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

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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: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-By: Tom Talpey <tom@talpey.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Steve French 2021-02-23 16:16:09 -06:00
parent 4c9f948142
commit ddaf6d4a92
1 changed files with 17 additions and 6 deletions
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23
fs/cifs/inode.c
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@ -2198,12 +2198,23 @@ cifs_inode_needs_reval(struct inode *inode)
if (!lookupCacheEnabled)
return true;
if (!cifs_sb->ctx->actimeo)
return true;
if (!time_in_range(jiffies, cifs_i->time,
cifs_i->time + cifs_sb->ctx->actimeo))
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) &&