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authorYe Bin <yebin10@huawei.com>2022-12-08 10:32:31 +0800
committerTheodore Ts'o <tytso@mit.edu>2022-12-09 00:56:47 -0500
commitcc12a6f25e07ed05d5825a1664b67a970842b2ca (patch)
tree95a17d3ed53cde384351e6db47565de442d1e631 /fs/ext4
parent8994d11395f8165b3deca1971946f549f0822630 (diff)
ext4: allocate extended attribute value in vmalloc area
Now, extended attribute value maximum length is 64K. The memory requested here does not need continuous physical addresses, so it is appropriate to use kvmalloc to request memory. At the same time, it can also cope with the situation that the extended attribute will become longer in the future. Signed-off-by: Ye Bin <yebin10@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20221208023233.1231330-3-yebin@huaweicloud.com Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@kernel.org
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/xattr.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 6bdd502527f8..b666d3bf8b38 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -2548,7 +2548,7 @@ static int ext4_xattr_move_to_block(handle_t *handle, struct inode *inode,
is = kzalloc(sizeof(struct ext4_xattr_ibody_find), GFP_NOFS);
bs = kzalloc(sizeof(struct ext4_xattr_block_find), GFP_NOFS);
- buffer = kmalloc(value_size, GFP_NOFS);
+ buffer = kvmalloc(value_size, GFP_NOFS);
b_entry_name = kmalloc(entry->e_name_len + 1, GFP_NOFS);
if (!is || !bs || !buffer || !b_entry_name) {
error = -ENOMEM;
@@ -2600,7 +2600,7 @@ static int ext4_xattr_move_to_block(handle_t *handle, struct inode *inode,
error = 0;
out:
kfree(b_entry_name);
- kfree(buffer);
+ kvfree(buffer);
if (is)
brelse(is->iloc.bh);
if (bs)