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wrappers for ->i_mutex access

Forráskód böngészése 
parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested},
inode_foo(inode) being mutex_foo(&inode->i_mutex).

Please, use those for access to ->i_mutex; over the coming cycle
->i_mutex will become rwsem, with ->lookup() done with it held
only shared.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2016-01-22 15:40:57 -05:00
szülő 57b8f112cf
commit 5955102c99
177 fájl változott, egészen pontosan 908 új sor hozzáadva és 883 régi sor törölve
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20
fs/quota/dquot.c
Fájl megtekintése

@@ -682,9 +682,9 @@ int dquot_quota_sync(struct super_block *sb, int type)
continue;
if (!sb_has_quota_active(sb, cnt))
continue;
mutex_lock(&dqopt->files[cnt]->i_mutex);
inode_lock(dqopt->files[cnt]);
truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
mutex_unlock(&dqopt->files[cnt]->i_mutex);
inode_unlock(dqopt->files[cnt]);
}
mutex_unlock(&dqopt->dqonoff_mutex);
@@ -2162,12 +2162,12 @@ int dquot_disable(struct super_block *sb, int type, unsigned int flags)
/* If quota was reenabled in the meantime, we have
* nothing to do */
if (!sb_has_quota_loaded(sb, cnt)) {
mutex_lock(&toputinode[cnt]->i_mutex);
inode_lock(toputinode[cnt]);
toputinode[cnt]->i_flags &= ~(S_IMMUTABLE |
S_NOATIME | S_NOQUOTA);
truncate_inode_pages(&toputinode[cnt]->i_data,
0);
mutex_unlock(&toputinode[cnt]->i_mutex);
inode_unlock(toputinode[cnt]);
mark_inode_dirty_sync(toputinode[cnt]);
}
mutex_unlock(&dqopt->dqonoff_mutex);
@@ -2258,11 +2258,11 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
/* We don't want quota and atime on quota files (deadlocks
* possible) Also nobody should write to the file - we use
* special IO operations which ignore the immutable bit. */
mutex_lock(&inode->i_mutex);
inode_lock(inode);
oldflags = inode->i_flags & (S_NOATIME | S_IMMUTABLE |
S_NOQUOTA);
inode->i_flags |= S_NOQUOTA | S_NOATIME | S_IMMUTABLE;
mutex_unlock(&inode->i_mutex);
inode_unlock(inode);
/*
* When S_NOQUOTA is set, remove dquot references as no more
* references can be added
@@ -2305,12 +2305,12 @@ out_file_init:
iput(inode);
out_lock:
if (oldflags != -1) {
mutex_lock(&inode->i_mutex);
inode_lock(inode);
/* Set the flags back (in the case of accidental quotaon()
* on a wrong file we don't want to mess up the flags) */
inode->i_flags &= ~(S_NOATIME | S_NOQUOTA | S_IMMUTABLE);
inode->i_flags |= oldflags;
mutex_unlock(&inode->i_mutex);
inode_unlock(inode);
}
mutex_unlock(&dqopt->dqonoff_mutex);
out_fmt:
@@ -2430,9 +2430,9 @@ int dquot_quota_on_mount(struct super_block *sb, char *qf_name,
struct dentry *dentry;
int error;
mutex_lock(&d_inode(sb->s_root)->i_mutex);
inode_lock(d_inode(sb->s_root));
dentry = lookup_one_len(qf_name, sb->s_root, strlen(qf_name));
mutex_unlock(&d_inode(sb->s_root)->i_mutex);
inode_unlock(d_inode(sb->s_root));
if (IS_ERR(dentry))
return PTR_ERR(dentry);