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authorTheodore Ts'o <tytso@mit.edu>2016-03-26 23:14:34 +0300
committerTheodore Ts'o <tytso@mit.edu>2016-03-26 23:14:34 +0300
commitc9af28fdd44922a6c10c9f8315718408af98e315 (patch)
treeb5bc491b5d141ba710bc6da44b00125b8d5d589c /fs/ext4/readpage.c
parent9e92f48c34eb2b9af9d12f892e2fe1fce5e8ce35 (diff)
downloadlinux-c9af28fdd44922a6c10c9f8315718408af98e315.tar.xz
ext4 crypto: don't let data integrity writebacks fail with ENOMEM
We don't want the writeback triggered from the journal commit (in data=writeback mode) to cause the journal to abort due to generic_writepages() returning an ENOMEM error. In addition, if fsync() fails with ENOMEM, most applications will probably not do the right thing. So if we are doing a data integrity sync, and ext4_encrypt() returns ENOMEM, we will submit any queued I/O to date, and then retry the allocation using GFP_NOFAIL. Google-Bug-Id: 27641567 Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/readpage.c')
-rw-r--r--fs/ext4/readpage.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c
index 5dc5e95063de..bc7642f57dc8 100644
--- a/fs/ext4/readpage.c
+++ b/fs/ext4/readpage.c
@@ -279,7 +279,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
if (ext4_encrypted_inode(inode) &&
S_ISREG(inode->i_mode)) {
- ctx = ext4_get_crypto_ctx(inode);
+ ctx = ext4_get_crypto_ctx(inode, GFP_NOFS);
if (IS_ERR(ctx))
goto set_error_page;
}