This is a note to let you know that I've just added the patch titled
ksmbd: retrieve number of blocks using vfs_getattr in set_file_allocation_info
to the 6.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ksmbd-retrieve-number-of-blocks-using-vfs_getattr-in.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 368fcc47d5485d997a349b06769b7fb995da216f
Author: Marios Makassikis <mmakassikis@xxxxxxxxxx>
Date: Thu Feb 22 10:58:21 2024 +0100
ksmbd: retrieve number of blocks using vfs_getattr in set_file_allocation_info
[ Upstream commit 34cd86b6632718b7df3999d96f51e63de41c5e4f ]
Use vfs_getattr() to retrieve stat information, rather than make
assumptions about how a filesystem fills inode structs.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Marios Makassikis <mmakassikis@xxxxxxxxxx>
Acked-by: Namjae Jeon <linkinjeon@xxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c
index f6cc5d2730ffb..199c31c275e5b 100644
--- a/fs/smb/server/smb2pdu.c
+++ b/fs/smb/server/smb2pdu.c
@@ -5809,15 +5809,21 @@ static int set_file_allocation_info(struct ksmbd_work *work,
loff_t alloc_blks;
struct inode *inode;
+ struct kstat stat;
int rc;
if (!(fp->daccess & FILE_WRITE_DATA_LE))
return -EACCES;
+ rc = vfs_getattr(&fp->filp->f_path, &stat, STATX_BASIC_STATS,
+ AT_STATX_SYNC_AS_STAT);
+ if (rc)
+ return rc;
+
alloc_blks = (le64_to_cpu(file_alloc_info->AllocationSize) + 511) >> 9;
inode = file_inode(fp->filp);
- if (alloc_blks > inode->i_blocks) {
+ if (alloc_blks > stat.blocks) {
smb_break_all_levII_oplock(work, fp, 1);
rc = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
alloc_blks * 512);
@@ -5825,7 +5831,7 @@ static int set_file_allocation_info(struct ksmbd_work *work,
pr_err("vfs_fallocate is failed : %d\n", rc);
return rc;
}
- } else if (alloc_blks < inode->i_blocks) {
+ } else if (alloc_blks < stat.blocks) {
loff_t size;
/*
