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smb: enable reuse of deferred file handles for write operations

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Previously, deferred file handles were reused only for read
operations, this commit extends to reusing deferred handles
for write operations. By reusing these handles we can reduce
the need for open/close operations over the wire.

Signed-off-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Bharath SM 2024-12-13 22:50:21 +05:30 • committed by Steve French
parent 4bbf9020be
commit b8ea3b1ff5
1 changed files with 5 additions and 1 deletions
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6
fs/smb/client/file.c
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@ -990,7 +990,11 @@ int cifs_open(struct inode *inode, struct file *file)
}
/* Get the cached handle as SMB2 close is deferred */
rc = cifs_get_readable_path(tcon, full_path, &cfile);
if (OPEN_FMODE(file->f_flags) & FMODE_WRITE) {
rc = cifs_get_writable_path(tcon, full_path, FIND_WR_FSUID_ONLY, &cfile);
} else {
rc = cifs_get_readable_path(tcon, full_path, &cfile);
}
if (rc == 0) {
if (file->f_flags == cfile->f_flags) {
file->private_data = cfile;