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Message-Id: <20230424054926.26927-4-hch@lst.de>
Date: Mon, 24 Apr 2023 07:49:12 +0200
From: Christoph Hellwig <hch@....de>
To: Jens Axboe <axboe@...nel.dk>
Cc: Miklos Szeredi <miklos@...redi.hu>,
"Darrick J. Wong" <djwong@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
David Howells <dhowells@...hat.com>,
Matthew Wilcox <willy@...radead.org>,
linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
ceph-devel@...r.kernel.org, linux-ext4@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net, cluster-devel@...hat.com,
linux-xfs@...r.kernel.org, linux-nfs@...r.kernel.org,
linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH 03/17] fs: rename and move block_page_mkwrite_return
block_page_mkwrite_return is neither block nor mkwrite specific, and
should not be under CONFIG_BLOCK. Move it to mm.h and rename it to
errno_to_vmfault.
Signed-off-by: Christoph Hellwig <hch@....de>
---
fs/ext4/inode.c | 2 +-
fs/f2fs/file.c | 2 +-
fs/gfs2/file.c | 16 ++++++++--------
fs/iomap/buffered-io.c | 2 +-
fs/nilfs2/file.c | 2 +-
fs/udf/file.c | 2 +-
include/linux/buffer_head.h | 12 ------------
include/linux/mm.h | 13 +++++++++++++
8 files changed, 26 insertions(+), 25 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index bf0b7dea4900af..c0f41a38bd9ca4 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -6343,7 +6343,7 @@ vm_fault_t ext4_page_mkwrite(struct vm_fault *vmf)
if (err == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
goto retry_alloc;
out_ret:
- ret = block_page_mkwrite_return(err);
+ ret = errno_to_vmfault(err);
out:
filemap_invalidate_unlock_shared(mapping);
sb_end_pagefault(inode->i_sb);
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 15dabeac469050..f4ab23efcf85f8 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -161,7 +161,7 @@ static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
sb_end_pagefault(inode->i_sb);
err:
- return block_page_mkwrite_return(err);
+ return errno_to_vmfault(err);
}
static const struct vm_operations_struct f2fs_file_vm_ops = {
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 300844f50dcd28..8c4fad359ff538 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -432,7 +432,7 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf)
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
err = gfs2_glock_nq(&gh);
if (err) {
- ret = block_page_mkwrite_return(err);
+ ret = errno_to_vmfault(err);
goto out_uninit;
}
@@ -474,7 +474,7 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf)
err = gfs2_rindex_update(sdp);
if (err) {
- ret = block_page_mkwrite_return(err);
+ ret = errno_to_vmfault(err);
goto out_unlock;
}
@@ -482,12 +482,12 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf)
ap.target = data_blocks + ind_blocks;
err = gfs2_quota_lock_check(ip, &ap);
if (err) {
- ret = block_page_mkwrite_return(err);
+ ret = errno_to_vmfault(err);
goto out_unlock;
}
err = gfs2_inplace_reserve(ip, &ap);
if (err) {
- ret = block_page_mkwrite_return(err);
+ ret = errno_to_vmfault(err);
goto out_quota_unlock;
}
@@ -500,7 +500,7 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf)
}
err = gfs2_trans_begin(sdp, rblocks, 0);
if (err) {
- ret = block_page_mkwrite_return(err);
+ ret = errno_to_vmfault(err);
goto out_trans_fail;
}
@@ -508,7 +508,7 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf)
if (gfs2_is_stuffed(ip)) {
err = gfs2_unstuff_dinode(ip);
if (err) {
- ret = block_page_mkwrite_return(err);
+ ret = errno_to_vmfault(err);
goto out_trans_end;
}
}
@@ -524,7 +524,7 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf)
err = gfs2_allocate_page_backing(page, length);
if (err)
- ret = block_page_mkwrite_return(err);
+ ret = errno_to_vmfault(err);
out_page_locked:
if (ret != VM_FAULT_LOCKED)
@@ -558,7 +558,7 @@ static vm_fault_t gfs2_fault(struct vm_fault *vmf)
gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &gh);
err = gfs2_glock_nq(&gh);
if (err) {
- ret = block_page_mkwrite_return(err);
+ ret = errno_to_vmfault(err);
goto out_uninit;
}
ret = filemap_fault(vmf);
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 6f4c97a6d7e9dc..2986be63d2bea6 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -1290,7 +1290,7 @@ vm_fault_t iomap_page_mkwrite(struct vm_fault *vmf, const struct iomap_ops *ops)
return VM_FAULT_LOCKED;
out_unlock:
folio_unlock(folio);
- return block_page_mkwrite_return(ret);
+ return errno_to_vmfault(ret);
}
EXPORT_SYMBOL_GPL(iomap_page_mkwrite);
diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c
index a265d391ffe92d..ea35294bb158a3 100644
--- a/fs/nilfs2/file.c
+++ b/fs/nilfs2/file.c
@@ -108,7 +108,7 @@ static vm_fault_t nilfs_page_mkwrite(struct vm_fault *vmf)
wait_for_stable_page(page);
out:
sb_end_pagefault(inode->i_sb);
- return block_page_mkwrite_return(ret);
+ return errno_to_vmfault(ret);
}
static const struct vm_operations_struct nilfs_file_vm_ops = {
diff --git a/fs/udf/file.c b/fs/udf/file.c
index 8238f742377bab..9420284d7c0455 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -71,7 +71,7 @@ static vm_fault_t udf_page_mkwrite(struct vm_fault *vmf)
err = block_commit_write(page, 0, end);
if (err < 0) {
unlock_page(page);
- ret = block_page_mkwrite_return(err);
+ ret = errno_to_vmfault(err);
goto out_unlock;
}
out_dirty:
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 8f14dca5fed756..0fcc16b7f02bb4 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -281,18 +281,6 @@ int generic_cont_expand_simple(struct inode *inode, loff_t size);
int block_commit_write(struct page *page, unsigned from, unsigned to);
int block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
get_block_t get_block);
-/* Convert errno to return value from ->page_mkwrite() call */
-static inline vm_fault_t block_page_mkwrite_return(int err)
-{
- if (err == 0)
- return VM_FAULT_LOCKED;
- if (err == -EFAULT || err == -EAGAIN)
- return VM_FAULT_NOPAGE;
- if (err == -ENOMEM)
- return VM_FAULT_OOM;
- /* -ENOSPC, -EDQUOT, -EIO ... */
- return VM_FAULT_SIGBUS;
-}
sector_t generic_block_bmap(struct address_space *, sector_t, get_block_t *);
int block_truncate_page(struct address_space *, loff_t, get_block_t *);
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 1f79667824eb60..03e645032c81ac 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3061,6 +3061,19 @@ extern vm_fault_t filemap_map_pages(struct vm_fault *vmf,
pgoff_t start_pgoff, pgoff_t end_pgoff);
extern vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf);
+/* Convert errno to return value from ->page_mkwrite() call */
+static inline vm_fault_t errno_to_vmfault(int err)
+{
+ if (err == 0)
+ return VM_FAULT_LOCKED;
+ if (err == -EFAULT || err == -EAGAIN)
+ return VM_FAULT_NOPAGE;
+ if (err == -ENOMEM)
+ return VM_FAULT_OOM;
+ /* -ENOSPC, -EDQUOT, -EIO ... */
+ return VM_FAULT_SIGBUS;
+}
+
extern unsigned long stack_guard_gap;
/* Generic expand stack which grows the stack according to GROWS{UP,DOWN} */
extern int expand_stack(struct vm_area_struct *vma, unsigned long address);
--
2.39.2
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