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ext4: add might_sleep() annotations 

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
This commit is contained in:
Theodore Ts'o 2013-04-03 22:00:52 -04:00
parent 19b5ef6157
commit b10a44c369
2 changed files with 10 additions and 0 deletions
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6
fs/ext4/ext4_jbd2.c
View File

@ -43,6 +43,8 @@ handle_t *__ext4_journal_start_sb(struct super_block *sb, unsigned int line,
{
journal_t *journal;
might_sleep();
trace_ext4_journal_start(sb, nblocks, _RET_IP_);
if (sb->s_flags & MS_RDONLY)
return ERR_PTR(-EROFS);
@ -113,6 +115,8 @@ int __ext4_journal_get_write_access(const char *where, unsigned int line,
{
int err = 0;
might_sleep();
if (ext4_handle_valid(handle)) {
err = jbd2_journal_get_write_access(handle, bh);
if (err)
@ -209,6 +213,8 @@ int __ext4_handle_dirty_metadata(const char *where, unsigned int line,
{
int err = 0;
might_sleep();
if (ext4_handle_valid(handle)) {
err = jbd2_journal_dirty_metadata(handle, bh);
if (err) {

4
fs/ext4/mballoc.c
View File

@ -1011,6 +1011,7 @@ int ext4_mb_init_group(struct super_block *sb, ext4_group_t group)
struct page *page;
int ret = 0;
might_sleep();
mb_debug(1, "init group %u\n", group);
this_grp = ext4_get_group_info(sb, group);
/*
@ -1082,6 +1083,7 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group,
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct inode *inode = sbi->s_buddy_cache;
might_sleep();
mb_debug(1, "load group %u\n", group);
blocks_per_page = PAGE_CACHE_SIZE / sb->s_blocksize;
@ -4217,6 +4219,7 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
unsigned int inquota = 0;
unsigned int reserv_clstrs = 0;
might_sleep();
sb = ar->inode->i_sb;
sbi = EXT4_SB(sb);
@ -4470,6 +4473,7 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode,
int err = 0;
int ret;
might_sleep();
if (bh) {
if (block)
BUG_ON(block != bh->b_blocknr);