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tmpfs: minor clarifications/fixes for nr_inodes #13198

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Merged
copybara-service merged 1 commit into from
May 18, 2026
+2 −4
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tmpfs: minor clarifications/fixes for nr_inodes #13198

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6 changes: 2 additions & 4 deletions pkg/sentry/fsimpl/tmpfs/tmpfs.go
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Original file line number Diff line number Diff line change
Expand Up @@ -104,6 +104,7 @@ type filesystem struct {
maxSizeInPages uint64

// maxInodes is the maximum permissible number of inodes for the tmpfs.
// If maxInodes == 0, there is no limit on the number of inodes.
// This field is immutable.
maxInodes uint64

Expand Down Expand Up @@ -204,7 +205,7 @@ func getDefaultSizeLimit(disable bool) uint64 {

func getDefaultInodeLimit(disable bool) uint64 {
if disable {
return math.MaxInt64
return 0
}

return totalHostMem / hostarch.PageSize / 2
Expand Down Expand Up @@ -388,21 +389,18 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt
case linux.S_IFREG:
inode, err := fs.newRegularFile(rootKUID, rootKGID, rootMode, nil /* parentDir */)
if err != nil {
ctx.Warningf("failed to create tmpfs root file: %v", err)
return nil, nil, err
}
root = fs.newDentry(inode)
case linux.S_IFLNK:
inode, err := fs.newSymlink(rootKUID, rootKGID, rootMode, tmpfsOpts.RootSymlinkTarget, nil /* parentDir */)
if err != nil {
ctx.Warningf("failed to create tmpfs root symlink: %v", err)
return nil, nil, err
}
root = fs.newDentry(inode)
case linux.S_IFDIR:
dirInode, err := fs.newDirectory(rootKUID, rootKGID, rootMode, nil /* parentDir */)
if err != nil {
ctx.Warningf("failed to create tmpfs root directory: %v", err)
return nil, nil, err
}
root = &dirInode.dentry
Expand Down
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