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-rw-r--r--fs/btrfs/ctree.h2
-rw-r--r--fs/btrfs/file.c5
-rw-r--r--fs/btrfs/inode.c80
3 files changed, 40 insertions, 47 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 2c98d209e6ac..34142d5647df 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2537,7 +2537,7 @@ void btrfs_orphan_post_snapshot(struct btrfs_trans_handle *trans,
struct btrfs_pending_snapshot *pending);
void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
-int btrfs_cont_expand(struct inode *inode, loff_t size);
+int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size);
int btrfs_invalidate_inodes(struct btrfs_root *root);
void btrfs_add_delayed_iput(struct inode *inode);
void btrfs_run_delayed_iputs(struct btrfs_root *root);
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 24a19c2743ca..3786eca2a905 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -817,7 +817,7 @@ static noinline int prepare_pages(struct btrfs_root *root, struct file *file,
last_pos = ((u64)index + num_pages) << PAGE_CACHE_SHIFT;
if (start_pos > inode->i_size) {
- err = btrfs_cont_expand(inode, start_pos);
+ err = btrfs_cont_expand(inode, i_size_read(inode), start_pos);
if (err)
return err;
}
@@ -1330,7 +1330,8 @@ static long btrfs_fallocate(struct file *file, int mode,
goto out;
if (alloc_start > inode->i_size) {
- ret = btrfs_cont_expand(inode, alloc_start);
+ ret = btrfs_cont_expand(inode, i_size_read(inode),
+ alloc_start);
if (ret)
goto out;
}
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 2d2e079713d7..3662ffec17d9 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -84,7 +84,8 @@ static unsigned char btrfs_type_by_mode[S_IFMT >> S_SHIFT] = {
[S_IFLNK >> S_SHIFT] = BTRFS_FT_SYMLINK,
};
-static void btrfs_truncate(struct inode *inode);
+static int btrfs_setsize(struct inode *inode, loff_t newsize);
+static int btrfs_truncate(struct inode *inode);
static int btrfs_finish_ordered_io(struct inode *inode, u64 start, u64 end);
static noinline int cow_file_range(struct inode *inode,
struct page *locked_page,
@@ -2371,6 +2372,11 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
/* if we have links, this was a truncate, lets do that */
if (inode->i_nlink) {
+ if (!S_ISREG(inode->i_mode)) {
+ WARN_ON(1);
+ iput(inode);
+ continue;
+ }
nr_truncate++;
btrfs_truncate(inode);
} else {
@@ -3538,7 +3544,7 @@ out:
return ret;
}
-int btrfs_cont_expand(struct inode *inode, loff_t size)
+int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size)
{
struct btrfs_trans_handle *trans;
struct btrfs_root *root = BTRFS_I(inode)->root;
@@ -3546,7 +3552,7 @@ int btrfs_cont_expand(struct inode *inode, loff_t size)
struct extent_map *em = NULL;
struct extent_state *cached_state = NULL;
u64 mask = root->sectorsize - 1;
- u64 hole_start = (inode->i_size + mask) & ~mask;
+ u64 hole_start = (oldsize + mask) & ~mask;
u64 block_end = (size + mask) & ~mask;
u64 last_byte;
u64 cur_offset;
@@ -3617,27 +3623,17 @@ int btrfs_cont_expand(struct inode *inode, loff_t size)
return err;
}
-static int btrfs_setattr_size(struct inode *inode, struct iattr *attr)
+static int btrfs_setsize(struct inode *inode, loff_t newsize)
{
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_trans_handle *trans;
+ loff_t oldsize = i_size_read(inode);
unsigned long nr;
int ret;
- if (attr->ia_size == inode->i_size)
+ if (newsize == oldsize)
return 0;
- if (attr->ia_size > inode->i_size) {
- unsigned long limit;
- limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
- if (attr->ia_size > inode->i_sb->s_maxbytes)
- return -EFBIG;
- if (limit != RLIM_INFINITY && attr->ia_size > limit) {
- send_sig(SIGXFSZ, current, 0);
- return -EFBIG;
- }
- }
-
trans = btrfs_start_transaction(root, 5);
if (IS_ERR(trans))
return PTR_ERR(trans);
@@ -3651,16 +3647,16 @@ static int btrfs_setattr_size(struct inode *inode, struct iattr *attr)
btrfs_end_transaction(trans, root);
btrfs_btree_balance_dirty(root, nr);
- if (attr->ia_size > inode->i_size) {
- ret = btrfs_cont_expand(inode, attr->ia_size);
+ if (newsize > oldsize) {
+ i_size_write(inode, newsize);
+ btrfs_ordered_update_i_size(inode, i_size_read(inode), NULL);
+ truncate_pagecache(inode, oldsize, newsize);
+ ret = btrfs_cont_expand(inode, oldsize, newsize);
if (ret) {
- btrfs_truncate(inode);
+ btrfs_setsize(inode, oldsize);
return ret;
}
- i_size_write(inode, attr->ia_size);
- btrfs_ordered_update_i_size(inode, inode->i_size, NULL);
-
trans = btrfs_start_transaction(root, 0);
BUG_ON(IS_ERR(trans));
btrfs_set_trans_block_group(trans, inode);
@@ -3676,22 +3672,22 @@ static int btrfs_setattr_size(struct inode *inode, struct iattr *attr)
nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
btrfs_btree_balance_dirty(root, nr);
- return 0;
- }
+ } else {
- /*
- * We're truncating a file that used to have good data down to
- * zero. Make sure it gets into the ordered flush list so that
- * any new writes get down to disk quickly.
- */
- if (attr->ia_size == 0)
- BTRFS_I(inode)->ordered_data_close = 1;
+ /*
+ * We're truncating a file that used to have good data down to
+ * zero. Make sure it gets into the ordered flush list so that
+ * any new writes get down to disk quickly.
+ */
+ if (newsize == 0)
+ BTRFS_I(inode)->ordered_data_close = 1;
- /* we don't support swapfiles, so vmtruncate shouldn't fail */
- ret = vmtruncate(inode, attr->ia_size);
- BUG_ON(ret);
+ /* we don't support swapfiles, so vmtruncate shouldn't fail */
+ truncate_setsize(inode, newsize);
+ ret = btrfs_truncate(inode);
+ }
- return 0;
+ return ret;
}
static int btrfs_setattr(struct dentry *dentry, struct iattr *attr)
@@ -3708,7 +3704,7 @@ static int btrfs_setattr(struct dentry *dentry, struct iattr *attr)
return err;
if (S_ISREG(inode->i_mode) && (attr->ia_valid & ATTR_SIZE)) {
- err = btrfs_setattr_size(inode, attr);
+ err = btrfs_setsize(inode, attr->ia_size);
if (err)
return err;
}
@@ -6478,7 +6474,7 @@ out:
return ret;
}
-static void btrfs_truncate(struct inode *inode)
+static int btrfs_truncate(struct inode *inode)
{
struct btrfs_root *root = BTRFS_I(inode)->root;
int ret;
@@ -6486,14 +6482,9 @@ static void btrfs_truncate(struct inode *inode)
unsigned long nr;
u64 mask = root->sectorsize - 1;
- if (!S_ISREG(inode->i_mode)) {
- WARN_ON(1);
- return;
- }
-
ret = btrfs_truncate_page(inode->i_mapping, inode->i_size);
if (ret)
- return;
+ return ret;
btrfs_wait_ordered_range(inode, inode->i_size & (~mask), (u64)-1);
btrfs_ordered_update_i_size(inode, inode->i_size, NULL);
@@ -6568,6 +6559,8 @@ static void btrfs_truncate(struct inode *inode)
ret = btrfs_end_transaction_throttle(trans, root);
BUG_ON(ret);
btrfs_btree_balance_dirty(root, nr);
+
+ return ret;
}
/*
@@ -7367,7 +7360,6 @@ static const struct address_space_operations btrfs_symlink_aops = {
};
static const struct inode_operations btrfs_file_inode_operations = {
- .truncate = btrfs_truncate,
.getattr = btrfs_getattr,
.setattr = btrfs_setattr,
.setxattr = btrfs_setxattr,
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-27 18:38:55 +0300