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ext4: drop ext4_kvmalloc() 

As Jan pointed out[1], as of commit 81378da64d ("jbd2: mark the
transaction context with the scope GFP_NOFS context") we use
memalloc_nofs_{save,restore}() while a jbd2 handle is active.  So
ext4_kvmalloc() so we can call allocate using GFP_NOFS is no longer
necessary.

[1] https://lore.kernel.org/r/20200109100007.GC27035@quack2.suse.cz

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Link: https://lore.kernel.org/r/20200116155031.266620-1-tytso@mit.edu
Reviewed-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Theodore Ts'o 2020-01-16 10:08:16 -05:00
parent a54d8d34d2
commit 71b565ceff
4 changed files with 5 additions and 18 deletions
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1
fs/ext4/ext4.h
View File

@ -2740,7 +2740,6 @@ extern struct buffer_head *ext4_sb_bread(struct super_block *sb,
extern int ext4_seq_options_show(struct seq_file *seq, void *offset);
extern int ext4_calculate_overhead(struct super_block *sb);
extern void ext4_superblock_csum_set(struct super_block *sb);
extern void *ext4_kvmalloc(size_t size, gfp_t flags);
extern int ext4_alloc_flex_bg_array(struct super_block *sb,
ext4_group_t ngroup);
extern const char *ext4_decode_error(struct super_block *sb, int errno,

10
fs/ext4/resize.c
View File

@ -824,9 +824,8 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
if (unlikely(err))
goto errout;
n_group_desc = ext4_kvmalloc((gdb_num + 1) *
sizeof(struct buffer_head *),
GFP_NOFS);
n_group_desc = kvmalloc((gdb_num + 1) * sizeof(struct buffer_head *),
GFP_KERNEL);
if (!n_group_desc) {
err = -ENOMEM;
ext4_warning(sb, "not enough memory for %lu groups",
@ -900,9 +899,8 @@ static int add_new_gdb_meta_bg(struct super_block *sb,
gdb_bh = ext4_sb_bread(sb, gdblock, 0);
if (IS_ERR(gdb_bh))
return PTR_ERR(gdb_bh);
n_group_desc = ext4_kvmalloc((gdb_num + 1) *
sizeof(struct buffer_head *),
GFP_NOFS);
n_group_desc = kvmalloc((gdb_num + 1) * sizeof(struct buffer_head *),
GFP_KERNEL);
if (!n_group_desc) {
brelse(gdb_bh);
err = -ENOMEM;

10
fs/ext4/super.c
View File

@ -204,16 +204,6 @@ void ext4_superblock_csum_set(struct super_block *sb)
es->s_checksum = ext4_superblock_csum(sb, es);
}
void *ext4_kvmalloc(size_t size, gfp_t flags)
{
void *ret;
ret = kmalloc(size, flags | __GFP_NOWARN);
if (!ret)
ret = __vmalloc(size, flags, PAGE_KERNEL);
return ret;
}
ext4_fsblk_t ext4_block_bitmap(struct super_block *sb,
struct ext4_group_desc *bg)
{

2
fs/ext4/xattr.c
View File

@ -1456,7 +1456,7 @@ ext4_xattr_inode_cache_find(struct inode *inode, const void *value,
if (!ce)
return NULL;
ea_data = ext4_kvmalloc(value_len, GFP_NOFS);
ea_data = kvmalloc(value_len, GFP_KERNEL);
if (!ea_data) {
mb_cache_entry_put(ea_inode_cache, ce);
return NULL;