, | |||
565 | { | 568 | { |
566 | int rc = 0; | 569 | int rc = 0; |
567 | 570 | ||
571 | retry: | ||
568 | *lower_page = grab_cache_page(lower_inode->i_mapping, lower_page_index); | 572 | *lower_page = grab_cache_page(lower_inode->i_mapping, lower_page_index); |
569 | if (!(*lower_page)) { | 573 | if (!(*lower_page)) { |
570 | rc = -EINVAL; | 574 | rc = -EINVAL; |
@@ -578,18 +582,18 @@ int ecryptfs_get_lower_page(struct page **lower_page, struct inode *lower_inode, | |||
578 | byte_offset, | 582 | byte_offset, |
579 | region_bytes); | 583 | region_bytes); |
580 | if (rc) { | 584 | if (rc) { |
581 | ecryptfs_printk(KERN_ERR, "prepare_write for " | 585 | if (rc == AOP_TRUNCATED_PAGE) { |
586 | ecryptfs_release_lower_page(*lower_page, 0); | ||
587 | goto retry; | ||
588 | } else { | ||
589 | ecryptfs_printk(KERN_ERR, "prepare_write for " | ||
582 | "lower_page_index = [0x%.16x] failed; rc = " | 590 | "lower_page_index = [0x%.16x] failed; rc = " |
583 | "[%d]\n", lower_page_index, rc); | 591 | "[%d]\n", lower_page_index, rc); |
584 | } | ||
585 | out: | ||
586 | if (rc && (*lower_page)) { | ||
587 | if (rc == AOP_TRUNCATED_PAGE) | ||
588 | ecryptfs_release_lower_page(*lower_page, 0); | ||
589 | else | ||
590 | ecryptfs_release_lower_page(*lower_page, 1); | 592 | ecryptfs_release_lower_page(*lower_page, 1); |
591 | (*lower_page) = NULL; | 593 | (*lower_page) = NULL; |
594 | } | ||
592 | } | 595 | } |
596 | out: | ||
593 | return rc; | 597 | return rc; |
594 | } | 598 | } |
595 | 599 | ||