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f2fs: don't allow atomic writes for not regular files

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The atomic writes only supports regular files for database.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2017-03-17 10:04:15 +08:00
parent 8c242db9b8
commit e811898c97
1 changed files with 3 additions and 0 deletions
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fs/f2fs/file.c
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@@ -1518,6 +1518,9 @@ static int f2fs_ioc_start_atomic_write(struct file *filp)
if (!inode_owner_or_capable(inode)) if (!inode_owner_or_capable(inode))
return -EACCES; return -EACCES;
if (!S_ISREG(inode->i_mode))
return -EINVAL;
ret = mnt_want_write_file(filp); ret = mnt_want_write_file(filp);
if (ret) if (ret)
return ret; return ret;