Commit ddaf6d4a authored by Steve French's avatar Steve French
Browse files

cifs: convert revalidate of directories to using directory metadata cache timeout 



The new optional mount parm, "acdirmax" allows caching the metadata
for a directory longer than file metadata, which can be very helpful
for performance.  Convert cifs_inode_needs_reval to check acdirmax
for revalidating directory metadata.

Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
Reviewed-by: default avatarRonnie Sahlberg <lsahlber@redhat.com>
Reviewed-By: default avatarTom Talpey <tom@talpey.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 4c9f9481

fs/cifs/inode.c

+17 −6
Original line number Diff line number Diff line
@@ -2198,12 +2198,23 @@ cifs_inode_needs_reval(struct inode *inode) 
	if (!lookupCacheEnabled)

		return true;



	/*

	 * depending on inode type, check if attribute caching disabled for

	 * files or directories

	 */

	if (S_ISDIR(inode->i_mode)) {

		if (!cifs_sb->ctx->acdirmax)

			return true;

		if (!time_in_range(jiffies, cifs_i->time,

				   cifs_i->time + cifs_sb->ctx->acdirmax))

			return true;

	} else { /* file */

		if (!cifs_sb->ctx->actimeo)

			return true;



		if (!time_in_range(jiffies, cifs_i->time,

				   cifs_i->time + cifs_sb->ctx->actimeo))

			return true;

	}



	/* hardlinked files w/ noserverino get "special" treatment */

	if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) &&