f2fs: fix the potential mismatch between dir's i_size and i_blocks

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This is the erroneous scenario.

                             i_size    on-disk i_size    i_blocks
__f2fs_add_link()             4096           4096           2
 get_new_data_page            8192           4096           3
 -ENOSPC = init_inode_metadata
 checkpoint                     -            4096           3
 POR and reboot

__f2fs_add_link()             4096           4096           3
 page = get_new_data_page (page->index = 1 by NEW_ADDR)
 add a dentry to the page successfully

f2fs_rmdir()
 f2fs_empty_dir()             4096           4096           3
 f2fs_unlink() goes, since there is no valid dentry due to i_size = 4096.
 But, still there is one dentry in page->index = 1.

So this patch moves the code to write dir->i_size into on-disk i_size in order
to sync dir's i_size, on-disk i_size, and its i_blocks.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

...

This commit is contained in:

Jaegeuk Kim 2014-02-03 17:24:51 +09:00

parent 1b1f559fc3

commit 924a2ddbd0

1 changed files with 4 additions and 4 deletions

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fs/f2fs/dir.c

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