Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=800d15a53e7d14fa26495b7b95d3bfe7877dd69d
Commit: 800d15a53e7d14fa26495b7b95d3bfe7877dd69d
Parent: 674b892ede247ef4fb8d00918f02e29c32b9bbaf
Author: Nick Piggin <[EMAIL PROTECTED]>
AuthorDate: Tue Oct 16 01:25:03 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Tue Oct 16 09:42:55 2007 -0700
implement simple fs aops
Implement new aops for some of the simpler filesystems.
Signed-off-by: Nick Piggin <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
fs/configfs/inode.c | 4 ++--
fs/hugetlbfs/inode.c | 16 ++++++++++------
fs/ramfs/file-mmu.c | 4 ++--
fs/ramfs/file-nommu.c | 4 ++--
fs/sysfs/inode.c | 4 ++--
mm/shmem.c | 34 +++++++++++++++++++++++++++-------
6 files changed, 45 insertions(+), 21 deletions(-)
diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c
index ddc003a..dbd257d 100644
--- a/fs/configfs/inode.c
+++ b/fs/configfs/inode.c
@@ -41,8 +41,8 @@ extern struct super_block * configfs_sb;
static const struct address_space_operations configfs_aops = {
.readpage = simple_readpage,
- .prepare_write = simple_prepare_write,
- .commit_write = simple_commit_write
+ .write_begin = simple_write_begin,
+ .write_end = simple_write_end,
};
static struct backing_dev_info configfs_backing_dev_info = {
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 950c2fb..70fbb29 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -189,15 +189,19 @@ static int hugetlbfs_readpage(struct file *file, struct
page * page)
return -EINVAL;
}
-static int hugetlbfs_prepare_write(struct file *file,
- struct page *page, unsigned offset, unsigned to)
+static int hugetlbfs_write_begin(struct file *file,
+ struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata)
{
return -EINVAL;
}
-static int hugetlbfs_commit_write(struct file *file,
- struct page *page, unsigned offset, unsigned to)
+static int hugetlbfs_write_end(struct file *file, struct address_space
*mapping,
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *page, void *fsdata)
{
+ BUG();
return -EINVAL;
}
@@ -569,8 +573,8 @@ static void hugetlbfs_destroy_inode(struct inode *inode)
static const struct address_space_operations hugetlbfs_aops = {
.readpage = hugetlbfs_readpage,
- .prepare_write = hugetlbfs_prepare_write,
- .commit_write = hugetlbfs_commit_write,
+ .write_begin = hugetlbfs_write_begin,
+ .write_end = hugetlbfs_write_end,
.set_page_dirty = hugetlbfs_set_page_dirty,
};
diff --git a/fs/ramfs/file-mmu.c b/fs/ramfs/file-mmu.c
index 97bdc0b..b41a514 100644
--- a/fs/ramfs/file-mmu.c
+++ b/fs/ramfs/file-mmu.c
@@ -29,8 +29,8 @@
const struct address_space_operations ramfs_aops = {
.readpage = simple_readpage,
- .prepare_write = simple_prepare_write,
- .commit_write = simple_commit_write,
+ .write_begin = simple_write_begin,
+ .write_end = simple_write_end,
.set_page_dirty = __set_page_dirty_no_writeback,
};
diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
index 237fe8b..0989bc2 100644
--- a/fs/ramfs/file-nommu.c
+++ b/fs/ramfs/file-nommu.c
@@ -29,8 +29,8 @@ static int ramfs_nommu_setattr(struct dentry *, struct iattr
*);
const struct address_space_operations ramfs_aops = {
.readpage = simple_readpage,
- .prepare_write = simple_prepare_write,
- .commit_write = simple_commit_write,
+ .write_begin = simple_write_begin,
+ .write_end = simple_write_end,
.set_page_dirty = __set_page_dirty_no_writeback,
};
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 9236635..c4ef945 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -24,8 +24,8 @@ extern struct super_block * sysfs_sb;
static const struct address_space_operations sysfs_aops = {
.readpage = simple_readpage,
- .prepare_write = simple_prepare_write,
- .commit_write = simple_commit_write
+ .write_begin = simple_write_begin,
+ .write_end = simple_write_end,
};
static struct backing_dev_info sysfs_backing_dev_info = {
diff --git a/mm/shmem.c b/mm/shmem.c
index 2c39925..131f293 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1108,7 +1108,7 @@ static int shmem_getpage(struct inode *inode, unsigned
long idx,
* Normally, filepage is NULL on entry, and either found
* uptodate immediately, or allocated and zeroed, or read
* in under swappage, which is then assigned to filepage.
- * But shmem_readpage and shmem_prepare_write pass in a locked
+ * But shmem_readpage and shmem_write_begin pass in a locked
* filepage, which may be found not uptodate by other callers
* too, and may need to be copied from the swappage read in.
*/
@@ -1445,7 +1445,7 @@ static const struct inode_operations
shmem_symlink_inode_operations;
static const struct inode_operations shmem_symlink_inline_operations;
/*
- * Normally tmpfs avoids the use of shmem_readpage and shmem_prepare_write;
+ * Normally tmpfs avoids the use of shmem_readpage and shmem_write_begin;
* but providing them allows a tmpfs file to be used for splice, sendfile, and
* below the loop driver, in the generic fashion that many filesystems support.
*/
@@ -1458,10 +1458,30 @@ static int shmem_readpage(struct file *file, struct
page *page)
}
static int
-shmem_prepare_write(struct file *file, struct page *page, unsigned offset,
unsigned to)
+shmem_write_begin(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata)
{
- struct inode *inode = page->mapping->host;
- return shmem_getpage(inode, page->index, &page, SGP_WRITE, NULL);
+ struct inode *inode = mapping->host;
+ pgoff_t index = pos >> PAGE_CACHE_SHIFT;
+ *pagep = NULL;
+ return shmem_getpage(inode, index, pagep, SGP_WRITE, NULL);
+}
+
+static int
+shmem_write_end(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *page, void *fsdata)
+{
+ struct inode *inode = mapping->host;
+
+ set_page_dirty(page);
+ page_cache_release(page);
+
+ if (pos+copied > inode->i_size)
+ i_size_write(inode, pos+copied);
+
+ return copied;
}
static ssize_t
@@ -2337,8 +2357,8 @@ static const struct address_space_operations shmem_aops =
{
.set_page_dirty = __set_page_dirty_no_writeback,
#ifdef CONFIG_TMPFS
.readpage = shmem_readpage,
- .prepare_write = shmem_prepare_write,
- .commit_write = simple_commit_write,
+ .write_begin = shmem_write_begin,
+ .write_end = shmem_write_end,
#endif
.migratepage = migrate_page,
};
-
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