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ext4: add shutdown bit and check for it

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Add a shutdown bit that will cause ext4 processing to fail immediately
with EIO.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o
2017-02-05 01:28:48 -05:00
parent 9549a168bd
commit 0db1ff222d
11 changed files with 103 additions and 3 deletions
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3
fs/ext4/ialloc.c
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@@ -764,6 +764,9 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
if (!dir || !dir->i_nlink)
return ERR_PTR(-EPERM);
if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb))))
return ERR_PTR(-EIO);
if ((ext4_encrypted_inode(dir) ||
DUMMY_ENCRYPTION_ENABLED(EXT4_SB(dir->i_sb))) &&
(S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))) {