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-rw-r--r--fs/ext2/Kconfig1
-rw-r--r--fs/ext2/acl.c5
-rw-r--r--fs/ext2/acl.h2
-rw-r--r--fs/ext2/ext2.h11
-rw-r--r--fs/ext2/file.c7
-rw-r--r--fs/ext2/inode.c27
-rw-r--r--fs/ext2/super.c3
7 files changed, 23 insertions, 33 deletions
diff --git a/fs/ext2/Kconfig b/fs/ext2/Kconfig
index 54eec9185627..1248ff4ef562 100644
--- a/fs/ext2/Kconfig
+++ b/fs/ext2/Kconfig
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config EXT2_FS
tristate "Second extended fs support"
+ select FS_IOMAP
help
Ext2 is a standard Linux file system for hard disks.
diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c
index b9a9db98e94b..bf298967c5b8 100644
--- a/fs/ext2/acl.c
+++ b/fs/ext2/acl.c
@@ -141,13 +141,16 @@ fail:
* inode->i_mutex: don't care
*/
struct posix_acl *
-ext2_get_acl(struct inode *inode, int type)
+ext2_get_acl(struct inode *inode, int type, bool rcu)
{
int name_index;
char *value = NULL;
struct posix_acl *acl;
int retval;
+ if (rcu)
+ return ERR_PTR(-ECHILD);
+
switch (type) {
case ACL_TYPE_ACCESS:
name_index = EXT2_XATTR_INDEX_POSIX_ACL_ACCESS;
diff --git a/fs/ext2/acl.h b/fs/ext2/acl.h
index 917db5f6630a..925ab6287d35 100644
--- a/fs/ext2/acl.h
+++ b/fs/ext2/acl.h
@@ -55,7 +55,7 @@ static inline int ext2_acl_count(size_t size)
#ifdef CONFIG_EXT2_FS_POSIX_ACL
/* acl.c */
-extern struct posix_acl *ext2_get_acl(struct inode *inode, int type);
+extern struct posix_acl *ext2_get_acl(struct inode *inode, int type, bool rcu);
extern int ext2_set_acl(struct user_namespace *mnt_userns, struct inode *inode,
struct posix_acl *acl, int type);
extern int ext2_init_acl (struct inode *, struct inode *);
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index e512630cb63e..3be9dd6412b7 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -667,9 +667,6 @@ struct ext2_inode_info {
struct rw_semaphore xattr_sem;
#endif
rwlock_t i_meta_lock;
-#ifdef CONFIG_FS_DAX
- struct rw_semaphore dax_sem;
-#endif
/*
* truncate_mutex is for serialising ext2_truncate() against
@@ -685,14 +682,6 @@ struct ext2_inode_info {
#endif
};
-#ifdef CONFIG_FS_DAX
-#define dax_sem_down_write(ext2_inode) down_write(&(ext2_inode)->dax_sem)
-#define dax_sem_up_write(ext2_inode) up_write(&(ext2_inode)->dax_sem)
-#else
-#define dax_sem_down_write(ext2_inode)
-#define dax_sem_up_write(ext2_inode)
-#endif
-
/*
* Inode dynamic state flags
*/
diff --git a/fs/ext2/file.c b/fs/ext2/file.c
index f98466acc672..eb97aa3d700e 100644
--- a/fs/ext2/file.c
+++ b/fs/ext2/file.c
@@ -81,7 +81,7 @@ out_unlock:
*
* mmap_lock (MM)
* sb_start_pagefault (vfs, freeze)
- * ext2_inode_info->dax_sem
+ * address_space->invalidate_lock
* address_space->i_mmap_rwsem or page_lock (mutually exclusive in DAX)
* ext2_inode_info->truncate_mutex
*
@@ -91,7 +91,6 @@ out_unlock:
static vm_fault_t ext2_dax_fault(struct vm_fault *vmf)
{
struct inode *inode = file_inode(vmf->vma->vm_file);
- struct ext2_inode_info *ei = EXT2_I(inode);
vm_fault_t ret;
bool write = (vmf->flags & FAULT_FLAG_WRITE) &&
(vmf->vma->vm_flags & VM_SHARED);
@@ -100,11 +99,11 @@ static vm_fault_t ext2_dax_fault(struct vm_fault *vmf)
sb_start_pagefault(inode->i_sb);
file_update_time(vmf->vma->vm_file);
}
- down_read(&ei->dax_sem);
+ filemap_invalidate_lock_shared(inode->i_mapping);
ret = dax_iomap_fault(vmf, PE_SIZE_PTE, NULL, NULL, &ext2_iomap_ops);
- up_read(&ei->dax_sem);
+ filemap_invalidate_unlock_shared(inode->i_mapping);
if (write)
sb_end_pagefault(inode->i_sb);
return ret;
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index dadb121beb22..333fa62661d5 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -799,7 +799,6 @@ int ext2_get_block(struct inode *inode, sector_t iblock,
}
-#ifdef CONFIG_FS_DAX
static int ext2_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
unsigned flags, struct iomap *iomap, struct iomap *srcmap)
{
@@ -852,16 +851,18 @@ const struct iomap_ops ext2_iomap_ops = {
.iomap_begin = ext2_iomap_begin,
.iomap_end = ext2_iomap_end,
};
-#else
-/* Define empty ops for !CONFIG_FS_DAX case to avoid ugly ifdefs */
-const struct iomap_ops ext2_iomap_ops;
-#endif /* CONFIG_FS_DAX */
int ext2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len)
{
- return generic_block_fiemap(inode, fieinfo, start, len,
- ext2_get_block);
+ int ret;
+
+ inode_lock(inode);
+ len = min_t(u64, len, i_size_read(inode));
+ ret = iomap_fiemap(inode, fieinfo, start, len, &ext2_iomap_ops);
+ inode_unlock(inode);
+
+ return ret;
}
static int ext2_writepage(struct page *page, struct writeback_control *wbc)
@@ -1177,7 +1178,7 @@ static void ext2_free_branches(struct inode *inode, __le32 *p, __le32 *q, int de
ext2_free_data(inode, p, q);
}
-/* dax_sem must be held when calling this function */
+/* mapping->invalidate_lock must be held when calling this function */
static void __ext2_truncate_blocks(struct inode *inode, loff_t offset)
{
__le32 *i_data = EXT2_I(inode)->i_data;
@@ -1194,7 +1195,7 @@ static void __ext2_truncate_blocks(struct inode *inode, loff_t offset)
iblock = (offset + blocksize-1) >> EXT2_BLOCK_SIZE_BITS(inode->i_sb);
#ifdef CONFIG_FS_DAX
- WARN_ON(!rwsem_is_locked(&ei->dax_sem));
+ WARN_ON(!rwsem_is_locked(&inode->i_mapping->invalidate_lock));
#endif
n = ext2_block_to_path(inode, iblock, offsets, NULL);
@@ -1276,9 +1277,9 @@ static void ext2_truncate_blocks(struct inode *inode, loff_t offset)
if (ext2_inode_is_fast_symlink(inode))
return;
- dax_sem_down_write(EXT2_I(inode));
+ filemap_invalidate_lock(inode->i_mapping);
__ext2_truncate_blocks(inode, offset);
- dax_sem_up_write(EXT2_I(inode));
+ filemap_invalidate_unlock(inode->i_mapping);
}
static int ext2_setsize(struct inode *inode, loff_t newsize)
@@ -1308,10 +1309,10 @@ static int ext2_setsize(struct inode *inode, loff_t newsize)
if (error)
return error;
- dax_sem_down_write(EXT2_I(inode));
+ filemap_invalidate_lock(inode->i_mapping);
truncate_setsize(inode, newsize);
__ext2_truncate_blocks(inode, newsize);
- dax_sem_up_write(EXT2_I(inode));
+ filemap_invalidate_unlock(inode->i_mapping);
inode->i_mtime = inode->i_ctime = current_time(inode);
if (inode_needs_sync(inode)) {
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 26e69e48d7e0..d8d580b609ba 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -206,9 +206,6 @@ static void init_once(void *foo)
init_rwsem(&ei->xattr_sem);
#endif
mutex_init(&ei->truncate_mutex);
-#ifdef CONFIG_FS_DAX
- init_rwsem(&ei->dax_sem);
-#endif
inode_init_once(&ei->vfs_inode);
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-06 15:25:15 +0300