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f2fs: fix to truncate blocks past EOF in ->setattr 

By using FALLOC_FL_KEEP_SIZE in ->fallocate of f2fs, we can fallocate block past
EOF without changing i_size of inode. These blocks past EOF will not be
truncated in ->setattr as we truncate them only when change the file size.

We should give a chance to truncate blocks out of filesize in setattr().

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2014-09-15 18:02:09 +08:00 committed by Jaegeuk Kim
parent 976e4c50ae
commit 09db6a2ef8
1 changed files with 12 additions and 5 deletions
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17
fs/f2fs/file.c
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@ -560,15 +560,22 @@ int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
if (err)
return err;
if ((attr->ia_valid & ATTR_SIZE) &&
attr->ia_size != i_size_read(inode)) {
if (attr->ia_valid & ATTR_SIZE) {
err = f2fs_convert_inline_data(inode, attr->ia_size, NULL);
if (err)
return err;
truncate_setsize(inode, attr->ia_size);
f2fs_truncate(inode);
f2fs_balance_fs(F2FS_I_SB(inode));
if (attr->ia_size != i_size_read(inode)) {
truncate_setsize(inode, attr->ia_size);
f2fs_truncate(inode);
f2fs_balance_fs(F2FS_I_SB(inode));
} else {
/*
* giving a chance to truncate blocks past EOF which
* are fallocated with FALLOC_FL_KEEP_SIZE.
*/
f2fs_truncate(inode);
}
}
__setattr_copy(inode, attr);